Page 1 of 2 1 2 LastLast
Results 1 to 10 of 14
  1. #1
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55

    Not enough ring side clearance. GP1200

    So I bought .5mm oversized ProX piston kits. They came with Rik rings. It seems like my rings don't have enough side clearance in piston grooves.
    I noticed that if I push the rings in the grooves just right, they kinda stick. Thats why I broke out the feeler gauge and checked.
    The spec is .001" to .003". Now, I might be jumping the gun here because my smallest feeler is .0015". I'll see if I can find/borrow a .001" feeler from a friend.
    But what do you guys think I should do here??



    Ring out, feeler slides in ok.




    Sort of looks like it goes in but I had to force it there and it only went in a tiny bit. All 3 pistons/all 6 rings are like this.

    Thanks for any help


  2. #2
    Moderator OsideBill's Avatar
    Join Date
    Mar 2006
    Location
    United States
    Posts
    11,875
    +1
    30
    I think you should see what the ring gap is first and run it, and are Pro-X clearances the same as OEM?

  3. #3
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55
    Quote Originally Posted by OsideBill View Post
    and are Pro-X clearances the same as OEM?
    Excellent question. I assumed this clearance was the same but I'm not sure.

    The ring end gap measured out at .014" to .015" on these rings, which seems fine.

  4. #4
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55
    eh...I'm going for it. Cylinders are on and torqued down.

  5. #5

    Join Date
    Aug 2009
    Location
    LI, NY
    Posts
    344
    +1
    3
    Take and sand rings on a piece of glass to get required side clearance.

  6. #6
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55
    Thats a good idea!

  7. #7

    Join Date
    Aug 2009
    Location
    LI, NY
    Posts
    344
    +1
    3
    Quote Originally Posted by Cutlass View Post
    Thats a good idea!
    Been building engines for thirty plus years, once in awhile I get a good idea, LOL

  8. #8
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55
    Now I have to decide if I wanna take the cylinders back off and actually do this

  9. #9

    Join Date
    Aug 2009
    Location
    LI, NY
    Posts
    344
    +1
    3
    Quote Originally Posted by Cutlass View Post
    Now I have to decide if I wanna take the cylinders back off and actually do this
    Do it right or you might have to take it apart if it doesn't work!

  10. #10
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Location
    Madison, WI, USA
    Posts
    2,500
    +1
    55
    What grit sand paper should I use?

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. not enough speed in light chop
    By johnson7454 in forum Yamaha Old School Skis
    Replies: 4
    Last Post: 07-06-2008, 08:44 PM
  2. To ring or not to ring, that is the question?
    By chevyll in forum Yamaha How To & FAQs
    Replies: 2
    Last Post: 04-30-2008, 11:04 PM
  3. Not enough volts, no spark
    By 1996SLTX in forum Polaris Open Discussion
    Replies: 5
    Last Post: 08-01-2007, 06:49 PM
  4. wr 500 not enough fuel
    By electricgeoff in forum Yamaha Open Discussion
    Replies: 0
    Last Post: 06-16-2007, 10:21 PM
  5. 500 HP not enough?
    By somefun in forum 4-Tec Performance
    Replies: 14
    Last Post: 05-30-2006, 07:56 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
  •