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  • Raw water pumps

    I'm converting to fresh water cooling with a fresh engine and want to know what you all use for your raw water pump.
    the new engine is a rebuilt 283ci chevy. I looked at a lot of pumps on line but it seems a company has several pump numbers for the same application.
    I'm confused.
    1978 Glasply 21ft 5.7l Mercruiser R drive "Sandi's Surprise"
    1981 Glasply 17ft 70hp Johnson & 9.8hp Nissan kicker "Skunked"

  • #2
    I use Johnson crank driven pumps. They make two versions, one is for V6 and 350 engines (Johnson F5B-9) and the other is for the high HP 350 & 454 versions (Johnson F6B-9). You would be OK with the V6/350 ones, I use the 454 versions for a higher quantity of water thru my heat exchanger. Reasonable price ($135-160) and they work very well.
    "Joint Venture" 1978 midcabin 28', twin 2017 Vortec roller cam "bullet proof" 383/6.3L full roller 350hp engines - You name it, I've either replaced it, restored it, rebuilt it, repainted it or repaired it. That's my job now that I'm retired.

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    • #3
      Thanks for the info. The Johnson one I found is JP10-24915. I also saw other numbers for the 350 and v6 engines thus my confusion.
      Is Jabsco made out of unobtianium?
      1978 Glasply 21ft 5.7l Mercruiser R drive "Sandi's Surprise"
      1981 Glasply 17ft 70hp Johnson & 9.8hp Nissan kicker "Skunked"

      Comment


      • #4
        Originally posted by skunked View Post
        Thanks for the info. The Johnson one I found is JP10-24915. I also saw other numbers for the 350 and v6 engines thus my confusion.
        Is Jabsco made out of unobtianium?
        JP10-24915 is the same pump as Johnson F6B-9. Jabsco is overpriced and no better then a Johnson F6B-9.
        "Joint Venture" 1978 midcabin 28', twin 2017 Vortec roller cam "bullet proof" 383/6.3L full roller 350hp engines - You name it, I've either replaced it, restored it, rebuilt it, repainted it or repaired it. That's my job now that I'm retired.

        Comment


        • #5
          Thanks for clearing that up for me. Johnson it is.
          1978 Glasply 21ft 5.7l Mercruiser R drive "Sandi's Surprise"
          1981 Glasply 17ft 70hp Johnson & 9.8hp Nissan kicker "Skunked"

          Comment

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