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Thread: piston wsm

  1. #1

    piston wsm

    I rebuilt the engine on my rxp 215 hp and I mounted wsm pistons are good pistons or broken immediately

  2. #2

  3. #3
    Dave Sharp dav_dman's Avatar
    Join Date
    Aug 2005
    louisville Ky/so. IN
    probably you should ask before you mounted. Does it really matter at this point?

  4. #4
    I have a lot of BAD feed-back for this piston in 2 stroke, but for 4 stroke, i don't know.....

  5. #5
    Work Harder, Millions on Wellfare Depend On Us! ultramaxracing05's Avatar
    Join Date
    Aug 2009
    Beaumont, Texas
    I have to say I had good experiences on 2 skis using WSM Platinum. yeah they will fail if you're running a coffman pipe, or pushing that engine to the limits with the WSM pistons.
    I rec ride with them and never had a problem.

    Maybe his fault with the pistons was the clearance or improper installation, for them to break that fast you know there was something wrong with the installation.

  6. #6
    SLASHER's Avatar
    Join Date
    Jun 2007
    Australia, Perth WA
    I have run the WSM`pistons ...

    They will hit you oil sprayers as they hit bottom dead .You need to modify them ...If not the piston will strike them out ..

    I have learnt my lesson ..

    Now using the new PRO-X pistons ....No problems

  7. #7
    I installed the pistons wsm on my rxp with 215 hp, rotax racing ecu, injectors 42 ,x charger , solas 14/19r filter riva, I go to 8550 rpm, I had 30 hours and is highly desirable

  8. #8
    you say that the pistons riva are best?

  9. #9
    Banned User
    Join Date
    Aug 2009
    Discovery Bay, CA
    Quote Originally Posted by gacimar View Post
    you say that the pistons riva are best?
    lots of good feedback from them so far...

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