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  1. K

    Installed Alpha 1 outdrive - Now having weird shifting problem

    i put my outdrive back on and now I'm having a weird shifting problem. It won't move to all three gears. So I seperated the lower drive unit thinking that the shifting gear in the lower unit was off (I replaced the water pump in the winter). When seperated the shifter on the boat moves nicely to...
  2. K

    What is the correct gear ratio? Alpha one 1986 3.7L 4 cylinder 190

    I am in the market to buy the upper unit for my alpha one outdrive. The upper unit is stamped 1.53 (Ithink it's a 3) which I believe is geared for a 8 cylinder. I was trying to find info on the web about what the proper gear ratio should be for a 1986 Mercruiser 3.7L 4 cylinder but not having...
  3. K

    Alpha I Gen I: What to do when pressure test fails & cannot locate leak?!?

    Hey guys, I have a Alpha I Gen I off the boat on a stand. Been experiencing gear oil accumulating in the bottom of the drive, in the prop area where the exhaust comes out. It pools up there and drips out. So I assembled a pressure tester, drained the gear oil and pressurized the drive to 15...
  4. K

    190 HP Mercruiser - Sudden Knocking noise in motor after bellows repair

    I have a 1986 Mercruiser 190 3.7L 224 CI engine and an Alpha one Stern drive. I am experiencing a loud knocking/rattling when the boat is under load. Now for some background history.... This year had the boat in the water, everything ran just fine and dandy. I was taking in water so the next day...
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