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  1. #11
    RaiderMagic's Avatar
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    "Time for a gprxp conversion"
    Never. Lol. My buddy has one. It's a great ski but I'm not diving in that deep.


    R1
    Thx! Ive never heard of them.
    I did contact Millenium today though. Their exchange is actually cheaper than their repair costs. $214
    & they offer ProX pistons. So $435 for a exchange Nikasil cylinder & 2x proX pistons.

    That's roughly the same as the SBT top end kit, but better parts.

    Wavedude, I meant SBT, not WSM top end kit. WSM offers a 1200 top end kit, but not for the 66E.

    Hey, maybe I dont even need a crank. One can be hopeful right, lol. I still have to pull the bottom end out & disassemble. I'd like to not have to spend $600+ for a crank. If thats the case, then Im approaching or possibly exceeding the SBT crate costs... and that's my dilemma. You end up with a non yamaha crank(which didnt seem to be so great anyhow, thats what blew up at 70hrs). and good pistons, OE cylinders & good gaskets, doing all the work & still have no warranty on anything.
    Last edited by RaiderMagic; 09-17-2015 at 10:22 PM.

  2. #12
    RaiderMagic's Avatar
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    Im not sure if you guys were able to view my video linked in the 1st post?, but you can see the rod washer#7 (at the crank) is what failed. *(or possibly the rod bearing 1st) #8, then the washer got destroyed.
    http://www.partzilla.com/parts/searc...TON/parts.html

    FWIK there isnt an upgrade to #7. If a titanium piece could be machined, do you think this would be an upgrade? or just not worth it as the crank would essentially need to be reassembled.
    Just has me scratching my head because this is a 70hr motor that wasnt beat on. I could understand if I used crap oil & drag raced it all the time or had 300+hrs but it wasnt.


    Also, pretty close to me in Long Island is PWC Engines.
    http://www.pwcengine.com/products/Ya...lt-Engine.html

    You hear the bad more than good about everyone. Their engines are cheaper than SBT & I'd save $200 in shipping. Anyone have any 'solid' info on their product? Pretty much $500 less


    Photo Reference for "washers" #7 on rod/crank.

  3. #13
    bikermikeyblack's Avatar
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    I have a freind that has installed pwc engines and has only good things to say about them & they sleeved one for me and you can call and talk to them and that means a lot to me


  4. #14
    MSX 150 guy lives on Mr. GP1800's Avatar
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    I dont think the thrust washers generally die on their own. The lower rod bearing probably gave out. I think rust is the biggest killer of cranks. Chances are you may have had a little rust in the bearing.

    Synthetic oils are great lubricants but arent the best when it comes to rust protection. Thats the reason i switched to a high quality non synthetic oil. I use Legend ZX2R.

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  6. #15
    powerstroke specialist mikegp's Avatar
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    you keep mentioning 70 hours crank failure , but keep in mind its a 10+ year old engine , who knows how long did it seat at someones back yard. if you're that close to pwc , then go with them , in reality they are both rebuild engines that by no means are close to factory specs , thay are mass produce using cheap parts to keep low operating cost .

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  8. #16
    RaiderMagic's Avatar
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    I bought the ski from the original owner, it was a garage kept, ski. Obviously it could have rusted or something, but seems great for 35hrs. I mostly use Royal Purple HPS synthetic, but have used Penzoil Semi as well. I mixed 40:1 & always ran 89octane Valvitec marine fuel. Now, I have been told to run 32:1 on a PV engine. The manual says WOT is 30:1. However, a lot of posts say you can go as thin as 50:1 is using a quality oil. I woundnt ever do that.

    Im going to give PWC a call today, see whats up.

    FLMike, how do you know they are WSM, complete?


    ...hopefully this weekend I have a chance to pull the bottom end out. The season is ending & I feel like Ive wrenched more than ridden this season. Still close to 100hrs but last season was 170~

  9. #17
    RaiderMagic's Avatar
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    Just spoke to Mike @ PWC engines. apparently he is/was an engineer or something for WSM (which is also local here on Long Island).
    I can have my motor rebuilt(which I prefer vs exchange) and drop it off to save shipping. I like the idea of it being local & he seems like a pretty straight forward dude. It's like $700 less than SBT(after shipping) and has the same warranty & what seems to be better parts. Also, w/o shipping, it's a much faster ordeal.

  10. #18
    bikermikeyblack's Avatar
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    Pwc engines in manorville NY is NOT WSM

  11. #19
    SBT cranks OK. WSM pistons & rings are better than SBT pistons & rings.

  12. #20
    RaiderMagic's Avatar
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    Quote Originally Posted by bikermikeyblack View Post
    Pwc engines in manorville NY is NOT WSM
    I never said where either of them were?
    But (PWC Engines) in Manorville & WSM is in Bohemia are both here on Long Island and clearly separate companies. The owner of PWC works for WSM.
    Last edited by RaiderMagic; 09-22-2015 at 11:01 AM.

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