Results 1 to 3 of 3
  1. #1

    port and polish on the gpr1200

    hi, port and polish my gpr engine... anybody did the same with there gpr? did it make a big difference in power??

  2. #2
    Join Date
    Oct 2006
    yes, it does make a difference but its the sort of thing you do last after the hull, pump and everything else in the motor is already done.

    once all other mods are done , typically you will gain 4mph + way better acceleration.

    down side is it will chew more fuel.

  3. #3
    thanks, its pain polishing the intake side... =(

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Are there any specs on port and polish for a 750 sxi cylinder???
    By bonanzaman in forum Kawasaki PWC Performance (2-stroke)
    Replies: 5
    Last Post: 12-02-2009, 08:42 PM
  2. Exhaust port polish , without porting?
    By chris1200 in forum Yamaha PWC Performance (2-stroke)
    Replies: 32
    Last Post: 08-15-2009, 11:33 AM
  3. gpr1200 port timing?
    By deereman in forum Yamaha PWC Performance (2-stroke)
    Replies: 5
    Last Post: 12-05-2008, 10:36 AM
  4. VE920 Bottom End - Port/Polish
    By 2weelz in forum Sea Doo Classifieds
    Replies: 1
    Last Post: 09-05-2008, 08:40 PM
  5. how to port and polish the engine?
    By andy95'slx780 in forum Polaris How To & FAQs
    Replies: 2
    Last Post: 06-10-2008, 11:41 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