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| cr 250m gp porting specs https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=317 |
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| Author: | chicagojerry [ Wed Jul 21, 2004 4:07 pm ] |
| Post subject: | cr 250m gp porting specs |
hi folks, does anyone out there have porting specs/diagrams to modify a 74 cr 250 cylinder to gp status? thnaks, jerry |
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| Author: | Rick [ Wed Jul 21, 2004 10:15 pm ] |
| Post subject: | |
I have a NOS GP cyclinder (complete top end less head). I am sure technology passed this up several decades ago as it seems to mainly be cleaned up ports and intake. If you want I can link some pics here so you can see what I mean. Just ask and give me several days to do it. Rick |
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