I just bought a 17.5' runabout a couple of months ago not knowing much about boats/motors. I floated and ran so I thought "great"...you see where this is going... We had it out a couple of times ran fine but with a bit of an idle issue so I had it in to the Johnson/Ev. specialists near me to have a general tune-up and go-over. Turns out it's a 140hp power head put on a 90hp lower unit/leg with the starboard lower piston rings broken needing a rebuild. The quote to repair was way more than I can afford but I found a guy locally selling a boat with an early 80's 90hp that runs but has the water jacket bolt stripped but running and decent compression all 4 cyls. Would it be worth getting if the price was low to try and put a decent power head on? The current 140 has already been rebored to 0.030 as well so reboring to .040 would not be worth it to me as the sleeve would be too thin. Anyone have any experience with this sort of thing?
tia.
tia.