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  • #1

    Wiseco Overbore kit

    Hi All,
    I've just purchased a Wiseco K1196 74.5mm Piston kit which will give the old girl a capacity of 1196cc. It was cheaper to get this kit than get Yamaha items so I had to have it.
    Has anyone any experience of fitting this kit and what size carb jets did they end up fitting?
    Mike Farnworth
    XS1100 E & XS1100 Sport Project
    Tags: None
  • #2
    How much was it and what was in it? Pistons and cyls, ???

    Thanks for the info!

    LP
    If it doesn't have an engine, it's not a sport, it's only a game.
    (stole that one from I-dont-know-who)

    Comment

    • #3
      Big Bore kit and carb jets.

      Hey there Mike,
      I put the 1179 kit in mine, an 81SH, running Indy filters, and old 4-1 pipes, floats are around 20-21mm height, had stock 110 mains, went to 117.5 and have good color on plugs.

      The big bore kit will give you more compression, mine measures at 180psi, = 12.25 : 1 ratio, so I run 93 octane instead of regular.

      If you are running stock breather and pipes, you may not need to re-jet at all!?!?

      Strom, the kits usually come with pistons, wrist pins, wrist pin keepers, rings, head gasket. No cylinders, but you can get them if you need them. Maximum stock overbore is 72.5mm, so with these pistons, you are thinning your sleeves a bit more, but unless you had catastrophic damage to your stock ones, you should be able to use them and not get the extra sleeves. HTH!?
      T. C. Gresham
      81SH "Godzilla" . . .1179cc super-rat.
      79SF "The Teacher" . . .basket case!
      History shows again and again,
      How nature points out the folly of men!

      Comment

      • #4
        I've just had stainless 4 - 2 system fitted and the mixture was still ok after fitting it and I'm still using the original air box.
        (I forgot to say that my bike is based on the F model)

        The compression pressures were all around the 120psi mark the last time that I measured them.

        Strom, the kit cost £205 ($300?) in a clearance sale at a local shop and Topcat is right about what's supplied with the kit.
        Mike Farnworth
        XS1100 E & XS1100 Sport Project

        Comment

        • #5
          Gotta get me one of those while they're still avaliable.
          When I get the bike to run and all...

          LP
          If it doesn't have an engine, it's not a sport, it's only a game.
          (stole that one from I-dont-know-who)

          Comment

          • #6
            Mike,,,does this clearance mean they are all gone?? Maybe alittle cross atlantic exchange is possible here. I have not found any place to get them this side of the atlantic yet anyway,,thanks for any info,,,,
            Ken Krieger
            Chesterfield, Va.
            81 XS1100SH - Radar Rider
            82 XJ1100J - Black and Blue
            82 XJ1100J - Bucket o Bolts
            79 XS1100SF - Road Raider
            1980 XS1100 - Frankenbike
            85 XJ700 Maxim
            06 VMax - Black Max
            85 650 Nighthawk

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            • #7
              I think they may have all gone but the link to the site is
              http://www.debben.co.uk/cheap.html

              It may be worth getting in touch with them to see if they have anymore.
              Mike Farnworth
              XS1100 E & XS1100 Sport Project

              Comment

              • #8
                as of a week ago wiseco still listed them in the PDF file available from there website--a little over 400$ if i remeber right
                79ish suzuki rm250
                82 honda cb450sc
                78 honda cx500
                72 honda cb175
                78 yamaha xs11e

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