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Thread: Is this Right?

  1. #1

    Is this Right?

    I have learned a lot from this forum and greatly appreciate that..and am in the process of replacing the rear cylinder because of an oil line pop off on my 2002 XLT 1200. I went to the dealership and they ordered me a piston/cylinder kit. He assured me it would be right however I know that in reading this forum there are like 4 different sizes of pistons. Well I wanna know if I have the right piston/cylinder. The Numbers do not match up and IMO I think they should....that is unless the parts have been updated or something since 2002. Anyhow here are the pictures of what I am talking about.

    This picture is off of the two cylinders that are #1 &#2 that are still in the ski. Notice the numbers on the lower right just above the powervalves. They say 12.
    Click image for larger version. 

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    Ok this is the New cylinder on the left that says #18 and the old on the right that says #12.
    Click image for larger version. 

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    This is the same New and Old cylinder but only from the side with the stampings on the side. The new one says Y-4 and the Old says Y-3.
    Click image for larger version. 

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    I assume that the new one is NOT correct, but still would like to hear it from more gurus on here with knowledge. I am SOOO pissed at my dealer because i was wanting to get it up and running and riding it today and now I have to wait another frikn week and half. Let me know what you all think. TIA.

  2. #2
    powerstroke specialist mikegp's Avatar
    Join Date
    Mar 2011
    it does not matter what number is on the old cylinder compare to the new one, unless you are going to reused the will need to get a new piston matching the new cylinder number,that will solve your problem.
    so the key is to get a matching piston for the new cylinder.base on the number stamped (18 )

  3. #3
    They(Piston/Cylinder) came in a matching set together, both matching. So then it will work fine?

    I just wondered if all 3 cylinders have to be the same so that the crank is not pulling a "heavier" piston down on one end and then two lighter ones. I dont know if that matters or not. I mean its only a couple thousands difference but still, does it matter???.

    I want to get a matching cylinder/piston before i put it all together and run it if I needs to be matched.

  4. #4
    powerstroke specialist mikegp's Avatar
    Join Date
    Mar 2011
    you be fine. the number is just for the piston.. you don't need the same number on the cylinder .

  5. #5
    perfect....thanks a it buttoned up here except for the last clamps and hoses on exhaust....will run it sometime this week i hope.

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