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Head Gasket

LTHL34

By LTHL34,
in Engines & Forced Induction

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Unless the stocker is dead, nothing other than dropping compression. Its not a major drop either way.

oooodles of cars running around with 250rwkw, un-opened motors.

With the fuel quality (Shell 100 etc) there is no real need to do the old 'de-comp' from the late 90's/VL crew so you could run more boost etc without it detonating. You've got a motor 10 years newer, much nicer flowing head etc.

With the thicker gasket, no real need until your at the point of rebuild and chasing 300-350rwkw+ IMO. I believe my motor had a Tomei item after it went forged. On a relatively stock/mild setup, i'd go with factory, tried and proven and i think the cheapest option (if yours is dead)

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The Dan Grand Master

The Dan

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Standard head gasket is good for boost levels up to around 24psi and hp of around 600 at the wheels.

Could handle more but I've never tested one any higher

Metal gaskets were designed to be reused and to also drop compression like Nismoid said. It is a silly way to drop compression but small drops can be made this way if you had to.

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LTHL34 Community Regular

LTHL34

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Also, your friends at Rajab should be able to offer some advice on the subject as they have many hi-po cars getting about.

Yeah i spoke to them. My head gasket has blown at the back of the head so i was wondering if i should get a standard or the metal.

thanks for all your advice guys.

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STATUS Grand Master

STATUS

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Posted
also guys i have got one more quick question. are the welsh plugs on a skyline steel or brass?

cheers

steel welsh, if you do decide to go metal make sure the surface finish is done corectley ie 50RA or better

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