« Reply #2 on: November 03, 2009, 10:46:10 am »
I have a DR that I'm racing at present and have changed the exhaust (bigger diameter), carbi jetting (still experimenting) and changed the suspension. The motor is unreal and works better than my XL500 with the counter balances removed. I wouldn't change anything in the motor just let it flow better, maybe some head work and change the carbi to either bigger or a pumper. PM me if you want to know more.
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Huskies
CR250 1972, CR400 1972, SC125 1973, CR250 1975GP, WR250 1979/80, XC125 1983, TX510 1983, XC125 1984 project, CR250 1984 project
Honda's
SL100 1971, XL100 1974, Hondasaki 210, XL185 1981 project
Jawa's
1959 250 project, 1969 175 trail boss project.
Sachs 1969 125