Sefton-EP91 Posted August 14, 2014 Posted August 14, 2014 I have the Athena 1.2mm headgasket but am having 74.5mm pistons, do I need a bigger bored headgasket or will I be fine with what I have? Thanks in advance for advise. Quote
GP82 Posted August 15, 2014 Posted August 15, 2014 Yes your gasket bore need's to be .5mm bigger then your cylinder block bore so 75mm. Quote
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