Carburetors for old Dodge Trucks : DODGE TRUCK 1946 1947Previous | Home | Next |
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Form 6551—Canadian DODGE TRUCK EYCI-EYC3
August, 1947
DODGE TRUCK 1946 1947
BB DOWN-DRAFT CARBURETERS WITH GOVERNOR—EYCI-EYC3—LIST PRICE $53.75
(EYCI Superseded by EYC3) DODGE MODEL WJ
EXCHANGE ALLOWANCE $10.00
Note: Truck Serial Nos. 81850001 and higher. Motor Nos. T-136, 1001 and higher
CARBURETER SPECIFICATIONS
Six Cylinder Engine: 33/4 Inch Bore, 4¼ Inch Stroke
Dimensions: Flange size, 11/2 inch S. A. E. Vacuum Spark Port: None.
Throttle bore, I-I I/16 inch (42.86 mm).
Main venturi, I-I I/32 inch (3.413 mm).
Main Metering Jet: Calibrated to flow 344 to 348 cc per
minute. Do not gauge for size. If in doubt, replace with
new part.
Float Setting: Top of float 5/64 inch (1.98 mm) plus or minus
1/64 inch (.397 mm) below top surface of carburetor body
casting. Main Vent: Fuel chamber to vent tube well (in air horn), size
Vents: Outside: none. Inside: balance vent tube .218 inch .063 inch (1.60 mm)
diameter. In vent tube plug, size .0433
(1.10 mm) diameter.
(5.56 mm) inside diameter.
Gasoline Intake Needle: Triangular, horizontal, needle seat hole Main Vent Tube:
Side holes: I—.0354 (.90 mm) diameter, 3/32
No. 44 (2.18 mm) drill. inch (2.381 mm) from end.
1—.0354 (.90 mm) diameter, 1/8 inch (3.175 mm) from end.
Idle Orifice Tube: Jet size, .0276 inch (.70 mm). 1—.0236 (.60 mm) diameter,
1/2 inch (12.70 mm) from end.
Idle air bleed (in air horn), size .0688
passage
inch (1.75
1—.0236 (.60 mm) diameter, 17/32 inch (13.49 mm) from end.
mm). I—.0157 (.40 mm) diameter, 1-15/32 inch (37.31 mm) from
(EYCI) Idle restriction in body, size .059 inch (1.50 mm),
(EYC3) Size .0629 (1.60 mm). end.
Idle Ports: Upper port: slot type. Length, .128 inch (3.251 mm). Width, .027
inch (.686 mm).
Top of port .088 to .098 (2.235 mm to 2.489 mm) above top edge of valve (in slot).
Lower port size: .053 to .057 inch (1.35 to 1.45 mm) diameter (For idle adjustment
screw).
Set Idle Adjustment: (EYCI) 5/8 to I1/8 turns open, (EYC3) 3/4 to 11/4 turns
open. For richer mixture turn screw out. Do not idle engine below 500 to 600
r.p.m. motor speed.
Step-Up Jet: Size, .0492 (1.25 mm) diameter.
Accelerating Pump: Type, vacuum operated. Stroke, non-adjustable. Pump intake
passage ball check seat, size .115 to .120 inch (2.93 to 3.05 mm) diameter.
Pump discharge passage, ball check seat size, .062 to .065 inch (1.58 to 1.65
mm) diameter.
Pump discharge jet, size .0315 inch (.80 mm) diameter.
Choke: Manual—offset butterfly type, with poppet valve.
FOR GOVERNOR INSTRUCTIONS, SEE FORM 6545
MOTOR TUNE-UP
Spark Plug Set Breaker Use Motor Gauge
Gap Points Breaker Points to Open
.025" .020" .005" (3° B.T.D.C.)Set Valves
(Hot) Float Setting
Intake .010" 5/64 Inch Exhaust .018"
Idle Adjustment
Screw Setting
(EYCI) 5/s to 111/
Turns Open
(EYC3) 3/4 to 1¼
Turns Open
Copyright 1947