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Stroker Crank for CRF50

Old Jan 4, 2009 | 01:29 PM
  #1  
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Stroker Crank for CRF50

I got this stroker crank with my engine and recently decided not to use it myself. It is brand new and never used. I do not know any technical aspects or what brand it is but I took a pic of the only logo stamped on it and at least it is not stamped "CHINA". I'm asking $75 shipped within the lower 48. If anyone thinks this is ridiculous, please let me know as I don't have a whole lot to base it off of other than TB selling one for $200 with a gasket. Thanks.
Rob
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Old Jan 4, 2009 | 02:23 PM
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Re: Stroker Crank for CRF50

Where or who did you get it from ?
Old Jan 4, 2009 | 05:12 PM
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Re: Stroker Crank for CRF50

i dont get how a stroker makes it faster.
Old Jan 5, 2009 | 07:23 AM
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Re: Stroker Crank for CRF50

Originally Posted by NiftyFIFTY
i dont get how a stroker makes it faster.
A stroker changes the travel of your connecting rod inside the engine , making your piston travel further up and down . Making your engine size bigger . I think a large 52mm stroker crank will make your fiddy like a 117cc .

Depending on what size crank this is , you will have to do some work inside the engine for the connecting rod to clear certain areas inside the case .

You will also need a different cylinder and piston , head , (depending on what size stroker you use) , when using a stroker crank .

Last edited by Crazy D; Jan 5, 2009 at 07:49 AM.
Old Jan 5, 2009 | 04:31 PM
  #5  
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Re: Stroker Crank for CRF50

I got it from the guy I bought my bike from... I planned on putting it in just like he had planned but decided not to because it requires changing too much... I did a 88kit and race head and all that but everything I read about the stroker said I would also have to do a stronger tranny & manual clutch. Is the 52 mm measurement taken from center of eye to eye on the crank? If anyone can tell me how to measure it correctly, I will post it up here.
Thanks
Rob
Old Jan 5, 2009 | 05:11 PM
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Re: Stroker Crank for CRF50

Originally Posted by Crazy D
A stroker changes the travel of your connecting rod inside the engine , making your piston travel further up and down . Making your engine size bigger . I think a large 52mm stroker crank will make your fiddy like a 117cc .

Depending on what size crank this is , you will have to do some work inside the engine for the connecting rod to clear certain areas inside the case .

You will also need a different cylinder and piston , head , (depending on what size stroker you use) , when using a stroker crank .
yeah i thought it made the piston travel farther, thanks for lettin me kno
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