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    omc outdrive

    What outdrive is this? i think its on a 4 cyl engine. Would this outdrive work for a 6 cyl engine?
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    Looking for used merc gears

    1974 merc 85hp ser#3869451 looking for used pinion gear pn# 43-56518 and fwd gear pn# 43-56517t3 anyone got one of these laying around?
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    Lower unit causes bad knocking noise

    Just bought a boat that i knew the engine needed rebuilding. 1974 merc 85hp. Got it rebuilt and started it without lower unit on, sounds good, slap on lower unit and has the same knocking noise i thought was in the powerhead. Guy i bought the boat from says it is a new rebuilt lower unit, and...
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    piston rings

    Im replacing the rings in my 1974 85hp Merc, Old rings are chrome new rings are not, is that a problem?<br /><br />thanks Marty
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    Knock knock ??

    Have a loud eng knock in a 1974 85hp merc. <br />Split the case expecting to see some dammage and everything looks good! Only thing i found so far was lower crank bearing a little noisy and had a tiny bit of play in it. Is that enough to cause a loud engine knock?
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