Advice on cracking WG welds. Any suggestions??

[unlikely hero]

Ok I'm looking for some sort of flex pipe or slipon piece to keep my wastegate piping welds from cracking. The big bi*** is its 1.5" (38mm) and I can't find anything this small. This setup is for a different car entirely so theres nothing aftermarket wise for it. Anyone have any suggestions where to find something like this that I need? Thanks
=Jason-

 

[awdrst]

JC whitney has mandrel bends that are 1.5" I'm pretty sure you can get them in stainless and aluminized. One question though why are your welds cracking at all?

 

[ChvyKc]

JC whitney has mandrel bends that are 1.5" I'm pretty sure you can get them in stainless and aluminized. One question though why are your welds cracking at all?

I think that he was asking for a flexible section for his dump tube and I am not for sure where you could find one of those. You may want to call Summit and see if the guys there can source you out something.

I am also wondering why your welds are cracking. I would think that if you have a flex section in the downpipe then then the wastegate is going to move with the manifold, turbo, o2 housing, etc. and everything should hold together. I am guessin that you are running the dump back into the downpipe and that is why it is cracking, but I have never heard of the piping running from the wastegate to the downpipe cracking. Maybe if you give us some more info on the set-up then we could help you out a little more.

 

[waylon]

http://www.epiflex.com/epi_flex.html

 

[ChvyKc]

http://www.epiflex.com/epi_flex.html

Glad somebody could find it, I looked forever last night and I couldn't find anything like that. It's good info to have just in case.

 

[unlikely hero]

Its not that it has cracked, its just I'm worried it will. Thanks for the link but I need something smaller than that so I don't know what to do. i've heard of a slipfit setup but not sure how that would work.
=Jason-

 

[jackalopeTsi]

ive seen setups for audis and porsches that have flex pipes in the dump pipes. but ive never seen a reason for it on these cars. here is somethink that may help, probably a little too much though.
here ya go

 

[ChvyKc]

In my opinion, the turbo and the manifold or the downpipe and the manifold would have to be vibrating against each other for the welds to come off. I would think that since the manifold, turbo and downpipe should be moving together that they would be fine. If that wasn't the case, then anybody with a tubular manifold would have to have flex sections on each runner to keep the welds on the manifold from cracking. (I hope that makes sense )

 

[jackalopeTsi]

i think were all missing this part of his initial post

"This setup is for a different car entirely..."

 

[ChvyKc]

i think were all missing this part of his initial post

"This setup is for a different car entirely..."

Yeah, I caught that, that is why I said in my first post if he gave us some more info on his set-up that we could probably help him out more.