Help me with these comp. test numbers...

Nosboss

New Member
Dec 17, 2007
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So I feel like my engine is down on power. I did a compression test today and need to make some sense of the numbers. I did it dry and then wet with a squirt of WD40 in the cylinders. My engine is a 306 and has 58cc combustion chambers and 9.5-1 compression ratio. Here are the numbers I got...

Dry cyl 1-8

145
132
140
142
147
144
146
142

Wet cyl 1-8

150
142
145
144
149
150
150
143