So what are the best gaskets to use from the manifolds to merge pipe?

 

rtv gasket maker

 

Wow anything else

 

Whats wrong with stock gaskets?

 

http://www.kurturbanperformance.com/...r-gaskets.html

 

See that's what I'm talking about

 

Are the stock gaskets not up to the challenge?

 

Stock gaskets don't really work unless you use the stubs off the old Truck Y pipe. One side used a big dounut gasket and is press tight and the other side as a small groove cut in it and a small ring gasket sits in it

 

Sce4210

 

RTV

Everything else leaked for me including the expensive copper gaskets.

 

V band flanges

 

Is it the thickness that helps or material?

 

Make sure the surfaces are clean and flat and use RTV like mentioned...Why would you need anything else it works great.

 

i use the stock oring gaskets (used the factory flanges on both sides)

 

Ive used both the RTV and the Copper gaskets. Copper always worked great, no issues. tried the RTV and it was fine, but a few months later I could see a few small spots where soot was coming out. No big deal, but not perfect. Now I use the copper gasket, and cover both sides with RTV. Best of both worlds