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  1. #1
    Member Snow Guy's Avatar
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    Oct 2013
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    Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    MY current 670 engine blew up, but i found a 670 engine out of a 91 ski doo, it should bole in to my 99 ski doo right?
    1999 Summit X 670
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  2. #2
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    slededjr's Avatar
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    Nov 2011
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    Will have to use the mount plate from the 99. Use all electronics from the 91.

  3. #3
    Member
    tukernater's Avatar
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    Motor will sit pretty high being a Rotary valve if it's a S or ZX chassis.
    Last edited by tukernater; February 27th, 2015 at 12:48 AM.

  4. #4
    Senior Member
    overkill131313's Avatar
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    I don't think it will sit any higher than his original blown up 670....lol
    Quote Originally Posted by tukernater View Post
    Motor will sit pretty high being a Rotary valve if it's a S or ZX chassis.
    CREE LED Light bars 4-sale Cheap!
    ZX triple 163 mod, 98 summit 670, Snowcoach. GMC ext cab 4x4 454 with Alum custom flat deck plus trailer, 08 650 AC 4x4

    real men ride their sleds.....others just shoot their mouth off about how great their wedge is!!

    I'm benched no wife beatting here......and that is "PRICELESS"

    I Cdnuolt blveiee taht I cluod aulaclty uesdnatnrd waht I was rdanieg. The phaonmneal pweor of the hmuan mnid, aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it dseno't mtaetr in waht oerdr the ltteres in a wrod are, the olny iproamtnt tihng is taht the frsit and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it whotuit a pboerlm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Azanmig huh? yaeh and I awlyas tghuhot slpeling was ipmorantt!.
    ..

  5. #5
    Member
    tukernater's Avatar
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    Quote Originally Posted by overkill131313 View Post
    I don't think it will sit any higher than his original blown up 670....lol
    Ya I didn't read it right (sober) Lol

  6. #6
    Member
    0neoldfart's Avatar
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    Did ski-doo make a 670 in 91? I believe it was a 617 at the time - might want to double check displacement / mounts, etc.
    "You can't fix stupid" - Ron White
    “Put your purse down” - unknown

  7. #7
    Senior Member
    overkill131313's Avatar
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    yes first year of the 670 I think was 93 in the mach 1 series....an 95 in the summit.....

  8. #8
    Member RMPERK's Avatar
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    Jul 2015
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    Edmonton
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    Re: Will a 91 670 engine bolt in to a 99 ski doo summit chassis?

    did you find your hood?



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