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    450 exc piston

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    steve

    Posts : 4233
    Join date : 2010-01-26

    450 exc piston

    Post by steve on Thu Nov 24, 2016 7:22 pm

    On ams website there 2 listed anyone know witch on?
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    mizzed

    Posts : 3083
    Join date : 2015-05-04
    Age : 38
    Location : Tafarnaubach

    Re: 450 exc piston

    Post by mizzed on Thu Nov 24, 2016 7:28 pm

    1 is standard size,
    2 is 0.05mm bigger

    Trevor Pope recommended using the 2 to me.

    its stamped on the back of the barrel either 1 or 2 if you want to match it exactly.

    I've got the 2 in mine on a 1 barrel and its fine.


    Last edited by mizzed on Thu Nov 24, 2016 7:29 pm; edited 1 time in total
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    JTM525

    Posts : 2817
    Join date : 2014-01-19
    Age : 36

    Re: 450 exc piston

    Post by JTM525 on Thu Nov 24, 2016 7:29 pm

    steve wrote:On ams website there 2 listed anyone know witch on?
    The most expensive one Laughing
    What's the options?
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    dai 530

    Posts : 587
    Join date : 2012-07-01

    Re: 450 exc piston

    Post by dai 530 on Thu Nov 24, 2016 7:29 pm

    It depends on what size cylinder is fitted on the bike it's probably a 1
    I usually put a no 1 back in on the 1st piston change and a no 2 on the nxt one 
    The only real way is to measure the bore 
    I think on the rear of the cam chain tensioner housing the cylinder size would be stamped on there
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    steve

    Posts : 4233
    Join date : 2010-01-26

    Re: 450 exc piston

    Post by steve on Thu Nov 24, 2016 7:36 pm

    260 hours what you think 1 or 2 ?
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    mizzed

    Posts : 3083
    Join date : 2015-05-04
    Age : 38
    Location : Tafarnaubach

    Re: 450 exc piston

    Post by mizzed on Thu Nov 24, 2016 7:57 pm

    1
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    mizzed

    Posts : 3083
    Join date : 2015-05-04
    Age : 38
    Location : Tafarnaubach

    Re: 450 exc piston

    Post by mizzed on Thu Nov 24, 2016 7:57 pm

    mines got at least 600+ hours on it i reakon
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    dai 530

    Posts : 587
    Join date : 2012-07-01

    Re: 450 exc piston

    Post by dai 530 on Thu Nov 24, 2016 8:05 pm

    I put a one in mine at about 250 hrs but probably could get a.way with a no 2 just check to see  what size cylinders on there 1st
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    steve

    Posts : 4233
    Join date : 2010-01-26

    Re: 450 exc piston

    Post by steve on Thu Nov 24, 2016 8:13 pm

    Can you change the cam chain without splitting the bottom end?
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    dai 530

    Posts : 587
    Join date : 2012-07-01

    Re: 450 exc piston

    Post by dai 530 on Thu Nov 24, 2016 8:50 pm

    Yes Steve you might have to pull the flywheel off you will need a flywheel puller I think it's a 27×1mm

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