Quote:
Originally Posted by jmeckel
The early Zenith 1 and 2's had a brass GAV seat that later was replaced by just machining the seat in the casting............
|
Quote:
Originally Posted by Jazzjr
The only Model A Carb I've ever seen that used the Brass GAV Seat, was the early 28 carbs that were built by Holley, with a Letter H cast in both the upper and lower body's of the Carb.
All the rest had a Cast Seat in the GAV tunnel, Machined in. Zenith G and 1-2-3
.................
|
Look at the Restoration Guidelines and Judging standards Area 1, Engine, pages 1-12 & 1-13 Revised 2013. The removable brass gas adjusting valve seat was standard in both the Zenith 1, manufactured by Zenith, and the Zenith 2, manufactured by Holley from start of production, (SOP), through January 1930.