So, I bought a 1973 Starcraft Capri 15 with a Johnson Javelin 85HP and trailer for $500.00. I brought it to a marina to be looked over, the motor has very good compression, but there are some things that need to be replaced. One of the power packs, coils, starter gear, and spark plugs. About $800 worth of repair, which includes labor. The gears are all good in the lower unit, no metal shavings? Not very familiar with marine motors. Also the repair costs include replacing all the seals in the power tilt/trim, there was no fluid in that system. My question is it worth it to spend $800 on a 1975 Johnson 85HP motor? How long do marine motors last if they are taken care of? I looked into new motors and they are very expensive about $6000, so I think it is worth it, but I am new to boating. I have rebuilt cars, but never worked on marine motors. Any suggestions?