Results 1 to 7 of 7
  1. #1

    Unhappy Yamaha gp1200 1999 ,, oil hose fell off!! *&^%^%$$##

    Well my gp1200 npv lost an oil hose will jumping waves and died.
    I got back to shore but ,,one piston is toast and others lost 10 lbs in each.
    Shissel! anyway i found that oil hoses were way to short and tight!
    did anybody have this happen to them?
    only 120 hrs on ski.
    so I'm looking for a piston kit==which one???
    sbt looks great but cant find out if there forged?
    what kind of pistons should i use ,,oem yams are usually my choice but with so many on the market i'm ??
    I ride my ski to the max!! jumping all the time!!
    all or any insight and specs would be great for my future purchase.

  2. #2

    Join Date
    Aug 2009
    LI, NY
    Premix and pro x pistons are what I use in my machine shop.

  3. #3
    Nothing like getting air, while sitting in a chair VonnerNIX's Avatar
    Join Date
    Jul 2010
    St. Louis, MO
    Same thing happened to be, except I bought it seized. I used Pro-X pistons.

    Also, go ahead and get a pre-mix kit. It is worth not going through that again.

  4. #4
    are pro ex pistons forged???

  5. #5
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Madison, WI, USA
    no. The Wisco's are forged though. What are your intentions for this build? I used ProX

  6. #6
    well I push the ski to the max all the time but it will be close to stock.
    but it is one of my personal ski,s ,,, not one of my rebuilds for clients that want to save money or get ski going for summer acivities.

  7. #7
    krispaintballz's Avatar
    Join Date
    Sep 2007
    Kenosha, WI
    Go pro x.

    I run wiseco but for your application go prox.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Yamaha gp1200 1999 leapfroging through moderate wave ?
    By craneman in forum Yamaha PWC Performance (2-stroke)
    Replies: 4
    Last Post: 08-21-2011, 07:59 PM
  2. 1999 gp1200 yamaha
    By nemolisa in forum Yamaha Old School Skis
    Replies: 7
    Last Post: 09-13-2010, 09:58 PM
  3. 1999 Yamaha GP1200 porpoising mods to help
    By gregsgp1200 in forum Yamaha Old School Skis
    Replies: 2
    Last Post: 08-28-2010, 05:26 PM
  4. 1999 GP1200 ran without oil, oil injection was diconnected
    By gregsgp1200 in forum Yamaha Open Discussion
    Replies: 10
    Last Post: 08-18-2010, 05:52 PM
  5. 1999 Yamaha GP1200 FTP SS pictures??
    By pilo704 in forum Yamaha Old School Skis
    Replies: 0
    Last Post: 10-24-2008, 02:57 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