Hello Cowtown Cobra,
All of my various exhaust orifices have leaked at one time or another causing backfires
If it's the collector, the best seal is this soft copper one (or equivalent from other vendors). If it's good enough for AA fuel dragsters, I reasoned, it's good enough for me
Copper collector gaskets
If it's the header gaskets (been there too - still there
) it takes more. Here's a gasket set:
Header Seals
and don't forget some sort of locking bolts:
Stage 8 locking header bolts
There are other brands of locking header bolts available.
And don't forget that there's still Permatex Red high temp sealant to try.
Does all this work? I don't know
It depends on vibration, temp, thickness of flanges, load on the joints (well all those pipes and stuff do sort of hang off the header flanges, don't they?) and intangibles.
It's a good idea to check the bolts pretty frequently too.
If you find a better way, please let the rest of us know
Regards,
Tom