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  1. #1

    1996 polaris slt780

    hi i am having some trouble with my skis i have two matching slt 780s and have loved them but i have lost compression in one of them and two of my pistons are marked up and one of them is messed up the pistons say 78a 0.50 on the top of them. I am having trouble finding pistons and what else do i need to fix it. Can anybody help me with my problem i would surely appreciate any advice or if you have any parts i would be interested in buying them. Thanks alot for any help


  2. #2
    I believe that they are .5 mm or .020 oversize, if the cylinders are damaged you will have to go to .030 or .040 oversize.

    WSM pistons have worked good for me, and they have top end kits that have pistons , and gasket set all in one box.
    Last edited by K447; 07-05-2011 at 10:22 PM. Reason: .5 mm oversize

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