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  1. #1

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    Pump and spacer problem/repair?

    Recently scored a deal on a HO pump, coupler and cables. The spacer has a series of grooves just behind the wear ring wondering if it should be repaired, or replaced, if it would hinder performance. I've already started the blueprinting. All the castings filed out, just needs final smoothing. It happened to have a 14/20 dynafly already installed but has a few dents on the trailing edge. I will post pictures of the spacer grooves for opinions.
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  2. #2

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    Also which nozzle was better for top speed? I was thinking the 67x, but just making sure. The bottom of this one, 60T, was ground what I feel was a little too much for plate clearance. Tapered to the edge of the hole, seems bolt heads will hang too low.

  3. #3
    powerstroke specialist mikegp's Avatar
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    got one like new and one with the two pressure relief modes fitting attach to it. lmk what ski are you working on?

  4. #4

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    Quote Originally Posted by mikegp View Post
    got one like new and one with the two pressure relief modes fitting attach to it. lmk what ski are you working on?
    2000 GPR. Boring the cylinders to 1300 specs (Millenium Technologies). Carbureted/flame arrestors with cut stock head (Lowell). 05 HO pump blueprinted, 14/20 Dyna,(which nozzle?) R&d speed plate (cut), Riva trim tabs, Riva sponsons. Which nozzle is best 85-87mm? Could the grooves be filled with 5200 and be usable?

  5. #5
    powerstroke specialist mikegp's Avatar
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    85mm IMO . 5200 will blow away , there's lots of pressure going through . but if you want to triple check pm wfo , he will be able to get you going correctly.

  6. #6
    African-American
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    You need to use 3m 5400 for pump parts.

    Steel epoxy putty for pump grooves work and don't blow out.

    Exit nozzle 85mm bored to 86.8mm with the syphon and pisser removed

  7. #7

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    Quote Originally Posted by spaceman View Post
    You need to use 3m 5400 for pump parts.

    Steel epoxy putty for pump grooves work and don't blow out.

    Exit nozzle 85mm bored to 86.8mm with the syphon and pisser removed
    Would there be much difference between the 85mm bored to 86.8 versus the stock 87mm I already have? 0.2 of a millimeter seems trivial, but then again there are many secrets that seem trivial that have good result.

  8. #8
    Happily Self-Employed WFO's Avatar
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    run the 85mm with the HO pump

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