I am working on an old Model A carburetor. It is a Zenith updraft, typical of the ones used in the 20’s and 30’s. These carburetors tend to wear at the throttle shaft causing a vacuum leak. This carburetor has had this problem in the past and was repaired by installing throttle shaft bushings. The bushing have failed leaving oval shaped holes in the casting. I would like to bore the casting to .375 dia., install oversized bushings and then drill and ream for the final shaft size.
The problem is the carburetor is about 2.5 inches wide, which means that I will have an interrupted bore of almost 2.5 inches and it ends in a blind hole. I have not been able to find a small boring bar that is long enough.
Any suggestions??
The problem is the carburetor is about 2.5 inches wide, which means that I will have an interrupted bore of almost 2.5 inches and it ends in a blind hole. I have not been able to find a small boring bar that is long enough.
Any suggestions??