Results 1 to 6 of 6
  1. #1
    slydogge's Avatar
    Join Date
    Jul 2009
    Location
    Florida
    Posts
    306

    85mm pump housing or 87mm on 03 gpr1300?

    Hey guys I keep hearing two different stories? I thought the 87mm was no question better but now i hear 85mm is?


  2. #2
    WATER WOODY's Avatar
    Join Date
    Aug 2005
    Location
    Minden, Nevada, United States
    Posts
    10,664
    +1
    11
    Welcome to GH.

    Stock ski or modded?
    In most cases, the 85mm nozzle is faster, stock or DF prop with the HO pump. The 87mm will give you better holeshot and mid. In some cases, going from the 85 to the 87 will result in prop spin (cavatation) on holeshot, depending on mods, prop pitch etc....

    I mod my 87 nozzles to get the holeshot and same speeds (within .2 mph) as the 85, to get the best of both worlds.

    General rule is the 85mm nozzle is the choice for the best top speeds.

    The best advise for you is to do your own testing with both nozzles. If your 03' is stock, i would stick with the 85 but test them back to back, this way you can be your own judge.

  3. #3
    slydogge's Avatar
    Join Date
    Jul 2009
    Location
    Florida
    Posts
    306
    Hey thanks. The ski is basicly stock Its been redone with a hot rods crank and wiseco pistons. I did the D plate but thats it. I dont need more top speed really but I was going to do the new prop so I thought I'd go ahead and do the housing and nozzle as well. Thanks again.

  4. #4
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,801
    +1
    450
    Quote Originally Posted by slydogge View Post
    Hey guys I keep hearing two different stories? I thought the 87mm was no question better but now i hear 85mm is?
    87mm works best with the old style pump and concord impeller

  5. #5
    slydogge's Avatar
    Join Date
    Jul 2009
    Location
    Florida
    Posts
    306
    Thanks again for the help guys! The dealership I work at is a parts- unlimited dealer so I can get A deal on the solas props. I was thinking A 13/19 but Im new to the water I was raised on land so I dont know for sure what I really need!

  6. #6
    African-American
    Join Date
    Feb 2007
    Location
    Cape Town, South Africa
    Posts
    2,226
    +1
    88
    take the 85mm and bore it to 86.8mm.
    remove the visibility spout (grind on the inside and fill)
    remove the syphon (grind on the inside and fill)

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 2
    Last Post: 05-24-2013, 09:03 PM
  2. WTB ultra pump housing or magnum pump
    By provo in forum Kawasaki Classifieds
    Replies: 5
    Last Post: 03-07-2011, 03:24 PM
  3. WTB Pro Pump Housing or the SS sleeve insert
    By Dazz67 in forum Polaris Classifieds
    Replies: 2
    Last Post: 07-05-2008, 10:13 AM
  4. Lost Power on '03 GPR1300...HELP!
    By handybuilder in forum Yamaha PWC Performance (2-stroke)
    Replies: 12
    Last Post: 06-10-2007, 07:49 PM
  5. Concord or Dynafly on a 03 1300r pump?
    By Fandini in forum Yamaha PWC Performance (2-stroke)
    Replies: 7
    Last Post: 04-16-2006, 01:42 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
  •