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Club G40 Forum

Technical => Engine and Transmission => Topic started by: Jezza-7 on June 02, 2011, 05:44:39 PM

Title: 6n metal head gasket or standard g40 one
Post by: Jezza-7 on June 02, 2011, 05:44:39 PM
As above really. Whats the difference and what should i go with?

Head has been skimmed and the bottom end looks level. Have checked it out with a straight edge.
Title: Re: 6n metal head gasket or standard g40 one
Post by: jez1272gt on June 02, 2011, 08:57:32 PM
a metal one is thinner therefor increasing your CR. as you have had the head skimmed i would go with a standard one. will be good for all but the highest power G's...
Title: Re: 6n metal head gasket or standard g40 one
Post by: hayesey on June 02, 2011, 09:58:16 PM
well I would say with a standard CR bottom end, go for the thinner one.  Assuming the car is in good order a slight increase in CR is only a good thing
Title: Re: 6n metal head gasket or standard g40 one
Post by: Jezza-7 on June 02, 2011, 10:59:13 PM
Ok then i will stick the metal one on.

Cheers
Title: Re: 6n metal head gasket or standard g40 one
Post by: stuG40 on June 03, 2011, 12:02:30 AM
I'm going for the metal one aswell, but my block is bored out to 77mm, and the metal head gasket is 76.5mm is this still ok to use???

cheers..
Title: Re: 6n metal head gasket or standard g40 one
Post by: hayesey on June 03, 2011, 09:21:05 AM
the metal one is still ok to use, just.  plenty of 1341cc polos use them
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