Just a question on cleaning and blasting air into the engine - i was told you should not blast air directly into the engine bearings as this would cause damage to them but anywhere else in the internals are fine. Is this true?
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Before last weekend the piston on my RB V12 5 port could only travel half way up the sleeve. After last weekend's Asian Mugen Cup Finals, it now travels all the way up the sleeve infact slightly above the top of the sleeve without any compression left? I was running with 0.4 head shims, No.6 nove plug, 25% byron and at a race temp between 110-130c. There is slight freeplay between the conrod bushing and the crank pin. What went wrong?