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Anyone out there running low compression motors?
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<blockquote data-quote="OldSailor85" data-source="post: 518997" data-attributes="member: 36164"><p>Lots of older two-strokes have pretty low compression. I've had a couple that 90 psi was normal. Mostly motorcycles.</p><p></p><p>Some as low as 6:1, lower than 8:1 is common. Check the manual.</p><p></p><p>Lots of thing can affect compression. Cranking speed, throttles wide open or not, air box on or off, type of tester, etc.</p><p></p><p>As long as compression is within 10% or so of each other, I would say they are good.</p></blockquote><p></p>
[QUOTE="OldSailor85, post: 518997, member: 36164"] Lots of older two-strokes have pretty low compression. I've had a couple that 90 psi was normal. Mostly motorcycles. Some as low as 6:1, lower than 8:1 is common. Check the manual. Lots of thing can affect compression. Cranking speed, throttles wide open or not, air box on or off, type of tester, etc. As long as compression is within 10% or so of each other, I would say they are good. [/QUOTE]
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Anyone out there running low compression motors?
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