i am changing my head on my rb30t and wanna know whats the best head gasket to use and if there is a diffrence between the na and turbo head gaskets?

The best gasket is the one I have - Serco stock it and its made by Cometic. Multi layer metal head gasket. They cost just under $300 trade.

i had been told that the gen nissan one were the way to go???

yeah just get a geniune gasket Some original photos have not been recovered yet.

so i am guessen there is no diffrence between a na and turbo?

nope

thanks

nissan are the best of the basic line, and will do for most applications. i hear Cometic ones are pretty badass but you pay for it. maybe get one if you are going to be running heaps of boost?

i am only lookin at around 10psi - maybe 15psi thats it for awhile

Another vote here for the genuine Nissan article.

Nissan of course Some original photos have not been recovered yet.

Nissan are the best out of the generic fibre gaskets but if you are half serious, there is absolutely no substitute for a multi-layer metal gasket (NOT copper). The only step better than that is to use brass sealing rings or coopers rings, the latter of which are way out of the realm of a street car. The ultimate I guess is a monoblock - no gasket!

sorry to bring up an old thread, but i would have to thank kyle 6BOOST for giving me the idea of a cometic gasket Luke - i have found out that you can get them in different thickness, but what is the thickness of the genuine gasket ? Some original photos have not been recovered yet.

mine was 47 thou (genuine nissan gasket) measured with a micrometer. i would guess it would crush about 5-10 thou at full torque.

I'm a fan of the genuine gasket too, but when getting really serious and fitting o-rings what is best then, metal shim, copper or genuine??? I've heard copper are good as a receving groove is machined into the head and the gasket squashes into it making a perfect stepped seal. How does a metal shim go with o-rings??

Quote: Originally Posted by twinvl I'm a fan of the genuine gasket too, but when getting really serious and fitting o-rings what is best then, metal shim, copper or genuine??? I've heard copper are good as a receving groove is machined into the head and the gasket squashes into it making a perfect stepped seal. How does a metal shim go with o-rings?? I have an O ringed block in one of my cars (4 cyl) that uses a multi layer metal gasket. It holds 24 psi fine. My RB30 has a Tomei head gasket with no O rings, but that is yet to be run.

i would usually go genuine bt since this will be for a na conversion, looks like i will go the cometic one as they come in different thickness. i just want to drop the comp of my na engine just a little bit before i go to far with the rest.

i use a std Nissan gasket with 26 psi boost, no O-rings either, if u dont rattle the motor a std gasket will put up with a lot of HP. yes there are better gaskets out there, but if you dont need a better one, why pay more.

i am using a tomei 1.5mm multi layed steel head gasket, ment to be good for up to 40psi so i am told. but it cost me $600 lucky there reuseable

hey nz - that wasn't with a na engine was it ? that is what i am running.