Author Topic: CR250m crankpin  (Read 1277 times)

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Offline tony27

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CR250m crankpin
« on: April 29, 2014, 11:17:01 am »
A mate snapped the rod in his elsinore at Taupo in the weekend, has a rod but no crankpin for it.
I searched for info on the rod kit here & came across a post from BigK about a ProX kit that fits along with RM250N/T Suzukis, are the pins the same as Alphasport lists the crankpin as available?

Offline bigk

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Re: CR250m crankpin
« Reply #1 on: April 29, 2014, 11:27:44 am »
Crank pins are easily sourced and able to be bought separately. You may not be able to get exactly the right length, but a few mm shorter is no problem and even a longer one can be ground to the correct length. I can measure one if you don't know the correct length?
Cheers,
K

Offline tony27

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Re: CR250m crankpin
« Reply #2 on: April 29, 2014, 11:49:26 am »
That would be helpful, he has the crank being checked for straightness at the moment & a set of cases on the way to replace the damaged set

Offline jimg1au

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Re: CR250m crankpin
« Reply #3 on: April 29, 2014, 05:50:53 pm »
the crank pins are the same as later model cr250c hot rods sell a crank rebuild kit for the next cr250s and you just add a 4mm spacer plate and away you go,just dont know which one exactly
jim

Offline bigk

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Re: CR250m crankpin
« Reply #4 on: April 30, 2014, 09:30:22 am »
Just measured 3 CR250M cranks, all measure 52mm installed width, so a 52mm pin or a tad shorter will get you out of trouble. I also measured a 79 CR250R crank which measured 58mm, so not all the same.
Cheers,
K

Offline smed

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Re: CR250m crankpin
« Reply #5 on: April 30, 2014, 02:54:15 pm »
Just saw this on Marks swap,might be of help,the third link down in the reply looks like the go :)   http://www.vintagemx.us/message_board/viewtopic.php?t=7627&sid=6274e4e6d78f893a451cb3684733c1df