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1983 Evinrude 140 Hp compresion question
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<blockquote data-quote="Pappy" data-source="post: 159286" data-attributes="member: 3278"><p>There were so many different configurations of pistons, piston ring heights, port heights, and cylinder head changes going on in the older crossflow V4 family that it would be pure luck to know what it should be on your engine. This is especially true since yours has been rebuilt. The rule of thumb in the OMC manuals is that the compression should be within 10% of each other.</p></blockquote><p></p>
[QUOTE="Pappy, post: 159286, member: 3278"] There were so many different configurations of pistons, piston ring heights, port heights, and cylinder head changes going on in the older crossflow V4 family that it would be pure luck to know what it should be on your engine. This is especially true since yours has been rebuilt. The rule of thumb in the OMC manuals is that the compression should be within 10% of each other. [/QUOTE]
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1983 Evinrude 140 Hp compresion question
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