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What compression ratio do I have?

Discussion Forum at MarineEngine.com » OMC Sterndrive and Inboard » What compression ratio do I have? « Previous Next »

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Robert Carlson
Member
Username: floater1

Post Number: 76
Registered: 10-2008
Posted on Tuesday, October 27, 2009 - 09:23 pm:   Edit Post Delete Post View Post/Check IP
Its a '78 OMC 305 225 horsepower. I'm guessing 8:5:1 or maybe even less? I should add that this engine is completely stock and never been modded.
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RRB
Member
Username: arcrat

Post Number: 76
Registered: 01-2009
Posted on Monday, November 16, 2009 - 11:57 am:   Edit Post Delete Post View Post/Check IP
Sounds right

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