So I did the compression test as outlined above I have only had this motor for about a month and havent had a chance to put it in the water as there is about 8" of ice standing between me and it I was just wondering if these #'s sound good or about average for a 1975 85HP Johnson V4 engine.
Sound great to me. From what I understand, the actual numbers are not really that important as the testers aren't real accurate in that regard but they ARE consistant. Yours being over 100 and so closely matched is a very good thing.
Thanks EZ! I was looking for factory #'s just out of curiousity but I coudn't find any.
So the Starmada does venture out into the world of Iboats. I thought we all just hung out there like a cult or something
That engine when new probably had close to 125 lbs compression, so your current numbers are just fine. Also, it is not unusual for the compression to vary a few lbs from one head to the other, due to the way the blocks were machined at the factory. Looks normal!