How to build a top mount manifold with minimal warpage

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10-17-2006, 09:03 AM

#21

hondacivic00

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Join Date: Apr 2004

Posts: 144

Re: How to build a top mount manifold with minimal warpage

great write up and awesome work Aaron!! Wondering if you are still doing the flanges and stainless material? I need some straight pipe and t's - flanges wouldn't hurt either - since your in Canada I wouldn't have to pay for customs. Let me know.

EJ

10-17-2006, 09:08 AM

#22

bumblezc

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Join Date: Sep 2003

Posts: 3,751

Re: How to build a top mount manifold with minimal warpage

Quote:

Originally Posted by weiRtech

i've noticed that too, that is why i left them tacked to the head. a lot of people break them from the flange and the collector and weld them off the manifold, but in my experience they never line up again when you go to put it back together.

i use 100% argon for all tig welding. a ss or brass wire brush can be used for cleaning. i use 1/16" 309L filler for the complete manifold.

Same here, never lines up right if you welder everything off the flanges.

10-17-2006, 11:50 AM

#23

LSD Motorsports

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Join Date: Aug 2003

Posts: 2,898

Re: How to build a top mount manifold with minimal warpage

Quote:

Originally Posted by CSaddict

Actually I tack them all on in the correct position in multiple areas around each one. Then I weld them. I do all 4 at the same time. Usually if you do one at a time it will pull the others out of position.

You are 100% correct, i always tack everything at least 4 places before beginning to weld. You are also right, if you have a 4th runner made and then weld the other three, the 4th piece wouldnt line up. However in our case, we usually dont even start the next runner until everything else is welded, so we then make sure it lines up accordingly. They need to invent some cheap metal that doesnt warp