1977 Johnson 85hp

penrosefred

Cadet
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Nov 8, 2007
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8
I just checked the compression on the motor it was 96,95,94,&95 what is suposed to be.
 

HighTrim

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Jun 21, 2007
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10,486
Re: 1977 Johnson 85hp

What is important is that the cylinders are even and within 10 percent of each other, which yours are, so I wouldnt worry. All gauges are different and read differently. The temp of the motor when tested also changes the readings.
 
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