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  1. #1
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    Removed vst need fuel pump.

    Need to figure out my options for high pressure fuel pump. I would like to mount it in the fuel tank and will have to return fuel to tank from regulator bypass. If mounted in tank that would mean not using the other and the pulse fuel pump. What pump would you run ? Would like to hear all suggestions.

  2. #2
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    it is generally considered a bad idea to run high pressure feed and fuel return to and from an outboard. the hidden fuel lines and the amount of flexing needed make for a possibly dangerous condition.

  3. #3
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    Quote Originally Posted by derekfl View Post
    it is generally considered a bad idea to run high pressure feed and fuel return to and from an outboard. the hidden fuel lines and the amount of flexing needed make for a possibly dangerous condition.
    JAN.... don't know how ta break this to ya but thats tha way practically all high performance stuff works.. ie: 245 BP's, 260's, 280's, S 3000 etc.........

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  5. #4
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    r.c.

    check out tha clean way this promax is done............ big pump is close to tha tank.....

    225 ProMax 15" mid, CLE 3 hole (screamandfly.com)

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  7. #5
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    I always like a Weldon at the tank, not in the tank, and had no delivery issues at all.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  8. #6
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    All good stuff! The promax set up looks good and with the exterior pump i can retain both fuel cells. I was thinking the in tank pump would last longer because it would run cooler but the exterior is definitely a better way. With the return hard pipe in the tank i was thinking of expanding the pipe size to drop the pressure running it horizontal before angling it to the bottom. My concerns are airating the fuel, introducing oxygen in the fuel. Most of the h.p. pumps are large volume= large return.Thanks for all your help.

  9. #7
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    I just removed my vst. I used the internal fuel pump from the vst system and ran a Bosch regulator. It's considered a 260 system and simple setup. We still need to secure the regulator and clean a few things up.

    Click image for larger version. 

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    Last edited by Baker343; 09-17-2023 at 12:18 PM.

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  11. #8
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    Thanks for all the info. I have never had a problem with the vst or components not functioning properly, mainly wanted to be able to tweek the fuel pressure. It will be a plus when the rebuild happens. All i am seeing so far are high volume pumps, so much more than i need.

  12. #9
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    Click image for larger version. 

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ID:	524626 this is the pump ive used several times great results

    Quote Originally Posted by r.c. View Post
    Thanks for all the info. I have never had a problem with the vst or components not functioning properly, mainly wanted to be able to tweek the fuel pressure. It will be a plus when the rebuild happens. All i am seeing so far are high volume pumps, so much more than i need.

    2001 american offshore 26 twin 300 promaxs
    2006 hydrostream comp vking horned 225 promax/
    1979 hydrostream vector sold
    1986 23ft twin engine eliminator twin 225 promaxs SOLD

  13. #10
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    Having an adjustable regulator with gauge really helps fine tuning it

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