hose psi
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hose psi

  1. #1
    Cole SS cole ss's Avatar
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    Default hose psi

    I am wanting to replumb my boat. What do most people use, 5/8 water heater hose? What PSI should I use. I have looked in forums,but couldn,t find any info.

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  3. #2
    LIQUID QUARTER MILE Pro Mod's Avatar
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    Default psi

    Any hose is fine 5-7lbs of pressure is all u will need
    I use 1/2 hose that is plenty
    HOT ROD BOATS
    ANGIER, NC

    pump & parts
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  4. #3
    Cole SS cole ss's Avatar
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    Would your standard 60lb water heater hose from O'reilly's work. How much pressure does a jet that turns 5200 build? I want to be safe with no problems

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    Quote Originally Posted by cole ss View Post
    Would your standard 60lb water heater hose from O'reilly's work. How much pressure does a jet that turns 5200 build? I want to be safe with no problems
    if you want to do it the right way you'll run all hard lines from the pump to a pressure regulator. the psi from the jet pump is really waaay too high for a normal engine. the exit of the pressure regulator can go to the exhaust or out of a dump out the back. after the pressure regulator you can run whatever heater hose you want, or braided hose would be the bulletproof way to go, but it gets expensive quickly.

  7. #5
    S&S
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    If you are talking about water in/out of motor and to headers, standard heater hose is fine. I run one 1/2" line off the pump and two 5/8" lines out of motor, 1/2" lines to headers. Not trying to open a can of worms, pressure shouldn't be over 25-30psi even when it spikes up. Mine runs around 10-15psi even at WOT.
    Last edited by S&S; 12-12-2011 at 04:56 PM.

  8. #6
    Senior Member bp298's Avatar
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    this is the stuff i use. Search Results for aeroquip socketless - SummitRacing.com

    i've seen up to 300psi via a data tap directly opposite the cooling water port. that pressure goes up and down with the level of power applied. i've never had any problem with socketless fittings or hose. you can use heaterhose if you wish. personally, if it's not covered up, it looks a lot cleaner without a bunch of hose clamps all over the place.

  9. #7
    AKA OhOneWS6 Last Mohican's Avatar
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    Is this log or header exhaust? I used heater hose for all cooling lines on both my boats. The logs do a more than adequate job of reducing the pressure if plumbed to them first. My intake pressure gauge read 0 PSI when I had the logs on my Rebel. Headers need to be plumbed a little differently to keep the pressure down in the engine block.

  10. #8
    Cole SS cole ss's Avatar
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    Quote Originally Posted by Last Mohican View Post
    Is this log or header exhaust? I used heater hose for all cooling lines on both my boats. The logs do a more than adequate job of reducing the pressure if plumbed to them first. My intake pressure gauge read 0 PSI when I had the logs on my Rebel. Headers need to be plumbed a little differently to keep the pressure down in the engine block.

    What I am running is a log exhaust. My lines start at my logs, exit to my block,out my intake, to my exhaust snails. Are you using standard 60lb PSI hose? Thanks.

  11. #9
    AKA OhOneWS6 Last Mohican's Avatar
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    Quote Originally Posted by cole ss View Post
    What I am running is a log exhaust. My lines start at my logs, exit to my block,out my intake, to my exhaust snails. Are you using standard 60lb PSI hose? Thanks.
    That is how mine is. That is how 90% of the boats I have seen with logs are done. I guess it is 60 PSI. I am using what ever you get when you go the the parts store and buy heater hose.

  12. #10
    tintingsandiego krusn56's Avatar
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    I used blue...Hard line from pump to valve. Chevy and olds should have water flow set but ford can be full flow to log/snail/engine.
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  13. #11
    Cole SS cole ss's Avatar
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    Looks great.

  14. #12
    Senior Member Josh@JBP's Avatar
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    We use and sell Shields Heavy Duty Marine Water hose, it rated to 200psi and doesnt cost much more than the Auto parts store heater hose. Also holds up much better to any oil that may end up in the bilge.

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