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  1. M

    Water Pump Torque Spec Clarification - Alpha One

    What is the correct torque specs for the nuts and screws that secure the water pump cover. Referencing the service manual pages 3B-8 and 3B-52 and there is conflicting information. And, speaking of screws, reference the parts explosion, is part 36 really necessary? Thanks for the help!
  2. M

    Water Pump Help - 1984 Alpha

    Some History – I have been fighting a high RPM overheat issue with my 1984 5.7L, Alpha drive set up in my sea ray. With the great help and suggestions from this forum’s users, the cause has been narrowed down to air ingestion. I have replaced the ¾” pain in the a** hose and now to the water...
  3. M

    Alpha 1 Trim Sender and Limit Switch Replacement Help

    Greetings! So while fighting a high RPM overheat issue I discovered a U-joint bellow leak. Stupic or lucky, I just dont know. I decided to do the whole transom seal / repair process including shift cable. During disassembly, I noticed that the trim limit and tilt sender wires were toast so...
  4. M

    5.7 Mercruiser Overheat at High RPM

    Greetings, Members! There are several posts regarding this topic, but wanted to do a refresh and ask for everyone’s help – I am at a loss at the moment. Equipment: 1984 Sea Ray Monaco (purchased from the original owner in 1990); Mercruiser 5.7, serial number 6732604 – with Alpha I outdrive. Raw...
  5. M

    5.7 Mercuiser - Voltage Drop During Acceleration

    Greetings! Need help with my 1986 5.7 Mercruiser / Sea Ray 22? Monaco. At idle, with no accessories on, blower, etc, the voltage at the battery is 12.8 volts. Applying power, (accelerating), the voltage at the battery and panel gage, drops and stays at 11.8 volts. I had the (Mando AR-150)...
  6. M

    4.3L Mercuiser Water in Cylinders

    1997 4.3L Mercruiser (carbureted) installed in a 19? Bryant. Freshwater only. Replaced engine this spring due to damage to the starter mounting flange on block caused by hydrolock. Certified local Merc dealer installed a new engine which now has 20 hours on it and, up to this point, has run...
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