speedkar99Here's how the Variable Valve Timing System Works on a car's engine.
The four-stroke internal combustion engine consists of gasoline-rich air entering the cylinder in the intake stroke, compressed, then ignited to push the piston down to rotate the crankshaft in the power stroke. The piston then returns to the top pushing the exhaust gases out the valves, only for the cycle to be repeated over again.
Variable valve timing optimizes fuel economy, thermal efficiency and emissions. An oil activated cam-phaser actuator is controlled by the ECU through an oil control valve. Oil pressure is sent through the VVT gear to fill up cavities to advance or retard timing. A closed loop control system utilizing the cam and crank position sensors is formed to ensure optimal timing by the ECU for either more power, or less emissions.
In this video, the engine from an Infiniti G35 (VQ35DE) is taken apart to explain the components of the variable valve timing system, including the oil control valve, camshaft bearing caps, timing tensioner, engine head, valves, camshaft and pistons.
How Variable Valve Timing Worksspeedkar992019-10-01 | Here's how the Variable Valve Timing System Works on a car's engine.
The four-stroke internal combustion engine consists of gasoline-rich air entering the cylinder in the intake stroke, compressed, then ignited to push the piston down to rotate the crankshaft in the power stroke. The piston then returns to the top pushing the exhaust gases out the valves, only for the cycle to be repeated over again.
Variable valve timing optimizes fuel economy, thermal efficiency and emissions. An oil activated cam-phaser actuator is controlled by the ECU through an oil control valve. Oil pressure is sent through the VVT gear to fill up cavities to advance or retard timing. A closed loop control system utilizing the cam and crank position sensors is formed to ensure optimal timing by the ECU for either more power, or less emissions.
In this video, the engine from an Infiniti G35 (VQ35DE) is taken apart to explain the components of the variable valve timing system, including the oil control valve, camshaft bearing caps, timing tensioner, engine head, valves, camshaft and pistons.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99The Ford Mustang V6 Essex Engine is Simple yet Forgottenspeedkar992023-09-05 | No one wanted a V6 SN-95 Mustang. As time drew on, the engine known as the Essex V6 became notorious for being unreliable. The other vehicles they came in, including the Taurus, Windstar and F-150 were also undesirable. The engine was under powered thanks to its archaic design with only two valves per cylinder, proving to limit airflow. Moreover, it had a strong tendancy to blow headgaskets, causing engine oil to mix with coolant which is what happened to the engine in this video.
That simplicity however, is a remarkable flashback to little electronics governed how combustion engines worked, not even just 20 years ago. The only wires on this engine are for the crank position sensor for a tachometer, and the ignition coil wiring.
The Ford Essex features an iron block with aluminum heads and blown headgaskets. It uses an overhead valve design, with the camshaft located between the V-bank of the 90 degree V6 block. Due to its 90 degree bank, a small balance shaft is used to minimize vibrations.
Skip to section in the video: 0:00 Introduction 0:54 Teardown 10:59 Analysis 16:11 Conclusion
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99GMC Sierra Mechanical Review!speedkar992023-08-29 | ...Why Small Turbocharged Engines are a Failure: Nissan MR16DDT Teardownspeedkar992023-08-21 | In this video a Nissan MR16DDT engine is torn down to see what's inside and how it works.
The Nissan MR engine is 1.6L 4 cylinder turbocharged engine that was designed with economy in mind. The engine in this video was from a 2014 Nissan Juke with 160,000 km on it and had a severe oil burning issue.
Smaller turbocharged engines make use of technologies such as turbocharging, exhaust gas recirculation (EGR) and direct injection to make more power out of what would otherwise be a gutless engine. These are compliance engines meant to achieve fuel economy standards, however at the sacrifice of longevity.
The failure of this engine was impart due to a lack of maintenance but also the design of the engine that has little tolerance for carbon buildup, oil starvation and tarnishing. Direct injection means the intake valves don't get cleaned, combine that with turbochargers, EGR and PCV systems and dynamic cooling systems that allow oil to enter the intake and these engines will start to fail prematurely.
In this video I demonstrate the installation and review of the F7Z-Plus dash cam on my Lexus GS. It has a front and rear camera and built in GPS so location and speed data is also stored with the recording. It's powered by either a hardwire kit or a 12V adapter, and uses built in wifi to connect to your phone to review and download footage.How Jeep 4WD Worksspeedkar992023-07-31 | Here's what's inside a Jeep 4WD transfer case and how it works!
A 4WD system is a selectable system where the engine drives all four wheels. It has a low gear range mode for multiplying the engine's torque and a mechanism to lock the front and rear driveshaft speeds. This allows for a very capable vehicle off road since no slippage is mechanically possible between the wheels should they loose traction.
In this video, the transfer case is from a 2018 Jeep Wrangler JL. This transfer case is also capable of an "automatic" mode, or AWD, which uses an electric motor to control the amount of slippage that can occur between front and rear axles. This means the system can be used on dry pavement without binding. This is done with a clutch (bands and friction disks) of which a varying pressure can be applied, controlling the amount of power transferred from the rear wheels to the front (up-to a 50/50 torque split).
The low-gear range is selectable manually through a cable mechanism from inside the cabin. IT has three main modes, hi, low and neutral. In Hi mode, the planetary gearset inside is negated, and the output shaft going to the rear wheels is directly connected to the input shaft of the transfer case. In low mode, the input is attached to the planet carrier, and the output is the sun gear while the ring gear is stationary, providing that 1:2.7 torque multiplication needed for off road use. The neutral state can be used for flat towing.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Piston Ring-Land Failure on a BMW N54 Twin Turbo Engine #bmw #failspeedkar992023-07-24 | While tearing down this engine with low compression on cylinder 6, I found the piston too to be clean relative to the others, indicating coolant may be entering the combustion chamber causing it to be cleaned. Upon opening the engine, the side of the piston where the piston's rings were completely damaged. This could cause excessive blow by, but more importantly, low compression and a rough running engine.Whats Inside a Brand New GM Ecotec Enginespeedkar992023-07-17 | Here's a look inside the GM Ecotec 1.4L LV7 SGE engine and how it works!
This engine was out of a 2020 Chevrolet Spark with barely 2,000km on it and is practically brand new. It features dual overhead cams with variable valve timing, port injection, aluminum heads, block, upper oil pan and even a metal valve cover!
The engine's overall design is simplistic yet economic, with a simple timing chain running from crank to cams, a variable oil pump, and an exhaust driven vacuum pump. Amenities like variable induction intake manifold are omitted, as the design intent here was to maximize fuel economy at a very low cost.
Overall while the engine's design is simple, the lubrication system is quite complex, with oil flowing through the camshafts and then back around to the hydraulic lifters on the intake side. There's a lack of gaskets used when sealing, as cheaper RTV is established, making it difficult to remove and reseal. Most importantly, the combustion chambers consisted of a lot of carbon buildup for only having 2000 km on it, which was not expected, in addition to the cam caps and camshaft showing excessive wear. This could be due to the thinner oil used from the factory, a lack of break-in time and the combustion cycle being used.
Skip to section in the video: 0:00 Introduction 0:54 Teardown 11:30 Analysis 19:50 Conclusion
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99How to Install an Android Head-unit in Your Car - ATOTO S8 Ultra Plus Reviewspeedkar992023-07-07 | Here’s how to install an Android Tablet head unit in your car! Installing a new stereo in your car will increase connectivity and bring your older vehicle to modern standards by adding features such as Bluetooth audio, WiFi, 5G internet connectivity, navigation, gesture controls, birds eye view and Android Auto and Apple CarPlay.
The unit installed in this video is an Atoto S8 Ultra with a 10.1” screen that fits inside a double DIN format. The vehicle demonstrated is a 2011 Toyota Sienna. Furthermore, the Atoto rear backup camera with 360 degree panoramic image stitching, front DVR dash camera and OBD II reader are demonstrated.
Installation of the headunit is similar to other double DIN units, which involves partial disassembly of the dashboard. Once removed, you’ll need a double DIN installation bracket kit and a wiring harness to convert your vehicle’s specific wiring harness to work with most aftermarket units.
Additionally, you’ll need a steering wheel control unit and a vehicle specific harness if you want to retain OEM controls. Finally, you’ll need tools such as a soldering iron and heat shrink to make the harness and basic hand tools to remove and install the unit and run wires into the dash.
Overall the Atoto S8 Ultra Plus, while pricey, has a lot of cool features that make aftermarket units very competitive with today’s OEM offerings. Having an Android Tablet installed in your car means you can install all apps available in the Google Play store as if it were your own phone. Atoto specific features such as the 360 degree panoramic camera, front DVR camera and OBDII reader work well. Some areas to improve on include the bracket’s adjustibility for tilting it downward, Bluetooth connectivity quirks, and adding a rear dash cam functionality.
A continuously variable transmission uses a steel push belt to transfer power from an input variator to an output variator. The diameter of the belt's input and output shaft varies, which determines the drive ratio.The variators are hydraulic cylinders that have a cone shape to the pulley section that interface with the belt. When fluid is added, the belt is adjusted to ride on a larger diameter. Meanwhile, fluid is released from the opposing variator, allowing the belt to ride on a smaller diameter. Both variators must be adjusted together for belt tension to be retained.
A planetary gear set on the output variator allows a change in direction for reverse gear, as well as a two speed step to increase the range of the CVT. Similar to an automatic transmission, a valve body controls how much fluid is applied to the variators, planetary clutches and torque converter.
Typical failures with CVT's include overheating - which is likely due to too much load on the unit from driving uphills, overloading the vehicle, worn fluid or towing conditions.
Furthermore, if belt tension cannot be retained, the belt will slip and shudder. Finally, since the belt itself is fragile and made up of hundreds of pieces, any minor alignment or over application of torque can cause it to catastrophically disintegrate.
he CVT in this video is a Jatco CVT-7 unit from a 2020 Chevrolet Spark with only 2000km on it. The vehicle was in a collision and the engine and transmission were working units when removed!
The Audi V8 engine uses dual overhead camshafts with variable valve timing on the intake camshaft. Those camshafts are driven by a timing chain, located at the rear of the engine behind the transmission. Unfortunately failure prone timing components and the placement of this chain results in expensive failures since repairs are very labour intense.
The rest of the engine however is well built but has unique design elements, such as timing chain powered accessories and a 5 valve design. The oil pump, air conditioning compressor, power steering pump and water pump are driven by an extra accessory drive timing chain setup and shafts leading to the front of the engine to where they reside, as opposed to the alternator which is powered by a traditional belt from the harmonic balancer at the front of the engine.
There are two versions of the 4.2L engine - newer Audi's have timing setups at the front of the engine which weren't nearly as failure prone. The engine in this video (BBK) failed due to a cracked plastic timing chain guide causing timing to skip and errors to be alerted in the computer before complete catastrophic failure. It was out of a 2007 Audi S4 B7. Other failure modes include failed timing chain tensioners, camshaft phasers and stretched chains causing rattle upon cold starts.How a Hybrid A/C Compressor Worksspeedkar992023-05-22 | Here is a comparison between how hybrid car's air conditioning compressors work compared to traditional compressors.
A/C compressors use rotating energy in an orbital motion to move scroll wheels relative to each other. This motion compresses gaseous refrigerant, which is then sent to the condensor, drier and then evaporator to cool the interior. Typical internal combustion engines use the rotational energy of the engine through its accessory drive to rotate the scroll wheel.
A hybrid car's internal combustion engine isn't always operating, especially in low speed conditions. Thus, an electric motor, driven by the same power inverter that drives the hybrid system is employed to rotate the scroll wheels. The orbital motion of the wheels can be precisely controlled according to HVAC demand, eliminating the need for a cycling clutch or a variable type compressor. The compressor opened up in this video is from a 2004 Toyota Prius hybrid.
In this video, the compressor from a Chevrolet Spark and Jeep Wrangler for is torn apart as a comparison. The Chevy spark uses a scroll type internal compressor with an external clutch, while the Jeep Wrangler uses a variable type A/C compressor with seven pistons and an adjustable swash plate.
0:00 Hybrid Compressor 7:35 Scroll Type Compressor 10:20 Variable Type Compressor
The Mini Cooper uses a 1.6L Inline 4 cylinder engine. It is very strongly built, featuring an iron block, iron ladder frame crank journals integrated into the upper oil pan, aluminum head and a single overhead camshaft. The Tritec engine was co-developed with BMW and is a very simple design, with a single timing chain from crank to camshaft.
Unfortunately, these engines can be plagued with issues, most commonly being low compression. Low compression can be caused my burnt or cracked valves, a cracked piston or worn compression rings. The engine in this video was burning a lot of oil and had carbon build up. It was out of a 2005 Mini Cooper with 260,000km.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Audi 4.2L V8 engines timing chains are located at the back of the engine, and its so complex!speedkar992023-05-05 | ...Heres how a 4x4 Jeep Wrangler Transmission Worksspeedkar992023-04-24 | Here’s a full teardown on what’s inside a 4x4 Jeep 8 speed automatic transmission and how it works!
The Jeep 850RE is an 8 speed automatic transmission used in the 2018+ Jeep Wrangler JL amongst other models. It features 5 clutch packs activated by pistons and 4 planetary gearsets to achieve 8 forward and 1 reverse gear ratio. It is longitudinally mounted for rear wheel drive, with the 4X4 transfer case attached to the rear of the transmission and a traditional torque converter and fluid pump at the front. It also features an external cooler and traditional shifter linkages for the parking pawl.
Inside, the transmission pan does not include a drain port, but has a serviceable filter. The valve body has 9 valves, in addition to an accumulator to help pressurize fluid once engine start-stop is engaged. Traditional planetary gearsets are employed. The casing is one piece, with the bell housing non-removable. There is an abundance of snap rings that are difficult to disengage upon disassembly.
Similar to other automatic transmissions, the 8 speed uses a combination of the planetary gearsets to achieve its ratios by turning on and off its clutch packs. The clutch packs are typically the wear point on all transmissions, in addition to failing solenoid valves and clogged lines. The exclusion of a dipstick and drain port ever so reinforces the fact that Chrysler does not have confidence in this vehicle’s longevity, although Jeep Wrangler enthusiasts will typically upkeep.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Honda D-Series Engine: A Low Point for Hondaspeedkar992023-04-11 | Here's a full teardown inside the Honda D17 engine to see what's inside and how it works!
The Honda D17 engine uses a single overhead camshaft with VTEC variable valve timing. The cam is driven by a timing belt from the crankshaft, as is with the oil pump. The bottom end of the engine uses a girdle to support lower main bearings that has oil passages within to lubricate its bearings. The cylinder head features a roller rocker arm setup with the extra rockers for VTEC engagement. An EGR valve and cooler assembly attaches to the back of the head.
The D17 engine suffered from headgasket failures, and typically wasn't as strong or receptive to tuning as the B- series that preceded it. Other common issues include oil leaks and EGR passages building up carbon. This was definitely an economy minded engine, as was the cost-cutting measures deployed in the 7th Generation Honda Civic upon which its found in.
The engine in this video was a D17A2 from a 2002 Acura EL with 192,000 km.
Skip to section in the video: 0:00 Introduction 1:04 Teardown 11:45 Analysis 17:48 Conclusion
In this video we teardown a 3.6L V6 Engine from a 2018 Jeep Wrangler that apparently failed to start. This engine features dual overhead cams with variable valve timing and aluminum construction. It also features exhaust gas recirculation (EGR) for emissions control.
The engine's overall construction consists of alot of plastic components (intake manifold, plenum, idler pulleys, valve covers, vacuum lines, etc). Inside, the camshaft wore down grooves due to the rocker arm sliding up against it. This is a common issue with this engine and can be due to lack of lubrication (this engine had sludge buildup due to lack of maintenance), thin oils, the rollers and hydraulic lifters failing, or material and heat treatment defects. Worn camshafts will cause poor performance or low compression because the valves cannot fully seat properly anymore, in addition to a loud tapping noise from the valve clearance being incorrect.
Skip to section in this video: 0:00 Introduction 1:07 Teardown 12:30 Analysis 21:02 Conclusion
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Lexus Spark Plugs, Differential fluid and Coolant Replacement | ASMR |speedkar992023-03-13 | Here's how to replace the Differential fluid, Coolant and Spark Plugs on a Lexus GS350 and IS250 and IS350.
This is an ASMR style video where you can watch and listen to me work!
Differential fluid is accessed with a fill and drain port on the passenger side of the unit. Using 10 mm hex, the fill port is first opened and then the drain port to remove fluid. Once the magnets are cleaned, the drain plug is reinstalled. A fluid pump is used to pump 2L of 75W90 gear oil into the fill port of the differential until it starts dripping out. Tighten the plugs and clean excess oil.
The coolant can be changed by draining and filling the radiator and overflow reservoir. The reservoir should be unbolted and washed out to remove settled debris. The radiator petcock valve is located on the bottom and can be reached from inside the engine bay, in front of the engine, opposite the crankshaft pulley. There's already a hole in the plastic cover below so there's no need to go underneath the vehicle. Use a Toyota pink compatible fluid that is borate and silicate free. Draining the engine block and heater core is optional for full coolant replacement. Bleed the cooling system with the radiator cap off and warm up the engine to allow air to burp out the top.
Replacing spark plugs is much easier on this RWD longitudinally mounted 2GR engine, compared to its FWD counterparts, since the intake does not need to be removed. The wiring harness needs to be freed and then the ignition coils carefully removed. On the passenger side the intake tube is removed to access coils and plugs. The spark plug torque is 16 ft-lb with no anti-seize on the threads. Use Denso Iridium spark plugs since it is OEM and best for this engine. This is also a good time to change the air filter and clean the throttle body. Throttle response has definitely improved after this service.
Skip to section in this video: 0:00 Introduction 0:27 Differential Fluid 1:48 Coolant 3:24 Spark plugs
Here's where you can find the fluids and tools used in this video:
The G13 is a 1.3L engine with all aluminum construction. Its light weight and simplicity is what lends to the Suzuki Swift and Geo Metro's fuel economy and reliability. The engine uses a single overhead camshaft with a rocker arm system. Each cylinder only has one valve for intake and one for exhaust.
The bottom end is built solid enough for the very few horsepower that this engine produced, with two bolt main bearings and a simple oil lubrication system.
In this video we take a look under the hood and underneath some of the latest cars at the autoshow to see what technical trends new cars are bringing. The main theme is electric and hybrid cars. While some may say EV’s are simpler, under the hood they are in fact quite complex and sometimes even tighter to work on from a maintenance perspective. Many of the EV’s share similar components to daily internal combustion cars, such as suspension design and a front-engine, transverse FWD motor layout.
In this video we look at new models from Lexus, Toyota, Chevrolet, Buick, Cadillac, Nissan, Hyundai, Kia, Dodge, Alfa Romeo, Subaru and more! This is the Camera I use: amzn.to/3oaRcZX (US) amzn.to/3KWQ2uU (Canada)
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The BMW G20 generation features a 2.0L four cylinder engine and 8 speed automatic transmission powering the rear or all wheels. In this video, we take a look at the engine compartment layout, including the engine air intake, lubrication system, ignition system, drive belt, turbocharger and exhaust, cooling system and braking system.
Underneath the car, we take a look at the underbody, engine, transmission, exhaust, differentials, engine mounts, steering and suspension layout. These are taken from the eye of a design, manufacturing as well as ownership layout when it comes to common maintenance items. Featured in this video is a 2022 BMW 330i with AWD and the 2.0L B48 engine.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Why the Chrysler World Engine is a Failurespeedkar992023-01-30 | Here's a full teardown of the Dodge / Jeep 2.0L 4 cylinder World engine and how it works!
The Chrysler World engine was co-developed with Mitsubishi and Hyundai. It uses aluminum block and heads with an open deck cooling design. They were most popularly found in the Dodge Caliber, Jeep Patriot and Jeep Renegade.
The engine in this video was working when pulled out of a Dodge Caliber. However it shows some evidence of engine wear in the bearings and pistons and a general lack of maintenance. There were a lot of areas where Chrysler could have improved upon, such as using less plastics around the engine and fastener coatings that don't easily rust and strip. This leaves the impression of a failed attempt at a quality engine, despite its simplistic design.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Failed Pentastar 3.6L V6 Engine teardownspeedkar992023-01-25 | ...Mini cooper engine teardownspeedkar992023-01-19 | ...Transmission FAIL: Why You Shouldnt Get Stuck in the Snowspeedkar992023-01-16 | Here's a teardown on a failed U151E automatic transaxle from a vehicle that got stuck in the snow.
Automatic transmissions work on the principle of planetary gearsets to achieve gear ratios. One of the three components of the gearset must be held stationary using friction clutches. The friction clutches are rings made of alternating metal and friction bands that lock up when hydraulic fluid pressure is applied.
When vehicle gets stuck in the snow, a typical driver's reaction is to rev the engine out to try and get the wheels some friction. This may cause the transmission's fluid to overheat, since the wheels turn at a very high speed in first gear, and a transmission cooler (if equipped) can not function when the vehicle is stationary. Furthermore, most drivers may also consistently rock the vehicle back and forth to free it from the snow. This cyclic loading on the clutches wear it down very fast as the fluid warms, and the friction clutch material can no longer hold the planetary gearset from rotating. The transmission is no longer able to power the vehicle since it cannot engage the correct drive ratio.
In this video a 2006 Toyota Camry 3.3L V6's U151E 5 speed automatic transmission is taken apart to explore the carnage of this failure. The vehicle had 360,000km on it. For the follow up related to this failure, please see these videos:
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Fuel economy vs Environmental impact...speedkar992023-01-11 | ...Toyota 3VZ engine: An Overheat Disasterspeedkar992023-01-03 | Here's a full teardown of the Toyota 3VZ engine to see what's inside and how it works!
The Toyota 3VZ engine is a 3.0L single overhead cam engine with an iron block and aluminum heads. The 3VZ-E engine used in this video is from a 2nd generation Toyota 4Runner, but was also found in Toyota's Tacoma pickups. It barely made 150HP and 180ft-lb of torque and was underpowered for typical 4Runner off road duty.
The 3VZ engine was associated with headgasket failure due to its design. Once the headgasket failed, coolant and oil would mix and engine could overheat. If prolonged, the coolant-oil mixture would reach critical lubrication components such as the cam and crank bearings and cause them to wear out excessively, as seen in this video. Furthermore, the mixture could clog water passages forming sludge.
The engine in this video was out of a 1995 Toyota 4Runner. Usually, when the headgasket is replaced and cylinder head checked for flatness, the issue should not arise. The engine is also limited in capability due to its two valve per cylinder design, since it cannot breath or exhaust enough air to make power.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Jeep teardown coming soon!speedkar992023-01-02 | 3.6L Pentastar Engine, transmission and 4WD transfer case from a 2018 Jeep Wrangler JL. Teardown coming soon!Jeep Wagoneer Mechanical Reviewspeedkar992022-12-19 | Here’s a look under the hood and underneath the Jeep Wagoneer!
The Jeep Wagoneer is a full sized body on frame SUV based on the RAM 1500 chassis. It features V8 (and inline 6 turbo charged) engines, an 8 speed automatic transmission, 4WD with a low gear transfer case and double wishbone front suspension, multi-link rear suspension.
In this video we will take a detailed look at the mechanicals under the hood: such as the engine, cooling systems, braking systems and general maintenance; under the vehicle: suspension system, transmission, differentials, transfer case, fuel tank and exhaust; and behind the wheels: suspension and braking systems to see what’s inside and how it works!
Overall the Jeep Wagoneer has a very good layout under the hood with the V8 engine. Components are easy to service and change out should they fail. However, under the vehicle, there are a few questionable decisions such as the transmission pan layout and starter placement that aren’t as service- friendly. The vehicle in this video is a 2022 Jeep Wagoneer Series 2 4WD with the 5.7L V8 engine. This is the Camera I use: amzn.to/3oaRcZX (US) amzn.to/3KWQ2uU (Canada)
Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies: etsy.com/ca/shop/Speedkar
The Ford Ecoboost line of engines was loosely based on Mazda’s L series of 4 cylinder all aluminum engines. In 2015, Ford updated this engine as it is currently used in production vehicles today. In this teardown we examine the main components and its construction, including its dual VVT valve train, cylinder head, integrated exhaust manifold, turbocharger, intake, direct injection system, cylinder block and lubrication system, crankshaft, balancer assembly and oil pan. While some external pieces vary between applications, most of the internal pieces are the same. As far as reliability, common issues will be carbon buildup, turbocharger manifold leaks, fuel pumps failing (both low and high pressure) and turbo boost controller solenoids failing. The engine in this video was from a 2016 Ford Focus ST, which may have been subjected to water intrusion from the PCV catch can. The engine did not show any signs of damage or water internally.
0:00 Introduction 0:39 Teardown 12:00 Analysis 15:43 FailuresJeep Grand Cherokee Mechanical Reviewspeedkar992022-11-23 | Here's a look under the hood and underneath the Jeep Grand Cherokee!
This 2023 Jeep Grand Cherokee features the 3.6L Pentastar V6 found in many other FCA products. Its paired with an 8 speed automatic transmission. In this review, we take a detailed look at the engine and its sub-components, the transmission, drive-line, transfer case and its AWD setup, the new multi-link suspension and frame architecture, the cooling system, braking system, steering, fuel system and exhaust.
Overall the Jeep Grand Cherokee remains fairly basic from a mechanical perspective, with most maintenance items located within very easy reach (with the exception of the starter motor). The new suspension uses two lower control arms and an aluminum tubular welded sub-frame. By reusing existing powertrains, Jeep has a reliable offering that not many capable SUV's can match in the market today, The power trains are dated and must soon be replaced by newer technology.
Skip to section in the video: 0:00 Engine 4:04 Suspension and Structure 10:19 Transmission 13:03 Electronics 13:35 Cooling 14:57 Cooling 15:28 Steering 15:56 Brakes 17:23 Exhaust 18:28 Fuel 19:40 Final Thoughts
A dual clutch transmission is internally very similar to a manual transmission – with the exception that the computer (mechatronic unit) is responsible for physically shifting the gears. Instead of a single dry clutch like in a manual transmission, a DCT uses two wet clutches, one larger than the other one to drive two input shafts to the transmission. The two input shafts will power either the even gears or odd gears.
Other accessories to the transmission include a transmission cooler, oil filter and oil pump that serves to cool and lubricate gears and bearings. The transmission computer is located inside the transmission mechatronic unit, which control solenoids to redirect fluid flow through a valve body. The valve body will in turn feed transmission fluid through the housing and into the pistons which will control the position of the selector forks and thus select the gear.
One advantage of a DCT is that it can shift gears much faster by preselecting the next gear that the computer thinks it will shift to. It does this by engaging the fork of the opposing gear that is currently being used. The downside is that it can often get confused if the driver has erratic inputs and therefore cause hesitation or jerky output.
Finally, while the wet clutch and gear synchronizers are often wear points on these transmissions, the mechatronic unit is often the fault for many failures.
The transmission in this video is a DSG (direct shift gearbox) D250 unit from a 2006 Volkswagen Jetta TDI.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Chevrolet Blazer Mechanical Reviewspeedkar992022-10-17 | Here’s a look at the Chevrolet Blazer under the hood and underneath the vehicle to see what’s inside and how it works!
The Chevy Blazer is a mid-sized SUV that’s placed between the three-row Traverse and 2-row Equinox in Chevy’s lineup. While it’s name is controversial, Chevy has opted to use its 2.0L Turbocharged LSY engine and 9 speed automatic transmission under the hood. It features variable valve timing and cylinder deactivation and direct injection. In this video we look at the major components under the hood as if you were to own and maintain this vehicle, including the intake, exhaust, fuel system, transmission, suspension, timing chain and drive belt, cooling setup, driveline, brakes and steering.
Overall the Chevrolet Blazer is an average vehicle that will do as most people expect a cross-over to do and perform. However, there lots of evidence of lack-luster build quality and design choices where GM has had to cut costs compared to its rivals in order to make this vehicle fit in as a place-holder vehicle until the Chevy Blazer electric vehicle will take over after 2024.
Skip to section in the video: 0:00 Introduction 0:30 Engine 3:47 Exhaust 5:12 Transmission 7:24 Suspension 12:30 Cooling System 14:06 Fuel System 15:07 Brake System 16:10 Steering System 16:22 Conclusion This is the Camera I use: amzn.to/3oaRcZX (US) amzn.to/3KWQ2uU (Canada)
Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies: etsy.com/ca/shop/Speedkar
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Why the Nissan QR25 Engine is Still Being Used Over 20 Years Laterspeedkar992022-10-03 | In this video we tear down a Nissan QR25DE engine to see what’s inside and how it works!
The Nissan QR25 engine is a 2.5L 4 cylinder engine. It is most commonly found in the Nissan Altima and Nissan Rogue, amongst other popular vehicles. It uses a timing chain driven variable valve timing camshaft on both the intake and exhaust sides. The intake uses tumble flow control flaps to promote mixing.
The engine layout is generally simple, using a plastic valve cover and aluminum alloy head, block and timing cover.
More importantly, the QR25DE engine has been around since the early 2000’s. Nissan has built upon it and improved it over the years increasing its power and efficiency while reducing emissions with the addition of direct injection. One distinguishing feature is that Nissan chose to use a ladder-frame bottom end design, which instead of using separate main bearings uses a ladder structure to secure the crankshaft. This is good for strength and rigidity and means the engine should be able to take more abuse.
The engine in this video was from a 2014 Nissan Altima that was totaled and was a working engine when pulled.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Fixing up this Mazda 3 car for sale.speedkar992022-09-26 | ...Why KIA Engines Failspeedkar992022-09-19 | In this video we tear down a Kia / Hyundai 1.6L Gamma engine to see what’s inside and how it works!
The Gamma series of engines is a 1.6L 4 cylinder all aluminum engine made by Kia and Hyundai for use in its small cars. This version is the gasoline direct injection version out of a 2013 Kia Forte. The engine failed due to a lack of lubrication, carbon and sludge buildup in the oil system.
The engine features a timing chain with variable valve timing on both the intake and exhaust side. The water pump is powered by the serpentine belt and the cooling system is an open deck design. The valve cover, sparingly made of metal instead of plastic, houses the variable valve timing solenoid for the exhaust side as well as the gasoline direct injection high pressure fuel pump, which is powered by the exhaust camshaft.
Turbocharged models, such as in the Hyundai Veloster will use an integrated turbo charger in the exhaust manifold at the back of the engine. Overall the engine design is very simplistic in nature, and a lot more reliable than Hyundai / Kia’s 2.0L and 2.4L Theta II engines found in the Hyundai Sonata and Santa Fe and Kia Optima and Sorento, of which you can find a video on the teardown here: youtube.com/watch?v=dxbZkVyd9cc
In this video, Volkswagen turbo diesel BRM engine from a 2006 Jetta TDI with 295,000km on it is torn down. Diesel engines have some major differences in operation and composition than gasoline engines. They are the most thermally efficient engine, despite the controversy surrounding its emissions. Diesel engines provide a lot of torque, which is why it is found in many heavier duty applications besides VW/Audi passenger cars.
Diesel engines vary in operation from gasoline engines in that their combustion is controlled by compression, rather than ignition. Air is compressed as the piston moves up within the cylinder and then fuel is injected near the top. The resulting high pressure and temperature causes the fuel to atomize and combust, without the need for an ignition source, such as a spark plug. Glow plugs are used only when the air temperature is very cold to help start the engine. The resulting combustion is uncontrolled and pushes the piston down, creating work to rotate the crankshaft. Piston heads have a small crater in the top to allow the fuel to be directly injected when the piston is at top center.
The amount of combustion and thus engine speed is controlled by how much fuel is injected into the cylinder, as opposed to a gasoline engine which uses a throttle body to control the amount of air. Thus, diesel engines benefit from a higher compression and by running lean using a turbocharger to force more air into the combustion chamber, and don’t need a throttle body during regular operation.
Skip to section in the video: 0:00 Introduction 1:11 Teardown 10:10 Analysis 12:37 Diesel vs Gasoline Engines 15:08 Conclusion
A turbocharger uses exhaust flow to spin a turbine, which in turn pressurizes the air coming into your engine’s intake. Air that is pressurized will force more air into the engine per intake stroke, and by adding fuel, the engine can create more power without increasing its displacement.
Turbocharging has become very common place in recent times due to stricter emissions requirements and compact vehicle designs. Turbocharged engines include the turbocharger, waste-gate (or boost controller, as in the case of a variable geometry turbocharger), intercooler, intake manifold, air intake box in addition to a host of plumbing and vacuum lines to control it all.
Having a turbocharger increases complexity and may affect reliability. With all the additional components over a naturally aspirated engine and by over-stressing a smaller engine, users may not get advertised fuel economy or longevity typically expected from a naturally aspirated one. The engine and turbocharger featured in this video is from a 2006 Volkswagen Jetta TDI. Skip to 6:03 for the teardown.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99The Toyota 2GR 3.5L V6 Engine is a Legacy in a World of 4 Cylinder Turbosspeedkar992022-08-03 | In this video, the Toyota 2GR-FE 3.5L V6 engine is taken apart to see what's inside and how it works!
The GR series of engines has been in production for almost 20 years and is still in production today. It has built a reputation for being powerful, smooth and reliable as it is used across Toyota's lineup but unfortunately may succumb to the movement towards more efficient 4 cylinder turbocharged engines soon.
The 2GR features dual over head camshafts with variable valve timing on both the intake and exhaust system and a very complex lubrication system comprising of oil passages that flow from the oil pan all the way up to the valve covers. In this video we cover the common failure points on the 2GR engine, including the VVT oil lines, water pump and timing chain cover leaks.
The engine from this video was from a 2013 Toyota Camry V6 that had a failed water pump. The engine overheated causing the head-gasket to warp and coolant and oil to mix.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Mercedes Benz M270 glass top engine coffee table.speedkar992022-07-27 | ...Why Subaru Engines FAILspeedkar992022-07-18 | In this video we tear down a Subaru Boxer 2.0L turbocharged engine to see what's inside and how it works! We also examine some of the common failure points on these engines and what to look out for if you are looking for a vehicle with a boxer engine.
The Subaru engine in this video was from an early 2000's Impreza WRX with an EJ20 engine. A boxer 4 cylinder engine has pairs of pistons that are horizontally opposed, lending for good engine balance and a low center of gravity. The disadvantages are that the lubrication system takes a longer time to drain back to the sump, making it challenging to maintain proper oil pressure especially if the oil is run low, in addition to maintenance challenges when working on the engine head, such as valve covers, spark plugs, valve adjustments or head gasket replacement.
Common failure points on these engines include connecting rod bearing failure (due to running too low on oil), oil and coolant mixing together (creating a lack of lubrication) due to head gasket failure, weak head bolts or under torque, oil consumption and ring land failure.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99How the AC and Heat Work in your Carspeedkar992022-07-04 | In this video we take apart the heating and air condition unit to see what’s inside and how it works!
There are four main functions in your car’s heating and air conditioning system, including the air source (recirculate and fresh air), fan speed, temperature and vent mode. All of these happen behind the dashboard in the HVAC unit. These are a subset of the air conditioning system (including compressor, condenser, drier, expansion valve) and the heating circuit (engine, radiator, thermostat and water pump).
The heater A/C box in this video was from a 2006 Volkswagen Jetta. Main components include the recirculating flap and its motor, blower motor, blower motor resistor, air filter, housing, evaporator core, thermostatic expansion valve, heater core, electric heater, temperature control motor, mode selector gears and mechanisms as well as vent valves.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Subaru WRX EJ20 turbo engine fail!speedkar992022-06-30 | Here we have a Subaru engine that has coolant in the oil pan!How to install a new android auto apple carplay Headunit in a Toyota Camry JBL.speedkar992022-06-24 | ...The Last Good Nissan Engine: VQ37VHRspeedkar992022-06-20 | In this video we teardown a VQ37 Nissan / Infiniti engine to see what's inside and how it works! We also examine what makes this engine so legendary as Nissan will never build a naturally aspirated V6 engine like this ever again!
The VQ37VHR engine is a 3.7L V6 engine, typically found in Infiniti G37, EX37, FX37, M37 and Nissan 370Z cars. It features variable valve timing with variable valve lift (VVL) on the intake camshaft, amongst many other upgrades that make this engine a very strong, reliable and capable engine.
Thus there is a strong following for this engine since its the strongest of all Nissan V6 engines, including a one piece cast aluminum bottom craddle that houses all the main bearings, in addition to forged internals and a timing chain setup. In this video we go through the inner workings of this engine by tearing it down to the bare engine block and cover how the variable valve lift system works in addition to the oil lubrication system.
This engine came out of a 2009 Infiniti G37 that had rod knock due to a spun connecting rod bearings. Oil consumption and leaky oil galley gaskets that can starve critical engine components of oil are a weak spot on these motors.
#infiniti #nissan #g37 #engine #teardown #bad #car #pressurewashing #asmr #cleaningThe Honda B-Series Engines was the Start of Hondas Golden Yearsspeedkar992022-06-06 | The Honda B series was infamous throughout the 90's as Honda's performance oriented small engine. It was used in the Acura Integra and higher trimmed Honda Civics amongst others. In this video, we teardown a Honda B18 engine from a 1990 Honda Integra that has catastrophically failed due to lack of lubrication. The piston and connecting rod were severely grenaded and punched a hole in the block!
The B Series engine was the first production engine to feature Honda's famous VTEC variable valve timing and left electronic control system. This was a proving grounds for many engines to come throughout the 90's including on the Acura NSX. In many ways, the B-series was the predecessor to the infamous Honda K-series engines, which you can find more information on in this teardown: youtube.com/watch?v=o_hbAl3BFuE
The B-series features dual overhead camshafts with rocker arms, an aluminum head and block and stamped steel oil pan. The oil pump is direct drive.
Subscribe for more videos just like this: youtube.com/subscription_center?add_user=speedkar99Honda Integra B18 Engine teardown Previewspeedkar992022-05-29 | Tearing down this failed Honda B18 from a 1990 Acura Integra. The destruction!Why the Toyota S Engines Are Super Reliable and Strongspeedkar992022-05-23 | In this video we teardown a Toyota 3S-GE engine from a Toyota Celica to see what’s inside and how it works. These old-school S- series engines from Toyota are renowned for their reliably as well as power output from their era. The 3S version is a 2.0L inline 4 cylinder, and the GE designates that the internals are beefed up and strongly built with forged internals, especially so since it also had a turbocharged option.
The 3S-GE engine features a bit of old and new technology, with fuel injection yet still using a distributor for ignition. Many vacuum hoses and switches wrap around the intake forming the control for Toyota’s variable intake system, with each valve having its own runner. The head and valve covers are aluminum alloy while the block is cast iron. Overall many components feel overbuilt for a small economy minded engine used in the Toyota Celica and MR-2 from the mid 80’s to early 2000’s.