Why do you want to replace it?
The Carter W-1 was a good looking Carburetor and the ones I have had, were very reliable, and super easy to tear down and or rebuild if need be.
About the only deal breaker is if the Throttle's Butterfly Pivot/Axel has worn the Casting holes really badly so it is sucking in Air there. and I fixed one like that by Brazing then drilling a careful Hole.
Easy enough to get a good used Iron Base if one has one which is too worn out there at the Pivot/Axel Holes.
Last edited by Thriftmaster_Phi; 07/12/2014 7:22 PM.