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 Post subject: 1980 CR 125 Help please
PostPosted: Wed Aug 30, 2017 5:52 pm 
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Joined: Tue Nov 04, 2008 6:46 pm
Posts: 6
Picked up this 1980 CR 125 yesterday on dallas craigslist. Needs a new crankshaft. Question, will a 1981 work? Also it has this aluminum swingarm, possibly different shock springs. It could be a great restoration candidate. Its mostly all there. I won't tell you what I gave, but lets just say I got a great deal. Its a barn find. Any help would be greatly appreciated

Bryan


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PostPosted: Wed Aug 30, 2017 5:55 pm 
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Joined: Tue Nov 04, 2008 6:46 pm
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Here's the picture. Hope it uploaded.


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PostPosted: Thu Aug 31, 2017 6:01 am 
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Joined: Sun Jul 22, 2012 6:03 pm
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You should just have the crankshaft rebuilt.


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PostPosted: Wed Nov 15, 2017 9:38 am 
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Joined: Fri Jan 24, 2014 12:39 pm
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The rods are not the same for 80-81 125's. Hot Rods makes a rod kit for 81-84 models but that doesn't help you any. You will need to search for a rod kit for a 1980. As far as I know the 79's were different since Honda had a new motor in 79 and 1980. Any decent bike shop can press a new rod onto your crank and true it up. I do them for $40.


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PostPosted: Wed Feb 21, 2018 3:52 pm 
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Joined: Fri Mar 06, 2009 9:58 am
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Pretty sure on that crank you need to bore the crank cheeks to accept a larger diameter pin so you can find a rod kit . If you still need help let me know and I will do some more research . We have done a few bikes where you just cant get rod kits and the bigger bottom pin is the answer . We have fixtures already made if that's the route you need to go and we are super reasonable on price .
John redrocketracers.com


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PostPosted: Thu Sep 13, 2018 7:34 am 
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Joined: Mon Dec 15, 2014 6:29 pm
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Like John said you can use the rod from an 81-84 CR (I believe it is the same one as the Suzuki RM). You just need to rebore the holes for the pin at the crankshaft to a larger size. I have done it to several 1980 cranks. Crank works in Arizona does a great job.


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