Don Dunbar, Dave Mccandless and I took a close look at this Revmaster carb for
use with rotary, One would need two to get over 200 HP.
This looks like a good low cost and simple solution for the fuel system.
It appears to be  a Mikuni flat slide carb of some kind with the float
bowl removed. However I cannot find the exact Mikuni model or on what vehicle
it was used. I suspect the float bowl is removed to allow the mixture
to be adjusted using a low pressure gravity fuel feed. Rather brilliant
idea on Joe Horvath's parts. Joe is charging $330 each so I'll bet the
original version with float bowl is a lot cheaper.

Any body recognize this carb body?


Paul Lamar


    It looks like a variation of a quicksilver carb.

http://www.edelbrock.com/motorcycle/carbs/carb_internals.pdf

http://www.edelbrock.com/motorcycle/carbs/intro.shtml

Jim Pollard


Yes. They are for a whole wide range of off road vehicles.
They all seem to have about a 40 mm bore in common.
Therefore they  are limited to about 40 to 50 HP per carb.

On second thought not a good solution for a rotary.

You need at least two 48 to 50 mm bore carbs for a p-port rotary.
That gets us back to the Big Mikuni size carbs.

Now you must figure out a way to lean them at altitude.
Not easy. I think the float bowl is already pressurized
by dynamic pressure.

Paul Lamar