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  1. emmurphy50

    Mercruiser 470 Coolant Loss and Milkshake Oil

    Hello all... I have an odd situation. After a great two weeks in the Adirondacks, I came home and after not getting my boat to start at the ramp on a night I was short on time with my kid, I brought it home. I found my coolant was gone out of the reservoir (and also the reserve tank) and found...
  2. emmurphy50

    1981 Wellcraft Sunhatch - Odd Control Panel Issue

    I have an unusual situation where when I turn on the "panel" switch which should turn on the panel lights, or the two way anchor/navigation switch to navigation (which should have no effect on the panel lights) and a number of the gauges go haywire, including the fuel gauge goes off scale...
  3. emmurphy50

    Small Trickle of Exhaust Water Down Back in Bilge - Merc 470

    Greetings... 1981 Mercruiser 470 on a '81 19.5' Wellcraft Sunhatch - Lifetime boater now getting into my first real boat. Always fresh water run. I have a small leak of warm exhaust water running down the interior stern of my boat, only when underway, and not when on muffs in the driveway...
  4. emmurphy50

    Falling Outdrive

    Greetings... 1981 Mercruiser 470 on a '81 19.5' Wellcraft Sunhatch - Lifetime boater now getting into my first "real" boat. Late last year, I replaced my failed outdrive with an SEI, which called the snow gods to an early winter here in upstate NY. The old hydraulic rams had external tubes...
  5. emmurphy50

    Hydraulic Trim only goes up (and up), either direction

    I put a new SEI 106 on my pre-alpha 470 bellhousing and found the outside tube on the rams interfered with the anti-cavitation plate. The rams may have pre-dated the boat vintage - but the tubing loop at the forward port on both rams kept the spacing too wide at the front. So... I happen to...
  6. emmurphy50

    Upper Driveshaft Bearing - Mercruiser Pre-Alpha 1.84

    I blew up the upper gears on a pre-Alpha 1.84 outdrive. I found a college kid who gave up on the restoration of a boat and bought a pre-Alpha outdrive from him that matches mine and also off a 470. I crossed my fingers and water pump didn't work, but seemed to run OK otherwise (470 is closed...
  7. emmurphy50

    Mercruiser 470 Solenoid

    Hi All, I had a problem on vacation with my solenoid on my 1981 Mercruiser 470, which I recently replaced, sticking on and off. A few times it would not start, and more than once it locked the starter on, and would not shut off with the key and kept the starter spinning, even with the key off...
  8. emmurphy50

    Merc '81 - 470 - Messed up throttle/shift settings while doing tune-up due to coil

    Hi all... I have a 81 Wellcraft 196 Sunhatch with a Merc 470, purchased mid-July, pre-Alpha outdrive. It was having the miss issue/bogging down at high RPMs that others seem to have. I did a full tune-up on it including wires, points, condenser, coil, cap, rotor - set timing to 4-5 BDC and...
  9. emmurphy50

    Mercruiser 460 Pressure Cap Fitting Replacement

    Simple question - anyone replace the actual brass insert (filler hole base) into the coolant reservoir elbow? Bought a new boat and the brass flange the cap twists on to was cracked, now failed, and leaks coolant. I was pleasantly surprised the brass insert (filler hole base) into the cast iron...
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