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Thread: adjust cam chain on 85 big red?

  1. #1
    Join Date
    Nov 2005
    Location
    Nova Scotia Canada
    --
    26

    adjust cam chain on 85 big red?

    i have lots of noise in the top of the engine. sounds like the cam chain.
    a buddy told me i could tighten it up but he didn't know how.
    Could someone here tell me how to do it? if it infact can be done.
    Thanks
    Steve

  2. #2
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2006
    Location
    North Tonawanda, NY
    --
    343
    I thought that too, but I was wrong. The chain tensioner on those engines are stationary. I have 3 of them. I was going to try welding the face just a bit to put some more tension on it, but we'll see how that goes.
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  3. #3
    Join Date
    Nov 2005
    Location
    Nova Scotia Canada
    --
    26
    Sooo.. no one has adjusted these before? there must be some trick to it?

  4. #4
    Danold's Avatar
    Danold is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Nov 2007
    Location
    barnesville, Ohio
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    193
    They are self adjusting so once they are adjusted all the way out they should be replaced. Start by putting a new cam chain in there.

    My big red made same noise untill it put the exhaust valve through the piston because of a loose cam chain.
    85 200x
    85 Tri-z
    86 Bigred
    81 Rm60
    John Deere racing tractor

    Quote Originally Posted by wad
    sorry dude mine are all shitters lol

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