Uploaded June 2023 | Updated September 2026, 2 weeks ago

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True Race Cars can be very hard on components, particularly longer forms of racing such as Circuit Racing and Rally. Add Turbocharging and intake restrictors to the mix and things can get even more difficult and break more often.

On this episode of The Skid Factory we bring in a fabrication expert from Goleby's Parts and Fabrication to work through fabricating a new turbo manifold for a BMW E30 Improved Production Racecar.

We discuss the reasons for failure of the original piece, design changes on the new manifold, material choice and welding processes used.

You might be a pretty competent self taught fabricator but there is always something to learn from a pro, so grab a Lemon Squash, sit back and have a watch as Steady shows us how it's done.

Need Parts or fabrication? Give Golebys a call! https://golebysparts.au

Check out Matts Instagram to see more of his talented work! instagram.com/bangchong/?hl=en

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Please note: We're just a couple of Mates hanging out in the shed, There's no big production companies, fancy cameras or Scripts, We love what we do and try our best to create quality content for you to enjoy every week. Sometimes that includes a steering rack conversion, Other times it's as simple as bolting on some wheels to our daily drivers. Don't forget that working on cars isn't easy and can be dangerous. Use Ya Brain and take the necessary safety precautions whenever you're modifying your car. Consume Lemon Squash responsibly & Thanks for watching.
0:00 Intro
0:20 BMW E30 M42 Improved Production Race car
1:20 Why do exhaust manifolds crack?
3:10 Matt from Steady Fab
4:20 Why should you use 347 Stainless Steel for a turbo manifold
5:30 Staighteneing Exhaust Flange before Fabrication
6:00 How & Why to Sharpen Tig Tungsten
6:25 Purge Welding a turbine housing
7:25 Positioning the Turbo
9:44 Problems encountered when fabricating an exhaust manifold
11:20 Uni Mig Tig Welder settings explained
12:57 Fabrication processes
15:00 Distortion & Shrinkage with 347 stainless steel
17:50 Why Post flow during tig welding is important
19:08 Ideal External Wastegate positioning
22:25 Finished product
22:50 should you use 347 Stainless for an exhaust?
24:25 Bmw M42 Dump Pipe
30:28 The Skid Factory Bloopers

#BMW #E30 #m42