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  1. #1
    Join Date
    Aug 2015
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    Crossover

    I purchased a Hardin crossover for my 406 to go on 94 18 with ss outdrive. They said ss pump will do the job. A friend who has been a performance boat mechanic for years says he doesn't like crossovers they provide inconsistent consistant cooling. What do you guys think?

  2. #2
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    Sorry

    Inconsistent cooling!!!!!!!

  3. #3
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    Aug 2015
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    Sorry

    With bypass.

  4. #4
    Join Date
    Nov 2003
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    The Alpha/SS drive raw water pump doesn't have the capacity to operate effectively w/o a circ pump.
    You can do it by doing the following:
    Remove the pump impeller.
    Remove the hose between the drive and the gimbal.
    Block the water connection flange inside the gimbal/inside the hull.
    Add a Stainless Marine transom pickup.
    Add this crank driven raw water pump: http://www.marineexhaustmanifolds.co...ater-pumps.htm
    Plumb the transom pickup to the crank driven raw water pump through all your various coolers.
    This set up works very well, I've done it a number of times.
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

  5. #5
    Join Date
    Feb 2005
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    I agree with George that the Alpha won't supply enough water. I wouldn't eliminate it though I would use it for the oil coolers and dedicate the new pickup/crank pump for block cooling. Or even better plumb the Alpha pump to be a drive shower
    machinist ,bore it deeper,ream it bigger, and lap it to a fine finish



    https://www.facebook.com/photo.php?v...=2&theater

  6. #6
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    Aug 2015
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    Cost

    Is it worth it? That's $1000 in parts!!!

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