will a cr500 topend bolt up on 250r cases
will a cr500 topend bolt up on 250r cases
4 strokes never die 2 strokes live for ever
from what ive heard yes!
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The bottom end probably wont last long if it does fit.
Jeff
2008 Yamaha Raptor 700
2003 Honda CBR954RR
why
4 strokes never die 2 strokes live for ever
The rod and crank were designed for only half as much force as what you're putting on to them. I would replace the crank/rod when you do it... That is, if it fits.
Jeff
2008 Yamaha Raptor 700
2003 Honda CBR954RR
the cylinder will mount to the cases.. but then you are going to have to get a different crank for the bottom end or it will just destroy it..
"If you case it, Learn to pace it"
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You will also need to machine the cases since they are meant to me used with the 250R's bore. There is a company that has been doing this. I have a link to thier site on my home computer.
MAC racing is the company that did the 500R cylinders on 250R lowerend mods but their site is down. You can find info about them on ATV Source.
http://www.atvsource.com/articles/pr...mac_racing.htm
Hmm.... What kind of money would I need to machine the cases and get another crankshaft? Does the rod from the 500 Cylinder work on the 250R Crank?
Jeff
2008 Yamaha Raptor 700
2003 Honda CBR954RR
That cyl would destroy that bottom end. send it in to a reputable company to have them go through the bottom end and replace anything that looks like it needs to be. I would not just bolt that cyl on the stock bottom end.
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