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09-18-2007
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 How To ok i have a 89 rm250 and a 90 kx80 my 2nd cyl for my 250 is unported and so is my 80 well i have a very extinsive back ground in mechanics,machining, and fabricating and i would like to learn how to port my own cyl's now i have idea of how its done but i dont kno what to look for to make sure it dosent affect tha piston or rings but i would like to hear from yall's experience
__________________ 1990 KX80 - being rebuilt and modded 1989 RM 250 - bored .020" over and ported with a FMF fatty and silencer 1996 XR l00R - also being rebuilt putting a 120cc big bore hot cam full BBR exhaust and all new plastics along with paint job    BEEN THERE-WRECKED THAT-AND FIXED IT      |
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09-18-2007
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| do your reserch... get on motor building forums... i seen dvd's on ebay on how to port.. |
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09-19-2007
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| start by reading two-stroke performance tuning by A Graham Bell there are several other books on 2 stroke theory like Gordon Jennings I think i have a link to that one to read on-line but Bell's book is more up to date IMO they both will give you tons of info http://edj.net/2stroke/jennings/ |
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