psi on stock head asket?

[nomenai]

any one what's the max psi on stock head gasket?

[Joe]

uhhhhhh what engine?

[nomenai]

rb20det

[Carl H]

mine heald 18 fine...depends on condition of the motor really, but it should hold a bit.im planning on running a stock hg with arp studs and oringed block when my motor goes back together, according to the aussies its good for about 30psi with that setup .

[nomenai]

some one toll me is like 15 psi ??? whats the true???? any one

[Joe]

there is no set answer.

bottom line is there are a ton of other things that need to be replaced before the headgasket becomes an issue.

[takaramotors]

gasket set will be shipped soon

[lucky7]

correct me if im wrong. but, isnt 20psi on a BIG turbo a little different than 20psi on a little turbo??

j/k. there are lots of variables like mentioned.

[gawdzilla]

no, 20 psi is what it is. 20 psi at your manifold. small turbo, big turbo, air compressor, bicycle pump, all the same.

[Carl H]

psi is a measure of pressure not airflow.airlfow at 20 psi on a big turbo is going to be much more than 20psi on a small turbo.

[Joe]

psi is a measure of pressure not airflow.airlfow at 20 psi on a big turbo is going to be much more than 20psi on a small turbo.

right, and since headgasket failure has little to do with flow, more to do with pressure its more of a PSI thing than a flow thing.

[Bronze MFP]

I havn't read of anyones headgasket failing that I can remember. These are RB's we're talking about here, not 7MGTE'sZING!

[Kansei240sx]

Burn to the 7m ---^ lol.

Yeah, on 440cc injectors running about 20 psi on an SAFC it'll run fast as hell for awhile and then the head gasket will go slowly.

How do i know this? Theres a guy in town here on his third one. D: