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Thread: Hw30& 50 pistons

  1. #1
    Join Date
    Jun 2001
    Location
    Dunstable
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    10,391

    Question Hw30& 50 pistons

    Just thinking to myself are the hw30 & 50 pistons 25mm if so are they too short to fit in one of my sleeved cylinders as I'm not really happy with using the ground down top sears (lgv piston fitted)
    them there springer's are soooooo addictive

  2. #2
    Join Date
    May 2016
    Location
    Glenrothes
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    1,352
    HW30, older 50, 55 and of course 77 25mm piston diameter. Not sure if piston length would be suitable for what you needed them for though.

  3. #3
    Join Date
    Feb 2011
    Location
    Dorset
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    2,871
    You can reduce a Hw77/97 piston down from 26mm to 25mm as it's only .5mm off the OD

    Was you planning on using this 25mm piston in a sleeved down Hw80 ?
    Hw77+7

  4. #4
    Join Date
    Jun 2001
    Location
    Dunstable
    Posts
    10,391
    Quote Originally Posted by HW55T View Post
    You can reduce a Hw77/97 piston down from 26mm to 25mm as it's only .5mm off the OD

    Was you planning on using this 25mm piston in a sleeved down Hw80 ?

    I was hoping to give it a try ....the piston face will need a little machining too as the seal dimensions are slightly different
    them there springer's are soooooo addictive

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