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Post by vectisitch on Oct 14, 2021 13:04:35 GMT 1
After my powervalves gave up the ghost I took the top end apart. Noticed it had a fast road tune done but standard head. I had 0.6mm skimmed off and used an Athena head gasket. I've never checked squish before and tried it. It was easy to do and showed my squish now as 0.9mm with the Athena being 0.6mm thick. Perfect. So before with an oem gasket of 1mm and no skim I must have had a squish of 1.9mm. So that and badly out of sync pv's no wonder the bike felt very underpowered. It goes like stink now.
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