Vintage Dirt Bike Q & A

Has anyone run a larger carb on the 1983 CR480?

Does Mikuni make a carb larger than 38mm?

J

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#829 The "Factory Novice"

1988 Honda CR250RJ
1983 Honda CR480
1981 Can-Am 250 MX6-B
1979 Honda CR250RZ
1979 Kawasaki KX250 A5
1978 Husky 250CR
1978 Honda CR250R
1977 Yamaha YZ400D
1977 Suzuki RM125B

The Mikuni 40mm VM round slide carb is discontinued so the next size up is a somewhat impractical 44mm. There is a 40mm TM flat side carb available. (http://www.sudco.com) Begs the question why would you want to make this bike more powerful at the expense of the bottom-end? Have they started post-vintage classes in Supermoto?

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Michael Stiles
1979 Honda CR250R Elsinore | 2006 Husqvarna SM510R | 2007 Service Honda CR500R-AF

Michael,

I didn't want to lose the bottom end, but I was trying to think of ways to extend the powerband a little.

When we are lined up against a sea of CR480's in the near future, we might want a slight advantage to the first corner (There were 7 CR480's at the Madera National.)

J

_________________
#829 The "Factory Novice"

1988 Honda CR250RJ
1983 Honda CR480
1981 Can-Am 250 MX6-B
1979 Honda CR250RZ
1979 Kawasaki KX250 A5
1978 Husky 250CR
1978 Honda CR250R
1977 Yamaha YZ400D
1977 Suzuki RM125B