94 Merc Mariner 175 question...

[bigshrimpin]

That motor has lower compression b/c of the relief holes . . . so don't be alarmed when you see 100psi or less in all 6 cylinders. As long it's even . . . then your good.

[V20 SEAHAWK]

90, 90, 85, 65 , 85, 80... :( also had no spark so couldn't get it to run... no V for me :(

for now...
Aaron

[macojoe]

By it, swap motors and sell the old one, you would make out just fine!!

[bigshrimpin]

Probably stuck rings (65 and 80) and a bad powerpack or stator . . . it's a good negotiating point. I'm rebuilding one now . . . pretty cool motors.

[THEFERMANATOR]

There not that bad to build either. The MOST important thing to look for is a good hull. This is almost the whole battle right there. I can't tell you how many V-20's I've looked at with bad transoms, seperating knee supports, and spongy decks. If the hull's good negotiate it. At least then you can build up an engine that you will know is good.

[V20 SEAHAWK]

I would, but I don't know anything about outboard motors (i know plenty about cars, just not boats) and I live in an apartment complex and have no room to work on the motor... If I didn't have to mess with the motor I'd have it by now... it just adds to the amount of work I'd have to put into it :huh:

[bigshrimpin]

If he'll let you pull the heads and check out the cylinder walls on those two low cylinders for scoring or a bad head gasket(s) . . . then you might luck out. He's going to have to do it anyways . . . cause of 60psi in the one. If there's no aluminum skuff or scoring . . . you might be able to replace the head gasket(s) and decarb (power tune) . . . it's possible that will be enough to break down the carbon, free ring and restore compression.