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.020" overbore and head gasket question

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Old Dec 7, 2011, 10:39 PM
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.020" overbore and head gasket question
I'm currently having my block bored .020" (or .5mm) over so it's 85.5mm total. I'm trying to figure out if I would need to machine the OEM head gasket to make it fit or will it fit just fine? If I shouldn't machine, then who makes a gasket that's .020" overbore?
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Old Dec 8, 2011, 02:40 PM
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I'd like to procure this knowlege as well...
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Old Dec 8, 2011, 03:47 PM
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im pretty sure the stock head gasket is good up to a .040" overbore on the 4g63.
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Old Dec 8, 2011, 06:16 PM
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My engine is .040" over and it has an OEM VIII headgasket.
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Old Dec 8, 2011, 07:37 PM
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Sweet. Thanks guys.
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