Head gasket wont fit overbored 4G52

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Head gasket wont fit overbored 4G52

Postby Rally_2.6LC » Tue Oct 24, 2017 8:08 pm

Hey guys,

I've got a 4G52 which has been bored out to 90mm and the pistons sit 0.4mm proud of the block, built by previous owner and can't get in contact with them.
I cant use a standard head gasket and the 4G54 one is obviously too big in the piston bore at 92mm to use.
Has anyone bored an engine out this far or had custom head gaskets made?
Spoken to some people who say use a thin custom made copper head gasket.
I am wondering if anyone has used someone in Sydney and what the prices of copper gaskets was or know somewhere to get custom normal gaskets made.

'75 GC daily (slowly dying)
'80 LC 2.6L rally car (generally something broken until 2 weeks before an event)
'71 GA 2.6 Turbo project (i only wanted the diff and got another project)
^This side up^

Formely "Matt"
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Re: Head gasket wont fit overbored 4G52

Postby C_Fernance » Wed Oct 25, 2017 4:19 pm

Precision International sell head spacer shims in 0.8mm and 1.5mm for under $50. Not really a gasket but it might help with raising the deck height to clear the pistons.
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