Hudson 1948 - 1952, Service Manual

Page: 86 / 333

4 - 2 ENGINE
SECTION 4
FUEL SYSTEM & EXHAUST
CARBURETOR WA-1-968-S
(1952 to ‘53, 262 dual)
SPECIFICATIONS:
Make
Type
Main Venturi
Primary Venturi
Secondary Venturi
Flange Size
Float Level
Idle Adjustment
Pump Plunger Travel from
Closed to Wide Open Throttle
Low Speed Jet Tube
Vent
Gasoline Intake
Idle Port
Idle Port Opening
Idle Screw Seat
Main Nozzle:
Carter
Single Throat Down Draft
1-3/8" I.D.
11/32" I.D.
11/16" I.D.
1-1/2"
1/2"
1-1/4" to 2-1/4" turns open
16/64
Metering Rod Jet
Metering Rod
Length
Economy Step
Middle Step Tapers to
Power Step
Anti-Percolator Valve:
.1015" Diameter
(Vacumeter Type)
3-9/64"
.076" Diameter
.063" Diameter
.056" Diameter
Saxophone Key
Jet size No. 65 (.035")
drill. By-pass, size 1.6
MM (.063") drill. Econo-
mizer, in body, .0545" -
.0555" diameter. Idle
bleed, size No. 52 (.0635")
drill.
Outside only No. 10
drill.
Square vertical push-
pull needle, size No. 46
(.081") drill hole in needle
seat.
Length .190", Width
.040".
178" t o .182" above
valve with valve tightly
closed.
No. 46 drill.
Slip nozzle, flush type,
(angle tip) seats in pri-
mary venturi at 45° an-
gle. Discharge jet size
.110" diameter. Inner
nozzle (seats in slip noz-
zle). Inside diameter
No. 31 (.120") drill.
Metering Rod Setting:
Use Gauge J-1265 Carter T-109-102
Accelerating Pump:
Pressure type with adjustable stroke. Dis-
charge jet, size No. 74 (.0225") drill. Intake
ball check size No. 60 (.040") drill. Discharge
ball check size No. 32 (.116") drill. Relief
passage (to outside) No. 42 (.0935") drill.
Pump Adjustment - 16/64" plunger travel.
Medium stroke. Use gauge No. T-109-102.
Choke: Climatic control, set 1 point lean. Butterfly
type , offset valve. Choke heat suction
hole in body, size No. 40 (.098") drill.
Vacuum Spark Port: .054" - .057" diameter.
Bottom of port .049"
above top edge of valve.