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Compression test numbers seem high? 1800

posted by  beast on  Tue Aug 8 13:24 CST 2017
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last visit: Sun Feb 24 22:02 CST 2013
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I am just guessing that maybe the compression ratio is higher than you calculated. I did an engine a few years back that was about 10:1 & compression test was yielding about 185-190. I had the same issue with dieselling. With the crappy gas we get these days I ended up breaking all 4 top rings due to detonation. I guess the only real solutions are: retard timing, use avgas, or use water injection






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New Compression test numbers seem high? [1800]
posted by  erik1463  on Tue Aug 8 11:09 CST 2017 >


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