Results 1 to 8 of 8

Thread: piston pics

  1. 06-02-2008, 01:21 PM #1
    gp8r
    gp8r is offline
    Join Date
    Jan 2008
    Posts
    37

    piston pics

    Hi,

    What do you think about these pistons? rich/lean??

    these are from a twin carb GP800R

    Front piston is the darker of the two and the lighter one is the rear.

    Thanks
    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: IMG00085.jpg  Views: 42  Size: 26.3 KB  ID: 75645   Click image for larger version.  Name: IMG00087.jpg  Views: 42  Size: 31.2 KB  ID: 75646  
    Reply With Quote Reply With Quote

  2. 06-02-2008, 01:29 PM #2
    WFO
    WFO is offline
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,890
    +1
    468
    1st is a little, 2nd is just right
    Reply With Quote Reply With Quote
  3. 06-02-2008, 01:55 PM #3
    gp8r
    gp8r is offline
    Join Date
    Jan 2008
    Posts
    37
    a little lean?

    would you say safe to run or richen one eighth/quarter
    Reply With Quote Reply With Quote
  4. 06-02-2008, 02:43 PM #4
    WFO
    WFO is offline
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,890
    +1
    468
    Open that screw up a bit
    Reply With Quote Reply With Quote
  5. 06-02-2008, 04:33 PM #5
    gp8r
    gp8r is offline
    Join Date
    Jan 2008
    Posts
    37
    thanks....i take it you mean the high speed screw
    Reply With Quote Reply With Quote
  6. 06-02-2008, 05:14 PM #6
    WFO
    WFO is offline
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,890
    +1
    468
    Quote Originally Posted by gp8r View Post
    thanks....i take it you mean the high speed screw
    yup
    Reply With Quote Reply With Quote
  7. 06-02-2008, 10:01 PM #7
    DrewNJ
    DrewNJ is offline
    Moderator DrewNJ's Avatar
    Join Date
    Dec 2005
    Location
    Marlton, NJ
    Posts
    3,716
    +1
    1
    I'd take the highs all the way in first and count how many turns your currently at. If opening them up any more takes you over 2 turns out then it's rejet time...

    Is this a stock ski?
    Reply With Quote Reply With Quote
  8. 06-02-2008, 10:48 PM #8
    wavedude
    wavedude is offline
    Join Date
    Jul 2007
    Posts
    134
    +1
    1
    gp8r, didn't you have a head gasket problem causing low compression on that cylinder? If so, you can not determine the fuel mixture from piston wash on that piston until it has been running correctly. How many turns out on the high speed needle are you on the PTO piston?
    Reply With Quote Reply With Quote
« Dealer 10 hour check list for GPR??? | Need more fresh air? »

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Piston pics
    By TMiller in forum Kawasaki Open Discussion
    Replies: 5
    Last Post: 01-12-2016, 12:27 AM
  2. Any idea what happened to this piston ?? pics inside.
    By chevydog in forum Yamaha PWC Performance (2-stroke)
    Replies: 8
    Last Post: 05-24-2012, 04:06 PM
  3. What caused the damage to my piston? Pics Inside
    By geoffw in forum Sea Doo Sport Boats
    Replies: 3
    Last Post: 08-11-2011, 01:05 PM
  4. Cylinder head and piston pics
    By monaroman76 in forum 4-Tec Performance
    Replies: 18
    Last Post: 12-28-2010, 03:57 PM
  5. Pics of my coated pistons
    By xlint89 in forum Polaris PWC Performance
    Replies: 29
    Last Post: 03-05-2009, 09:32 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
  •  

Forum Rules