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Topic Review (Newest First)

  • 04-27-2013, 06:16 PM
    jetboatperformance
    We made these in small quantities for a while, a lot of work and kind of spendy but they worked well


  • 04-27-2013, 05:51 PM
    stuntgwis
    I want to bring this thread back to life. Does anybody have pictures of how they did the conversion? Mig or Tig welded? I have a bowl sitting around so it's worth a shot
  • 10-17-2008, 11:53 PM
    Shaun
    Quote Originally Posted by HawaiianJet View Post
    Back to the original topic.

    Ok, I'm serious about this now. I've got an extra bowl laying around that I'm gonna convert. Was looking at it today and noticed that the nozzle area is badly worn. So I'm gonna hack it off and weld a flange on it. It will be much cheaper for me to do it this way cause I can make the ring for $0 and I can cut the bowl for $0 and I can weld it back together for $0........you get the picture. If I knew the measurements, I'd be cutting on it right now, that's how serious I am about this. And I found a nozzle adapter for a G bowl on eBay and just placed a bid on it.

    First, I need to know how far down to cut, measured from the big side. Then any other measurements I might need.

    After looking at it tonight, I determined that I should probably cut it 9" up from the big end. That is exactly where the vanes stop. Can someone please verify this for me. Also can I please get a pic looking down at the small end of a converted bowl?

    Thanks.

    I'm going to go off what i saw at MPD. The bowl conversion is more than just hacking off the end of the bowl, drilling and taping it. From what i saw, it looks like they hacked off the nozzle end right where the vains stopped, then they carfully hacked around the outside of the bowl right where it gets to the small nozzle part but not cuting the vanes, my guess here is that they probably put it on a layth and cut away that area? It then looked like they had like a 2" long ring that fit over the vanes that are now sticking out and then weld it to the bowl and vanes.

    This is my guess, when i was at MPD i saw a bowl sitting on the floor, it was cut right up to where the bowl starts to fatten up, with 2-3" of vanes sticking out. Then there was that 2-3" long ring sitting ontop of it (not welded yet). The bowl looked like it was in the works to me.
  • 10-17-2008, 08:53 PM
    Devilman
    Quote Originally Posted by hotrod56cars View Post
    I think you're splitting hairs in comparing a converted JC to a JG or even a newer AT, etc., etc... I would think for the average non-race jet boat the differences would be minimal.

    Now we just need an informed person to tell me why I'm wrong.

    Little while back when on the search for a split bowl so I could run a droop, I looked into the conversion deal. HBJet had one done & put me in contact with the man that did his, Jack at MPD. I called & spoke with him, very nice guy, & what he told me was that for my average lakeboat/recreational application I'd never know the difference from one split bowl to another. Said if I was mainly looking to just be able to try/run a droop, wedges, etc. any of them would suit me fine. Tom (IMPATIENT1) put me onto a G, which is what I'm running now....

    As far as the conversion process, I don't recall exactly how they do it. Pretty sure I still have some pics that Randy (HBJet) sent me, but they're on my work computer. I do remember MPD wasn't doing the conversions at the time I called.... I'll try & check my work computer over the weekend & see if I still have the pics. If so, I will post 'em or email 'em if anybody wants to see them.
  • 10-17-2008, 07:57 PM
    HawaiianJet
    Quote Originally Posted by djmadmatt View Post
    Low Horsepower? Come one man ... Mine is somewhere between 125 and 210 Horsey's ... hahahahahah
    Well if I can believe the old charts, that have the lower rpms on it, mine is somewhere around 250 hp. But I think I'm putting out a little more than that. I'm turning an AB to 4400 rpm, and that lines up exactly with the 250 hp mark, on this chart. It's those damn truck heads.

  • 10-17-2008, 07:28 PM
    djmadmatt
    Quote Originally Posted by HawaiianJet View Post
    I'm just trying to figure out which bowl would give me the most thrust with my low horsepower, low rpm engine. And having the ability to add and remove hardware, like a split bowl, would be nice too. I need all the help I can get with my small motor. I'm just glad the boat came with an impeller that works well on low rpm engines.

    Thanks.

    Low Horsepower? Come one man ... Mine is somewhere between 125 and 210 Horsey's ... hahahahahah
  • 10-17-2008, 06:26 PM
    HawaiianJet
    Back to the original topic.

    Ok, I'm serious about this now. I've got an extra bowl laying around that I'm gonna convert. Was looking at it today and noticed that the nozzle area is badly worn. So I'm gonna hack it off and weld a flange on it. It will be much cheaper for me to do it this way cause I can make the ring for $0 and I can cut the bowl for $0 and I can weld it back together for $0........you get the picture. If I knew the measurements, I'd be cutting on it right now, that's how serious I am about this. And I found a nozzle adapter for a G bowl on eBay and just placed a bid on it.

    First, I need to know how far down to cut, measured from the big side. Then any other measurements I might need.

    After looking at it tonight, I determined that I should probably cut it 9" up from the big end. That is exactly where the vanes stop. Can someone please verify this for me. Also can I please get a pic looking down at the small end of a converted bowl?

    Thanks.
  • 07-09-2008, 09:46 PM
    JohnnyNitrous
    It's an HJ special!!!
  • 07-08-2008, 11:12 PM
    HawaiianJet
    Quote Originally Posted by IMPATIENT 1 View Post
    it'd help if you showed the entire rear of the impellor in a pic there should be something stapmed back there
    Here ya go!!!!








    Personally, I think it's a Berk, based on the H stamped back there. But, what do I know.

    Here's what started all of this impeller stuff.
    Impellers!

  • 07-08-2008, 11:02 PM
    IMPATIENT 1
    Quote Originally Posted by HawaiianJet View Post
    Yep, but I don't know who, or even what brand impeller it is. I was told it's not a Berk., that it's a dominator. But, I always thought that the Doms had the second wear ring on the back side, which this one does not. And it doesn't look like one was machined off, so I'm clueless.

    Thanks.

    it'd help if you showed the entire rear of the impellor in a pic there should be something stapmed back there
  • 07-08-2008, 10:57 PM
    IMPATIENT 1
    Quote Originally Posted by H20MOFO View Post
    I'm sure I'll get corrected if I'm wayyy off here... Aren't some pumps(dominators at's) more suited to higher HP and say a berk maybe a little lower. And if you bolt a 500 hp motor to a pump that was designed/tuned for an 900 HP motor, it would make less mph than with a pump designed/set up for a 500 hp motor?? And visa versa?
    the at and doms are just thicker and have the reinforcement ribs along the sides, nothing wrong with using them in a lower hp boat, just means you can add more hp in the future without worryin about upgrading that part. the dominator housings are great for those newbie jetters that think its cool to jump the boat alot,lol. i've got buddy's that have been thru 6-7 housings each cause they like to show out and crack the weaker berk housings.
  • 07-08-2008, 10:51 PM
    H20MOFO
    I'm sure I'll get corrected if I'm wayyy off here... Aren't some pumps(dominators at's) more suited to higher HP and say a berk maybe a little lower. And if you bolt a 500 hp motor to a pump that was designed/tuned for an 900 HP motor, it would make less mph than with a pump designed/set up for a 500 hp motor?? And visa versa?
  • 07-08-2008, 10:40 PM
    HawaiianJet
    Quote Originally Posted by Shaun View Post
    There was alot of talk about this on hotboat, i had my bowl converted by MPD. Think it ran me 400 bucks and he only does certain times of the year when he's not busy. Go onto hotboat and do a search.
    Well, I was hoping that since most of the good people from Hot Boat are over here, that we could get that info over here. And increase the amount of information over here, so I don't have to support HB by going over there, but I guess I'll have to now.



    Quote Originally Posted by IMPATIENT 1 View Post
    somebody's detailed that impellor, looks nice.
    Yep, but I don't know who, or even what brand impeller it is. I was told it's not a Berk., that it's a dominator. But, I always thought that the Doms had the second wear ring on the back side, which this one does not. And it doesn't look like one was machined off, so I'm clueless.

    Thanks.

  • 07-08-2008, 10:37 PM
    IMPATIENT 1
    Quote Originally Posted by HawaiianJet View Post
    My impeller looks like this (see images below), it is an aluminum AB cut of an unknown (to me) make, it started out as an A2 based on the stamping on the back. It came with the pump when it was sent off to be rebuilt (before I bought the boat) and blueprinted. It also has a bronze shouldered wear ring that came with the impeller (I guess) from whoever rebuilt the pump the first time. (I tore the pump down and rebuilt it when I got it, but it had only been run a couple times before the boat was sold, I just replaced the gaskets and speed coated all the interior surfaces of the pump) Is that a race prepped impeller? Cause I really have no idea.





    somebody's detailed that impellor, looks nice.
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