Ray Sametz said:
Fester, Give me I.D. and O.D. maybe I have something. I have no stock carbs, maybe find something that works. Ray
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The 9400 series carb that came with the 7.5 K&B drum rotor motor was .375" bore with a .625" carb neck that inserts into the rotor housing.
The 9400 series carb that came with the K&B drum motors had the same "effective" cross sectional area as the K&B RED carb did with a .343" bore.
A K&B RED carb in an adapter with a remote manual or 3rd channel needle works great in the 7.5 drum valve motors.
If you get one of the older original 9400 series 7.5 carbs you have to pay very close attention to the barrel rotation or you will damned sure blow up your motor.
Rod Geraghty
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