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  1. Raytard

    TBI 7.4 v belt converting to a Johnson/Jabsco crank pump

    Hi guys, I had plans this year to swap out the very restricted access mercruiser sea water pump to a crank mounted pump. I bought the Fb-6 Johnson pump or whatever, but I failed to realize that my crank pulley does not have the ever important locating dowels. I know if I just willy nilly it, the...
  2. Raytard

    Freshwater cooling coversion and 3" spacer block water flow passages

    Hi there, I am doing a raw water to FULL fresh water cooling conversion on a 7.4LX. I have seen in the Mercury bulletins that they recommend putting the block off gasket between the manifold and the spacer. And not between the spacer and elbow? I was hoping to put the block off gasket on top so...
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