nozzel insert info need schooling
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nozzel insert info need schooling

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    Senior Member yardsale_03's Avatar
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    Default nozzel insert info need schooling

    i was wondering how u find out what nozzel insert is right for your boat set up

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    testing

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    Jet boat service
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    Most folks start with a 3.125 and go from there. If you pull the incert out you will have 3.250,( stock nozzle size) so you can see what the difference does for your set up. Jim

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    Senior Member bp298's Avatar
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    Quote Originally Posted by yardsale_03 View Post
    i was wondering how u find out what nozzel insert is right for your boat set up
    testing. but knowing hp, pump, and general idea of boat weight, you can get a little closer to the ballpark. generally speaking, a 3.125 is a bit large for most lake stuff, but it's way better than a stock nozzle with nothing in it...

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    Senior Member 67weiman's Avatar
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    Quote Originally Posted by bp298:1612901
    generally speaking, a 3.125 is a bit large for most lake stuff, but it's way better than a stock nozzle with nothing in it...
    So now you got me thinking. Is there a minimum power required before you see any improvement?

    I am in the neighborhood of 500hp. Shoe, ride plate, top loader, inducer and stuffer already installed and I've seen 75 on the Gps. Still playing with getting my hardware set up to the sweet spot.

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    Senior Member yardsale_03's Avatar
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    will a insert make more mph

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    Senior Member yardsale_03's Avatar
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    thanks for the info keep it coming tryinh to get my daytona some mor speed

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    Quote Originally Posted by yardsale_03 View Post
    will a insert make more mph
    smaller should give a better holeshot while larger more top end. We are talking small differences though. If you really want more top end get more hp, and play with different shoes, loaders and ride plate angles. Does your keel have a bubble? When I bought my Daytona it went 75mph and now does 110 with a single carb BBC
    Last edited by Master Sergeant; 04-12-2012 at 12:28 PM.

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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by johnray069 View Post
    testing
    Most certainly.

    GPS or radar gun if you're not at the track.... from fastest to the slowest the most mph I found one weekend was 1.75 mph on the radar gun.


    I have no idea which made the boat quicker (I wasn't into to charts and graphs back then)

    Testing with some sort of way to measure it GPS or radar gun not the seat of your pants. It's not a bad idea to have an intake psi gauge either.


    S CP
    Last edited by Sleeper CP; 04-12-2012 at 12:29 PM.

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    Senior Member Widetrack's Avatar
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    Most of the time for larger boats the largest is best! On smaller boats the 3.0625 and the 3.125 seem to work well! It all depends on setup and power! If you make your own rings be sure not to go to small or you will loose all the way around!


    SOMEONE SAID YOU CAN'T TAKE IT WITH YOU! SO,IM BURNING IT UP ONE GALLON AT A TIME!
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    Senior Member bp298's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    Most certainly.

    GPS or radar gun if you're not at the track.... from fastest to the slowest the most mph I found one weekend was 1.75 mph on the radar gun.


    I have no idea which made the boat quicker (I wasn't into to charts and graphs back then)

    Testing with some sort of way to measure it GPS or radar gun not the seat of your pants. It's not a bad idea to have an intake psi gauge either.

    S CP
    if you tested on a track, you wouldn't need any gps or charts and graphs

    Quote Originally Posted by yardsale_03 View Post
    thanks for the info keep it coming tryinh to get my daytona some mor speed
    you still haven't said anything about your boat, other than it's a daytona. 19'? power? pump????? also, where are you located and what water conditions do you run in?

    first things first. the force created by the jet is a product of mass times velocity. mass as in pounds mass per hour (lbm/hr), velocity in feet per second/per second squared (ft-sec/ft-sec2).
    given a static hp, and that hardware is set up properly to keep the pump loaded, changing the diameter of the nozzle affects the balance between mass flowrate and velocity. i.e., make the diameter larger, mass flow rate slightly increases and velocity decreases. make the diameter smaller, mass flow rate slightly decreases and velocity increases. the "idea" then, is to determine the diameter that provides the optimum mass flow rate and velocity combination for a given boat.

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    Senior Member Ahsumtoy's Avatar
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    Quote Originally Posted by bp298 View Post
    if you tested on a track, you wouldn't need any gps or charts and graphs



    you still haven't said anything about your boat, other than it's a daytona. 19'? power? pump????? also, where are you located and what water conditions do you run in?

    first things first. the force created by the jet is a product of mass times velocity. mass as in pounds mass per hour (lbm/hr), velocity in feet per second/per second squared (ft-sec/ft-sec2).
    given a static hp, and that hardware is set up properly to keep the pump loaded, changing the diameter of the nozzle affects the balance between mass flowrate and velocity. i.e., make the diameter larger, mass flow rate slightly increases and velocity decreases. make the diameter smaller, mass flow rate slightly decreases and velocity increases. the "idea" then, is to determine the diameter that provides the optimum mass flow rate and velocity combination for a given boat.
    Bob, I'm gonna be up there full time in two weeks. You and I are going to do a lot of testing. I'll bring the boat, you do everything else.
    Steve

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    Senior Member bp298's Avatar
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    Quote Originally Posted by Ahsumtoy View Post
    Bob, I'm gonna be up there full time in two weeks. You and I are going to do a lot of testing. I'll bring the boat, you do everything else.
    Steve
    steve, i thought you went over to the dark side???. i should be doing some testing very soon. either next week or the week after. 4/21 is the boat show. i'm supposed to take the thing over for that, so may not test until after the show. scott and tom like castle rock for testing, so may be going there. goal is to make the race may 5/6. can't wait...

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    Senior Member yardsale_03's Avatar
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    Quote Originally Posted by bp298 View Post
    if you tested on a track, you wouldn't need any gps or charts and graphs



    you still haven't said anything about your boat, other than it's a daytona. 19'? power? pump????? also, where are you located and what water conditions do you run in?

    first things first. the force created by the jet is a product of mass times velocity. mass as in pounds mass per hour (lbm/hr), velocity in feet per second/per second squared (ft-sec/ft-sec2).
    given a static hp, and that hardware is set up properly to keep the pump loaded, changing the diameter of the nozzle affects the balance between mass flowrate and velocity. i.e., make the diameter larger, mass flow rate slightly increases and velocity decreases. make the diameter smaller, mass flow rate slightly decreases and velocity increases. the "idea" then, is to determine the diameter that provides the optimum mass flow rate and velocity combination for a given boat.

    i have a b inpeller / rideplat / droop / 2* weg /7 vane aggreser bowl / diverter / not to sure on the
    shoe angle or cut the boat is set up pretty good it will run 80 plus im just trying to do some fine tuning thanks for the info guys

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