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  1. #1
    Vmax2003's Avatar
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    Need an engine for an 08 FXHO! What engines are interchangeable??

    Hey guys, new to the forum.. I recently picked up a ski cheap, with a blown engine.. Looking for a long block.. (Holes in case and busted head)

    Will the VX cruiser block work? IF so, does anyone have one for sale or know where to get one?
    I know SBT sells longblocks, but i dont want to spend 3Gs on a engine from a company i dont trust..

    THANKS!


  2. #2
    2008 FXHO is the FX160 engine (1052cc) which is the same displacement as a VX110 engine. The 140 is different.

    refer to this thread:
    http://www.pwctoday.com/showthread.php?t=438042

    The gist of the thread is, you can use the VX block with some changes. Can you salvage 3 out of 4 pistons and rods and the camshafts? If so, if you have a vx110 running long block you can make it happen with minimal ebay purchases (a rod and piston). I am going down this road at some point for my conversion GPR because I simply can not find a reasonably priced FXHO motor in central GA.

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  4. #3
    MR-1 X 2's Avatar
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    Quote Originally Posted by Vmax2003 View Post
    Hey guys, new to the forum.. I recently picked up a ski cheap, with a blown engine.. Looking for a long block.. (Holes in case and busted head)

    Will the VX cruiser block work? IF so, does anyone have one for sale or know where to get one?
    I know SBT sells longblocks, but i dont want to spend 3Gs on a engine from a company i dont trust..

    THANKS!
    I should have everything you need if you decide to build a HO engine from a VX Crankcase or core engine.

    PM me if you are interested.

    Thanks

    Scott

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  6. #4
    Vmax2003's Avatar
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    Okay cool. SO I have 3 rods and pistons that are OK. crank is toast. Will the external shit just bolt up to the VX block? and besides the cams, the heads are identical?

  7. #5
    Dude the link I posted goes into every single detail. There are a few mods to the block. Even if you have to sign up at.pwctoday to see the pics, its 100% worth your time.

  8. #6
    I have an 03 long block but if you del. the power valve basically same motor but different body ski.

  9. #7
    TimeBandit's Avatar
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    Personality I wouldn’t resurrect the MR1 HO motor. My “opinion” is that Yamaha pushed the MR1 platform just a tad too far with the 160HP output. If you want an MR1 that will last, you are better off with a 110HP MR1 (which were on the slower VX skis). Oh, and the SBT “clone” MR1’s (HO) were complete junk – went thru three in a row less than 10hrs each over a span of 6 month, all different failures – circlip on wrist pin, cam sprocket pulled off the exhaust cam, & the 3rd one had a failed crank bearing . . . fool me once I say. And yes I am a very very competent wrencher.

    That said, the title of your thread says “what engine are interchangeable” . . .
    Well, Yamaha pretty much retains the same engine mount to drive coupler offset geometry for all it’s 4-stroke engines (MR1, 1.8L, TR1) regardless of year/models - which means you can swap full motors between these hulls with minimal mods. That said, a different engine swap turns into more like a “hull-swap” if you look at it from that perspective. Example: in order to drop a 2012 1.8L VXR engine into my 2005 FXHO, I had to bring the full electrical harness/ecu, engine mounts & bumpers, the IB/mid-shaft, couplers, pump drive shaft, impeller & stator, waterbox/lock. So this was more like swapping hulls than engines.

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