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Help ZXR 250R Cylinder Head

Discussion in 'Kawasaki 250cc In-line 4's' started by Tonino, Mar 30, 2021.

  1. Tonino

    Tonino Active Member Premium Member

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    hey guys I am in the process of removing the cyclinder head off the ZXR and I am stuck because I have removed the cams etc etc and all the studs from the head as well as the camchain tensionner
    But the head will not lift off. The LHS is free and can be lifted a bit but the Cam chain side will not. Is there a hidden bolt that is not visible or listed in the workshop manual ? Th cam chain is free , so I do not know where the problem lies. Any ideas?
     
  2. gregt

    gregt Well-Known Member Premium Member

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    Camchain tensioner out completely ? Is there a bolt inside the tunnel revealed when the tensioner is out ?
    Camchain guide at the front out ? Likewise is there a bolt inside on that side ?

    Kawasaki like hiding bolts inside the tunnel. Common on several models. Often 8mm heads.
     
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  3. kiffsta

    kiffsta Administrator Staff Member Contributing Member Dirty Wheel Club

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    Internal bolt where the cam chain runs

    5B656FDA-7AC4-4469-B804-974EE5C457BC.jpeg
     
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  4. Tonino

    Tonino Active Member Premium Member

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    Thanks bud yep found the short stud in the chain well on the side down where the head joins the barrels.
    Got the head off and note that it has several issue like barrel scoring and some piston damage too. . So needs a rebore to maybe 0’5 or 1.0 so piston
    hunt is on . I guess an impossible task.
    thanks again
     
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  5. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Try Aliexpress (China). They are quite ok for a standard engine.
     
  6. Tonino

    Tonino Active Member Premium Member

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    Ok thanks. Do you know if C model pistons fit an A model?
     
  7. Tonino

    Tonino Active Member Premium Member

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    Yeah finally spotted it. Cheers
     

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