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I have a 1988-85hp outboard force, what is the proper compression to have. I tested it at the begining of this season and it came in around 121-122. Also would a nikked prop slow my top speed down?
General rule of thumb all stock outboards is minimum 100psi.And within 10% between cyl.Yours is good.Factory max is 145-165.Yes a nicked prop can slow you down.If bad enough it could damage your lower unit. A prop shop can repair it at a reasonable cost.
