Specifications

DUAL-DOWNDRAFT REPAIR:
DGAV
The DGAV carburetor is representa-
tive of the family of downdraft Weber
carburetors with two venturis and two
parallel throttle shafts. The dual-venturi,
vertical carburetor is standard equipment
on most Italian cars that do not use hori-
zontal Webers such as the DCOE. It is a
favorite conversion carburetor for every
vehicle from Austin to Volkswagen.
The DGAV uses a progressive linkage
from the primary throttle shaft to operate
the secondary throttle, and there is an
automatic choke, power enrichment valve
and accelerator pump to enrich the fuel
mixture as needed. The main casting
includes the two venturis and carries all
the jets and their drilled passages. The
float bowl cover casting carries the power
enrichment valve and float assembly.
DISASSEMBLY
See the sidebar, page 45, for informa-
tion on special Weber tools. It’s not prac-
tical to disassemble this carburetor com-
pletely just to fix one part, because you
can do more accidental damage than
could ever result form normal wear. A
little extra time spent diagnosing the
problem can save the grief of breaking a
good part during disassembly.
1. Carburetor-cover assembly
2. Stud bolt
3. Carburetor-cover fixing screw
4. Choke shaft-&-lever assembly
5. Starting throttle valve
6. Retaining ring
7. Dust-seal plate
32/36 DGAV. Drawing courtesy Redline, Inc.