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Compression ratio? 1800 1973

posted by  ColinSpikes on  Mon Jul 7 04:30 CST 2003
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last visit: Thu Jul 28 21:06 CST 2011
[RELATED]

I have a 1973 1800ES with a B20F engine, what is an appropriate compression ratio for it? I'm going to run a compression test and want to know where it should be.

Thank you,
Colin Spikes
Fox Island, WA







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Compression ratio? 1800 1973

posted by  Phil S. on  Mon Jul 7 05:44 CST 2003
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

Compression ratio is 8.7:1.

At cranking speed, this will read *roughly* 140-160 lbs on the gauge. Compression tests are not quantitatively accurate at all -- what's important is that you get fairly consistent reading from all cylinders.







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