Results 1 to 10 of 10
  1. #1
    God of the Wave spyder3000gtvr4's Avatar
    Join Date
    Sep 2006
    Location
    long island
    Posts
    369

    98 gp800 impeller selection for max speed

    im new here so if this post is in the wrong section i apologize. my 98 gp800 sucked up a pair of freakin pliers and now it only does 40mph i researched the ski and found i have a 144mm housing i was planning on upgrading to a 155mm like my gp1200has, but what impeller would i use with the larger housing a 14/20 swirl a 13/19 slim line a 16/23 swirl. id like to get the most top end mph out of her. other then an r&d ride plate she is 100% stock. im also considering a r&d top loader intake. any suggestions, idea's input would be greatly appreciated. also ill buy your grate if you have one!


  2. #2
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    question????Do you feel your 800 can use the bigger pump effectively?
    That is alot of load for a twin,ESPECIALLY at holeshot...
    IMT, a twin wont repond well to this change .. I'd stay with the 144 and go with a XO or XJ...

  3. #3
    r33pwrd's Avatar
    Join Date
    Mar 2006
    Location
    Sammamish Washington
    Posts
    4,216
    +1
    360
    I think he is correct its not worth the extras $$$ i have a stock vein section from a 04 1300 that I think would work just fine (would have to do a little research) also do the ppk (pump plug kit) and a r&d 800 grate and get that plate modded! My friends 800r got 3.1 mph from a modded plate!!!!!!!!!! That a lot of speed for not much $$$$

  4. #4
    jgustman's Avatar
    Join Date
    Apr 2006
    Location
    Cottonwood, Mn
    Posts
    133
    +1
    5
    I used to have a 99 gp800 the best mod I ever did was put a riva intake grate and a solas concord 14/18 pitched to a 14/19 and set back by impros. Impros website has a description of the gains in the "application specific mods area in the impeller section. There is a "no bull" noticible increase in acceleration and no cavitation like the original impeller, and hooked up on chop was unbelievable compared to stock. Gained a solid 1.5 mph...Ran just under 60 gps. Go with riva limited rideplate also, I don't know if there is a difference between the riva and r&d plate. Get an intake grate for sure....

  5. #5
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    the top loader's will slow you down up top... its best for chop ,not max mph.... go with the R&D or RIVA 2 bar grate's with out the loader.
    Last edited by w/rpm500; 09-09-2006 at 01:47 PM.

  6. #6
    Gforce's Avatar
    Join Date
    May 2005
    Location
    Long Island, NY
    Posts
    405
    If I were you I'd start by putting a steering nozzel back on that thing


    Welcome to the forum Jon!!

  7. #7
    God of the Wave spyder3000gtvr4's Avatar
    Join Date
    Sep 2006
    Location
    long island
    Posts
    369
    thanks for all your help guys im going to call up impro and find out about the impeller. can i push my old ring out or do i need a complete housing im also going ot order the riva intake.

    hey nick how is it everytime i go out with you i do all the cool stuff like 20ft jumps and ride dead end trails and in the end it always you pulling my rope?

    iim going to put my trd celica supercharger on my 800 and beat your big ugly stupid ski you'll see i may do 40mph now and cant turn! but i will win
    Last edited by spyder3000gtvr4; 09-09-2006 at 05:22 PM.

  8. #8
    Gforce's Avatar
    Join Date
    May 2005
    Location
    Long Island, NY
    Posts
    405
    I think you mean it always ends up in me pulling your Ski with a rope not me pulling your rope!!


    Thats just what your ski needs a nice TuRD to make it twice as fast

  9. #9
    God of the Wave spyder3000gtvr4's Avatar
    Join Date
    Sep 2006
    Location
    long island
    Posts
    369
    no no no i meant you pulling my rope, land sea whatever always you pulling it. thats it my lil 800 is going to go 73.4 you will see, anybody have a gp1300r engine for sale?

  10. #10
    Gforce's Avatar
    Join Date
    May 2005
    Location
    Long Island, NY
    Posts
    405
    Love the sig....


    Post in the clasifieds section if your looking for a new motor...

    What are you gonna do put it in the celica

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Please help with impeller selection for our project
    By toplevel in forum Sea Doo Build Threads
    Replies: 11
    Last Post: 03-20-2013, 11:40 AM
  2. Impeller selection for the nasty 15f
    By smokeysevin in forum Kawasaki PWC Performance (4-stroke)
    Replies: 105
    Last Post: 11-23-2012, 08:59 PM
  3. Where do you set your VTS when looking for max speed?
    By Tturbonegro in forum Open Discussion
    Replies: 7
    Last Post: 07-13-2011, 07:54 AM
  4. Impeller selection for altitude, hole-shot
    By Guy on the water in forum 4-Tec Performance
    Replies: 3
    Last Post: 04-11-2010, 10:34 PM
  5. Prop pitches for max speed and performance
    By 2fast4u in forum Yamaha PWC Performance (2-stroke)
    Replies: 5
    Last Post: 11-05-2006, 01:48 PM

Posting Permissions

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