[107485]

anyone ever had this problem, i have stripped heads before and have gone as tight as i feel comfortable with, any suggestions? i may just take em out and just use sealant. 5.0 roller/hooker comps

 

[psivory]

My copper ones disn't seal that well, ended up using the ones Hedman sent with my headers and they have been fine.

 

[allenman85]

good mr gasket / felpro seem to seal better here too

 

[f100cleveland]

I got a set of SCE ones for a 4v Cleveland and they wouldn't seal for anything. Even annealed them and it still woudn't seal. Went back to the good Mr. Gasket ones and they haven't leaked since.

 

[F15Falcon]

Silicone!! No gaskets!!

 

[107485]

what kind, i have copper seal permatex, will that work? thanks arp-100-1210 rock they are on the way for more clearance on those header bolts, man its a bitch to get them on but not for long

 

[F15Falcon]

Take it for what it's worth, but I use regular ole Permatex Ultra Black silicone for the headers. The Ultra Copper doesn't seem to stick to anything very well and that is why I stopped using it. I haven't bought header gaskets in 14 years, so I stay with what works.

 

[dfree383]

New SS Graphite Gaskets

 

[gork1rogues]

Ultra Black.

 

[mikemustang289]

does the silicon seal well? I would think that if the headers aren't perfectly flat that any area where there is thicker silicon would blow out?

How long do you wait for the silicon to dry before you can start the engine?

 

[outrgus]

i use cheap paper gaskets, soak them in water for a couple of hours, install them, then fire it up, when they get hot the water evaporates, and they stick like glue and no leaks.

 

[badbird]

Old cheapy steel gaskets that came with the rebuild kit but I have a trick my buddy showed me. He owns a muffler shop and is a all Ford hot rodder and racer; he uses Tremcald roofing tar(insta-patch). I did the same trick and have re-used these gaskets 3 times and no leaks.
I've heard that the loc-tite cooper with no gasket also works well.