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I bought my car with headers and havnt taken them off yet.
The gaskets are blown and I need to replace them.
What kind of gasket should i get ?
I want the aluminum ones... fel-pro i think ?
I don't know what kind of openings they have or anything.
Can anyone give me a company and a part number please ?
Thanks !
I'm going to put in some Percys aluminum gaskets to give my plugs a little more clearance. If you are blowing header gaskets, theres a couple things you can try. $30 header bolts called Stage 8s, which have a locking snap ring type thing to keep them from backing out. If you keep re-tourqing your bolts and they back out and you don't want to try the Stage 8s, then some people recommend cutting a line throught the aluminum flange between the 1/3 2/4 5/7 6/8 headers to allow for expansion/contraction. Basically though, if you have your bolts torqued (and retorqued) down properly, you shouldn't blow out any quality gasket.
The aluminum gaskets are made by Percy's. I am running them right now with no problems. I was using their collector gaskets as well but I tightened them down so hard that I deformed them enough for leaks. So right now, I am using Ultrseals for the collectors. I did have Ultraseals on the headerts previously and they are also a good choice.
Couple of little tricks.
1. Make sure your header flanges are flat.
2. Cut the flanges between the two center pipes and the outside ones. Two cuts per a header flange. O-|-OO-|-O
This lets the flanges sit better without afeecting each other.
Earl's came out with a new header gasket which I have but haven't installed as of yet, Summit is the only one selling them right now from what I have seen, they use large insert graphite seals for around the ports which are replaceable in a thick aluminum backing, they are very impressive looking. I could never get the copper gaskets to seal on my big block, right now I have a doubled up set of paper ones on there and they work OK,once they blow out I'll put the Earl's set on.