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Help Cam chain links

Discussion in 'Maintenance' started by Wozza, Aug 24, 2018.

  1. Wozza

    Wozza Active Member

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    Hi
    Im looking for a cam chain for my GB250 and have cross referenced it to a xr350 cam chain.The one Ive found online is saying its 108 link chain..mine is 54 links..Am I right to assume that as its a double row chain that the 108 links is just the 2 rows of 54 ?.....
    Thanks

    Tip for the day dont buy a (old) gray import that has a no corresponding local model ;)
     
  2. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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  3. Wozza

    Wozza Active Member

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    Last edited: Aug 24, 2018
  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    It's strange there isn't a replacement listed for the original GB250 timing chain, eg obsolete replaced by **********
     
  5. Wozza

    Wozza Active Member

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  6. Murdo

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

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    Isn, t the xl/xr 250 the same engine and therefor the same chain?
     
  7. Wozza

    Wozza Active Member

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    I have no idea...the GB was based on the XR350 bottom end with a twin cam topend...The xl had different bottom end but the xr250 was based on the 350..maybe a shorter stroke?...Im just chasing obsolete part alternatives to get my baby back on the road...The gods must really hate me, what a super day today was for going for a ride..:(
     
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  8. Wozza

    Wozza Active Member

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    XR350 chain arrived today..looks pretty much the same as the orig chain...Was a waste of $$ though as the orig chain was only a tad longer....Bugga!...Oh well was down in that area stripping the oil pump and lines anyways.....
     
  9. Murdo

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

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    Doesn't take much stretch for a chain to rattle. I suggest replacing it now you have the new one.
     
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  10. Linkin

    Linkin The Apprentice Premium Member Dirty Wheel Club Contributing Member

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    Agreed, I have had FZR250 cam chains stretch by 5mm and that is enough to affect the timing and make the bike rattle.
     
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  11. Wozza

    Wozza Active Member

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    yeah that was the plan...onward and forward...or is that 1 step forward 3 steps back :)
     
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  12. Gizziracer

    Gizziracer Active Member Premium Member Contributing Member

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    MMMM Looks much like the the little hyvo cam chains on the Honda Spada. I still havent summoned up the courage to fit new ones to my long term rattly , 70,000km spada. Every person I ask gives different advice on rejoining the links. The importer of the cam chain reckons you just need to press the pin in with no need to peen the end. Some mechanics say this is true, some say they wouldn't trust it. Some say the joining link should be a have a hollow pin that end can easily be splayed with a good chain breaker kit(these joining links seem to be unavailable and some say they would create a weak spot in the chain)..what method are you going to use?
     
  13. Wozza

    Wozza Active Member

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    Mine is only a single cylinder so cam chain is a snap to fit without to much pull down....all the multis Ive ever done were with a joining link ... I just peen em with a drift, hammer with someone holding a metal block or hammer on the other side....
     
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  14. Linkin

    Linkin The Apprentice Premium Member Dirty Wheel Club Contributing Member

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    I have done a few cam chains, peening the end of the pin is good practice, but the first time I did a cam chain I didn't know about it at all, so it was left unpeened. It never fell out.
     

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