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The Terminator
Engine/Tuning
Guide me in the right direction...bad compression
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<blockquote data-quote="Quick Strike" data-source="post: 12731603" data-attributes="member: 11920"><p>If the compression increases when you add oil, there is something wrong with the bore/rings/ringland/piston combination in that cylinder. This should be confirmed with a leak down test as suggested. You will hear air escaping into the crankcase in that cylinder. </p><p></p><p>If this is the case, your next issue is if you can get away with just a slight hone and one new new stock piston/ring combination, or if you have done damage to the bore requiring an oversize. If you are in for one oversized piston, you are in for eight and an engine balance.</p></blockquote><p></p>
[QUOTE="Quick Strike, post: 12731603, member: 11920"] If the compression increases when you add oil, there is something wrong with the bore/rings/ringland/piston combination in that cylinder. This should be confirmed with a leak down test as suggested. You will hear air escaping into the crankcase in that cylinder. If this is the case, your next issue is if you can get away with just a slight hone and one new new stock piston/ring combination, or if you have done damage to the bore requiring an oversize. If you are in for one oversized piston, you are in for eight and an engine balance. [/QUOTE]
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Guide me in the right direction...bad compression
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