OMC Questions you motorheads

[THEFERMANATOR]

Originally Posted by phatdaddy

i have also found in-line 3 cyl don't like to idle , so don't spend a lot of time & money trying to get it silky smooth.

I have yet to see an OMC looper that likes to idle really good. As far as rebuild costs, it's a crap shoot as to what all it will need when you do it. A basic kit will set you back probably $450-550 plus machining, but if there is any other damage it can get REAL costly. As far as making it a 70HP, I'm sure it's doable but I believe you have to pull the powerhead off and modify the tuner can and swap the carbs. Some also used different cylinder heads and exhaust timing to get the extra oomph.