Goach,
My 1929-51 parts book lists a 93 main jet and a 66-42/75/562 as the original main jet and metering rod for your carburetor. Your engine may like other jetting. A little trial error experimenting will get you to the precise rod/jet combo that your engine likes.
The present symptom indicates an inadequate accelerator pump squirt. There are 2 check valves in the accelerator pump circuit that must be working correctly. Also the timing and quantity of the squirt are affected by the vertical link adjustment and slop in the bell crank bore and throttle shaft bores.
Rochester Quadrajet throttle shaft bushings are perfect for your W-1. A custom bushing is required to tighten up the bell crank bore if the bell crank is on a shaft that pivots in the float bowl cover. NOS float bowl covers are common on ebay too.
Last edited by yar; 04/07/2017 6:49 PM.
