Results 1 to 2 of 2
  1. #1

    Big Bore molydenum performance pistons(forged)?

    I found some snowmobile pistons and I know that my ski is water cooled.These pistons are molydenum coated skirts like the kind I would use on my streetrod engines and have a small dome.I just wanted to know the difference between the 2 cycle pistons for water cooled and air I guess.I thought some sled engines were also water cooled (closed system).These come in 72mm which is what I want and I am no stranger to machine work for more power as far as shaving heads,gasket thickness and big bore jobs.These pistons also have the same pin size.Please advise.

  2. #2
    Join Date
    Jul 2007
    Cedar Rapids,Iowa
    The polaris MSX 140 uses the same pistons used in the polaris liquid cooled 800 snowmobiles.And they also have coated skirts.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 4-Stroke R&D Performance 1.9L Big Bore Engine Build
    By jetpilot785 in forum Yamaha Projects & Build Threads
    Replies: 131
    Last Post: 08-24-2012, 12:09 PM
  2. FS - Parts Yamaha 66v 1390cc 87mm Big Bore Pistons- Wiseco- $300 Shipped
    By nightrider05 in forum Yamaha Classifieds
    Replies: 8
    Last Post: 08-14-2012, 07:30 PM
  3. crankshaft holder and the coupler wrench really need it for big bore piston?
    By Teerayoot in forum Yamaha PWC Performance (4-stroke)
    Replies: 0
    Last Post: 10-21-2010, 11:38 AM
  4. Big Bore Pistons Over 88mm
    By #.0 in forum Yamaha PWC Performance (2-stroke)
    Replies: 17
    Last Post: 04-10-2009, 06:14 AM
  5. big bore pistons
    By billy's gpr in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 10-11-2007, 11:29 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