Header Gasket Help???!!!
http://www.youtube.com/watch?v=1TNy5mpz-oE
Even though your header flanges are thick it doesn't mean they are truly flat. Check them with a strait edge to make sure. A lot of people have had good luck with felpro gaskets I can't remember the part# of the top of my head though, I'll quickly search and post it.
Tighten bolts. Make sure you tighten them after a couple heat cycles. Then tighten them again after a couple more heat cycles. Do this like 5 times. I just use regular header bolts with lock washers. Not stage 8 bolts or anything like that.
If that fails you can try putting red rtv on the gaskets.
If it still fails you have a warped flange (or head), a crack in the header, or another problem (loose rocker or lifter noise or something).
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I had a hard time getting header flanges to seal until I found these gaskets
Also, I dont why everyone uses ARP or any of those crazy expensive header bolts. You dont need them. All I have EVER used is the $7.99 set of MR. Gasket header bolts at any parts store. I love em. Never had one back out. You just gotta know what your doing.
I had a "header leak" that drove me bonkers. I changed the gaskets IDK how many times. Eventually my friend kept telling me "you have another header leak!!!". I popped the valve cover, found out one of my rockers for #4 was loose, I reset it to whatever past lash (can't remember what it's supposed to be, lol) and never had a "header leak" again.
http://www.summitracing.com/parts/EAR-29DA3BERL/
I had a "header leak" that drove me bonkers. I changed the gaskets IDK how many times. Eventually my friend kept telling me "you have another header leak!!!". I popped the valve cover, found out one of my rockers for #4 was loose, I reset it to whatever past lash (can't remember what it's supposed to be, lol) and never had a "header leak" again.




