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Board index » Questions & Answers » Honda CR, MR & MT

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chicagojerry
 Post subject: cr 250m gp porting specs
PostPosted: Wed Jul 21, 2004 4:07 pm 
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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Rick
 Post subject:
PostPosted: Wed Jul 21, 2004 10:15 pm 
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Joined: Tue Jan 27, 2004 8:51 pm
Posts: 136
Location: Gilbert, AZ
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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