Re: What header gaskets to use for ATR's??
I would like to ask though, out of the people having problems with leaks did you check the flanges for straightness?
I battled some leaks with my atr headers using both copper gaskets and high-temp rtv. I took the headers into my machine shop and had him deck the flanges since they were a little out and then used the SCE copper gaskets and haven't had a leak yet. Also at that time I installed the stage 8 locking header bolts so I never have to check them again. I heat cycled the system once then checked the bolts and install the locks.
So food for thought about guys having issues, even though they are bolted down if they truly are not flat you might have issues no matter what.