I have seen a couple steups that have had a flange welded to the cast exhaust manifold. Is this a good idea? I have talked to a couple people and they think that the welds will not stick. Thanks

 

you have to heat up the cast before welding it, just gotta know what you are doing.. my friend did it to a dsm manifold and it works fine...

 

So maybe gas weld it. Or just heat it with a torch then weld before it cools i guess. Well thanks ill have to try it out.

 

ive done quite a few dp pipes using factory o2 housings and have never pre heated anything none of them have brocken yet

Beau

 

beau, are you using mig or tig? i dont nkow if the same thigns apply for mig but from what my friend was told is to heat up the cast and piece you are welding before tig'n it up..... but who knows i could be wrong..

 

I welded some stuff to cast, and it all broke off easily...
So I dunno what the trick is..

-Henry

 

"I welded some stuff to cast, and it all broke off easily...
So I dunno what the trick is."

I guess i just have a gift

Beau

 

done it quite a few times with good luck - I had these welded by a certified welder friend - to make sure I didn't overheat it - the turbo was also braced to the block on both of these to keep the weight off of the weld but they worked great. the first 2 are just the turbo flange welded on. the second one had a new steel flange welded to a cast manifold.