hi i have a 3.7 lx mercruser 4cylinder long block complete engine including all axselleies. I've spent alot of money on this engine paid 2000 for complete re build plus all new parts it's approx 1980 .. it's starts up first time and is on the button .problem after powering up...I started to hear a knocking noise ..I guess the machanic didn't do the shells properly to the crank shaft so will need looking at checking over . gone to the expense of buying a new engine so will list it as parts or repair I'm sure it will do someone a good turn based in the uk now out of the boat on a pallet ready to go...it's a very clean engine with oil cooler and all pipe work ..you know how much all this stuff cost to buy separately...check it out before summer
eBay