What is everyone using? I bought a new one from Mazdacomp and it is made out of some kind of soft material. Has anybody had any problems with these at <20psi? I also have two 2-rotor gaskets that I could cut up to use in place of the 20b gasket.

 

Try the PPP gaskets, they are re-usable, cheaper, and should hold up better. Go to ebay and look up " PPP 20B gasket".

 

^ link to that gasket.

http://cgi.ebay.com/ebaymotors/Rx7-R...spagenameZWDVW

 

"You can expect as much as a 5% increase in horsepower with the use of this gasket set. If you prefer, you can stack our gaskets for more performance potential."



Great. I'll give it a shot.

 

you see, you cant go wrong!

 

so if you stack like 20 of those you get like 100% increase in power !!!...cool i am gonna get me some

but seriously , you cant cut a 2-rotor gasket and make it fit ..the holes on the cosmo are bigger

 

I have 2 sets of lower and upper intake manifold gaskets straight from Mazda, brand new in the bags still if anyone is interested....
Make me an offer on them!

 

Damn, i'm going to have to pick up a set of those while my car is apart.

 

got mines on ebay and they seem to work great