Results 1 to 4 of 4
  1. #1
    johnsonmtz's Avatar
    Join Date
    Oct 2006
    Location
    Mt. Zion Illinois
    Posts
    1,250
    +1
    7

    5131092 impeller on a 750?

    I acquired a pile of parts from a neighbor (including the '93 SL hull) and found a Polaris 5131092 impeller. I didn't see that impeller part# in the manual I have, so I did a search and found Keddano talking about this number being a progressive 8X20 impeller. From what I gathered it should pull like a monster out of the hole with the shallow 8 pitch but will take a good bit of HP to pull the top end with the 20 pitch.

    My '94SLT750 is going to be my mod machine. I already have the TDR water box and plan to soon install the PSI dry pipe (with necessary jetting changes). I also have reed spacers and stuffers that I'm going to install while I have the carbs removed. Ocean Pro Vortex F/A's are already on so it's breathing as well as it can.

    So, my question is will those be enough changes for the 750 to pull that -092 impeller? I also have a 5131079 impeller, which was stock for the SL hulls and should be slightly taller than the -035 I have on the ski now. I thought I would try the -079 first after the pipe install hoping it will put my top RPM where it needs to be. But if it doesn't I'm curious if the -092 will do the trick.

    Lemme hear your opinions.

    KJ


  2. #2
    casey67's Avatar
    Join Date
    Sep 2006
    Location
    Lemont,IL
    Posts
    2,571
    +1
    35
    The HP-1 "kit" # 2871286, available for the 900's (suggested 95-110hp) consisted of the 5131092 impeller and instruction sheet

    It's recommended to use a "low" pitch or familiar impeller,when tuning carbs for mods ( to remove that variable from tuning)
    After it's tuned properly -try impellers

  3. #3
    johnsonmtz's Avatar
    Join Date
    Oct 2006
    Location
    Mt. Zion Illinois
    Posts
    1,250
    +1
    7
    Quote Originally Posted by casey67 View Post
    The HP-1 "kit" # 2871286, available for the 900's (suggested 95-110hp) consisted of the 5131092 impeller and instruction sheet

    It's recommended to use a "low" pitch or familiar impeller,when tuning carbs for mods ( to remove that variable from tuning)
    After it's tuned properly -try impellers
    Aha, that helps to know the recommended HP range for that prop. Thanks for the info Casey. I guess the big unknown is if my suggested upgrades will bring my little 'ol 750 near the acceptable HP requirement for that prop.

    I figured to start with the PSI dry pipe and stock impeller to see if I hit the rev limiter. If I do hit the limit I was going to install the -079 SL prop. Then, if I'm still on the top end of RPM I was going to try the -092. I recall XLint89 stating he saw documentation from PSI claiming a 6HP gain with the dry pipe. I'm thinking with the pipe and the other mods it might push in the realm of 10HP to 12HP. I'm not sure that's really going to be enough grunt to turn that prop on the top end, but we'll see.

    KJ

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    http://www.greenhulk.net/forums/show...&highlight=psi

    http://www.greenhulk.net/forums/show...&highlight=psi

    http://www.greenhulk.net/forums/show...&highlight=psi



    They do recommend going up 1 pitch with the dry pipe. BUT, I would run the 079 and see where you're at.

    The 079 is roughly a 13/18 pitch with the 035 being closer to a 12/17

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Impellers On E Bay
    By LANCE in forum Polaris Open Discussion
    Replies: 32
    Last Post: 01-31-2007, 02:10 PM
  2. Nice Impeller On E-Bay
    By beerdart in forum Polaris Open Discussion
    Replies: 21
    Last Post: 12-29-2006, 08:21 PM
  3. Replies: 11
    Last Post: 11-04-2006, 03:41 PM
  4. RR Impeller on 185HP
    By somefun in forum 4-Tec Performance
    Replies: 3
    Last Post: 05-23-2006, 10:41 AM
  5. What gains switching to a Vortex Impeller on my RXT?
    By scooby-rxp-doo in forum 4-Tec Performance
    Replies: 14
    Last Post: 02-17-2006, 03:03 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •