homemade exhaust manni???
 

its for a 97 gti vr6. how should i do it? any1 no of any templates for this type of car. what shouls i use to make it ect.???? welding it is not a problem. also i was wondering if i could use a 1/4" sheet off aluminum for the flanges ect. thanks in advanced

Re:homemade exhaust manni???
 

Hmmm...not sure if I would use aluminum, but I have never made a manifold.

www.mcmaster.com
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Re:homemade exhaust manni???
 

don't use aluminium for the flange.
uhmmm it's a custom mani soo you have to custom fab it your self...measure and test

Re:homemade exhaust manni???
 

Why aluminum sucks for exhaust purposes:
https://www.homemadeturbo.com/tech_p...m-melted_P.jpg
Image courtesy of HMT.

Re:homemade exhaust manni???
 

Just use your stock mani and chop off the pipes. Voila! You now have a flange!

Re:homemade exhaust manni???
 

guaranteed to crack out!

that's a good plan.

Re:homemade exhaust manni???
 

whats gonna crack out ???

Re:homemade exhaust manni???
 

Use your exhaust gasket and trace the pattern on a 3/8" thick piece of flat steel (I've used 4" X 4" X 3/8" angle) cut it out square. Use a 3/8" drill bit and drill around the outside of your trace..........yes it's a million holes. Then I used a jig saw with 24 teeth/inch to cut the material between the holes. Use a grinder to smooth out the material. (It will look like someone bit into it all the way around)

Use hole saws to cut the individual holes for the exhaust. If its oval use a hole saw to cut as close as possible then use a die grinder to remove the rest of the material.

For the bolt holes just drill out where you traced it out from the gasket. (preferrably on a drill press for accuracy)


If anyone needs clarification IM me or I will take a few pics and post them up of the steps.

I've mave all my flanges using this method.

Re:homemade exhaust manni???
 

I've found out that the $25.00 flange is worth the money. The time it takes to make flanges is much greater than the $25.00 they cost.

Re:homemade exhaust manni???
 

True dat!! But he wants one for a VR6, so if they make one for his appliction and its $25, go for it.