Bowl Pressure tap locations
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Bowl Pressure tap locations

  1. #1
    Senior Member Widetrack's Avatar
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    Default Bowl Pressure tap locations

    For checking pressures on the intake where is the best locations to tap the holes? Pic.would help alot also! Thanks WT

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    check the shoemaker section, we had this discussion a couple weeks back over there. i've got 3 taps on my housing but i only use the rearmost. its at 9 oclock , 1 inch in frt of the wearing boss, as far behind the inducer as i could get safely. its reading the average across the face of the impellor pretty consistently, the gauge doesn't flucuate at all until it cavitates

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    Senior Member Widetrack's Avatar
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    Thanks Tom I will check that thread out! WT

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    Senior Member H20MOFO's Avatar
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    Default 10 and 2

    Here's mine still haven't plumbed it. you can still see all the drill shavings on my ride plate. lol Edit; I don't know what I'm smokin that ain't 10 and 2 lol
    Last edited by H20MOFO; 07-09-2008 at 02:29 PM.
    Another Hot Boat refugee

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by H20MOFO View Post
    Here's mine still haven't plumbed it. you can still see all the drill shavings on my ride plate. lol
    i've also got those taps, but since the inducer skews loader and shoe readings by that point, i settled in between them on the opposite side just to take an average of the 2.

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    Senior Member Widetrack's Avatar
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    But what I read that Greg was saying is 10 and 2. That would put them all on top would that not give you the loader pressure for the bottom of the impelor??? WT

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    jetboataholic HawaiianJet's Avatar
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    Question

    What's the point of running a fin, when there's no material there to actually do anything??? Seems kinda pointless to me!
    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  10. #8
    Senior Member H20MOFO's Avatar
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    The mini rudder dealio is also my bottom pin. It didn't look right to me because the droop isn't as thick as the stock piece,and now more of the pin is exposed. I e-mailed that picture to Tom JBP and he told me it looked like part of my rudder was missing?
    Another Hot Boat refugee

  11. #9
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by Widetrack View Post
    But what I read that Greg was saying is 10 and 2. That would put them all on top would that not give you the loader pressure for the bottom of the impelor??? WT
    directly quoting shoemaker's 1st post in the "pressure thread'

    "Being that I have never installed a tap in front of the inducer I would still try to tap behind the inducer."

    if you're looking at your pump from the inside and reallly start to burn your brain about what's happening at the inducer as the shoe pressure and loader pressure hit it and spin around, i really don't think anyone can come in here and claim that taking readings at 2 & 10 behind the inducer is gonna be accurate unless you pulled out the inducer, then tuned, then stuck the inducer back in. just sticking the inducer back will change soo much, how the hell could anyone say it was accurately reading shoe and loader anymore at 2 & 10 with a inducer? really wish someone could make sense of that for me, i'd really like a pro opinion on it but all i've gotten to date is vague opinions on the matter. i'm no hydroengineer, i just do what makes sense to me and hope it works,lol.
    Last edited by IMPATIENT 1; 07-09-2008 at 02:59 PM.

  12. #10
    jetboataholic HawaiianJet's Avatar
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    Exclamation

    Quote Originally Posted by H20MOFO View Post
    The mini rudder dealio is also my bottom pin. It didn't look right to me because the droop isn't as thick as the stock piece,and now more of the pin is exposed. I e-mailed that picture to Tom JBP and he told me it looked like part of my rudder was missing?
    Part of your rudder? Try the whole thing! Here's what it is supposed to look like. If the pin is too long, you could either get another one, make a new one, or cut the current one down. Hell, I have a pile of pins sitting on my bench, I could send one out to you if you really want. My diverter came with the short pin, so I took the long pin and rudder I had on my prehistoric PD, and put em' on my new PD. They are exactly the same, thanks PD for not changing the design very much over the years.


    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  13. #11
    Senior Member H20MOFO's Avatar
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    I think rudders are optional.
    Another Hot Boat refugee

  14. #12
    jetboataholic HawaiianJet's Avatar
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    Talking

    Quote Originally Posted by H20MOFO View Post
    I think rudders are optional.
    That's why they sell it as an "accessory" and you have to pay extra for it. But hell it can't really hurt the performance very much, can it?

    Good luck with the boat, looking good!

    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  15. #13
    Screamin SeaMonkees Schi-502's Avatar
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    Default Rudder vs no rudder

    I bought the boat in pict. #1 condition, then added the snoop and rudder. Boy that was an "E" ticket ride! Then I removed the rudder altogether. Works fine as is.
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  16. #14
    Senior Member OkieDave's Avatar
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    Default rudder

    I keep the rudder on my ski boat because I think it may help when the skier swings way out on the sides and tries to pull the boat sideways. I know it hurts speed but hell, who wants to ski 75 anyway?
    the ski boat is a condor vee bottom with a 557" BBF.

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