Page 1 of 2 1 2 LastLast
Results 1 to 10 of 16
  1. #1

    Join Date
    Apr 2006
    Location
    panama city beach 'fl
    Posts
    1,846
    +1
    9

    gpr pipe difference

    just now had the chance to look at a 2003-07 pipe side by side could there be some xtra power there?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	PA170035.JPG 
Views:	76 
Size:	59.4 KB 
ID:	99613  


  2. #2
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
    Posts
    16,066
    +1
    23
    hmmm......I never noticed that before. Or heard of it mentioned. On that 90degree elbow portion that is

  3. #3
    Mike's GPR's Avatar
    Join Date
    Mar 2008
    Location
    Carol Stream, IL
    Posts
    2,044
    +1
    20
    Me neither, Maybe because one it tuned for PV's and the is tuned for Non PV's???

  4. #4
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
    Posts
    16,066
    +1
    23
    Quote Originally Posted by Mike's GPR View Post
    Me neither, Maybe because one it tuned for PV's and the is tuned for Non PV's???
    ah ha ! thats it...yup...which is which in the picture as for year model? now the question is, to do a back to back swap on the water and test

    now....the 2004 XLT1200 had a silver pipe 66v motor too, 1200 cc.....I wonder how it compares , or if it is the same as the 200313R pipe

  5. #5
    Mike's GPR's Avatar
    Join Date
    Mar 2008
    Location
    Carol Stream, IL
    Posts
    2,044
    +1
    20
    The bigger one on the left is for the Non PV motors.

  6. #6
    Chrisrokc's Avatar
    Join Date
    Apr 2006
    Location
    Oklahoma City, OK
    Posts
    3,667
    try them back to back! I wanna know how much power is gained or lost.

  7. #7
    African-American
    Join Date
    Feb 2007
    Location
    Cape Town, South Africa
    Posts
    2,226
    +1
    88
    rumour is 10hp gain on the newer pipes (this is r&d's rumour)

  8. #8

    Join Date
    Apr 2006
    Location
    panama city beach 'fl
    Posts
    1,846
    +1
    9

    Cool

    i'll get will guy who own's it and flip them soon

    later cd

  9. #9

    Join Date
    Aug 2006
    Location
    Indiana
    Posts
    1,274
    +1
    81
    Which begs a question? We up size the D-Plate opening for 1390 engines, and when I had mine apart recently, I noticed at the converter end of the above pictured pipe, the pipe tapers into the outlet, I think that is the stinger? Well, that opening, or narrow section, is actually less in area than the d-plate, so would there be advantage to opening the inner diameter up a bit for big bore engines? I think it is 2.650" if I remember right, and I opened mine up a bit. My 1390 has really picked up the power in the mid and upper range, however Its not broken in enough to confirm peak speed changes.
    Anyone else consider this?

  10. #10
    3 x 1800 feeding my obsession sconti stellari's Avatar
    Join Date
    Apr 2007
    Location
    Tampa, Florida
    Posts
    516
    also should compare pv motor and non pv motor engines
    I am sure there will be a trade off
    pv motor with non pv exhaust will net more low end and less top.
    not sure, just thinking out loud and curious of results good luck!

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Gp vs gpr pump differences.
    By quinton in forum Yamaha PWC Performance (2-stroke)
    Replies: 1
    Last Post: 08-05-2016, 03:30 PM
  2. Replies: 1
    Last Post: 06-11-2015, 12:41 PM
  3. 97.5 GSXL pipe differences
    By wickedpony2007 in forum 2-Stroke Performance
    Replies: 2
    Last Post: 08-15-2009, 07:16 AM
  4. Is Factory Pipe still replacing GPR pipes?
    By OutlawGPR in forum Yamaha PWC Performance (2-stroke)
    Replies: 6
    Last Post: 06-14-2009, 10:58 PM
  5. GPR PIPES and HULL SOLD However?Best GPR Tech.
    By chrisd in forum Yamaha Classifieds
    Replies: 5
    Last Post: 08-05-2008, 11:08 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
  •