Carburetors for old Dodge Trucks : DODGE TRUCKS 1941 1942 1946Previous | Home | Next |
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Page 4
CARBURETER SPECIFICATIONS
DTB I -DTB I R-DTB2R
DTB3-DTB3R
ETRI-ETRIR
DIMENSIONS:
Flange size—S.A.E.. ----° ----°-°---Throttle bore
Main ventur'
FLOAT SETTING
BOWL VENT:
Inside (Balanced Vent)—Size
GASOLINE INTAKE NEEDLE:
Triangular, Horizontal. Hole in needle seat.
Drill size ° .......--
IDLE ORIFICE TUBE:
Jet size °
Idle air bleed (in body), Size
Idle restriction (in body), Size
IDLE PORTS (Keyhole Type)
Upper port—length
Top of port above edge of valve
11/2"
IA" (39.69 mm)
11/4" (31.75 mm)
(1.98 mm) .218" (5.54mm) No. 44 (2.18 mm) Dr.
.0276" (.70 mm)
.067" (1.70 mm)
.054"-.055" (1.37-1.40 mm)
.160" (4.06 mm)
.030" (.76 mm)
.045" (1.14mm)
.1 18"-.I22" (3.00-3.10 mm)
.053"-.057" (1.35-1.45 mm)
11/2"
I}}" (42.86mm)
IA" (32.54 mm)
(1.98mm) .218" (5.54mm)
No. 44 (2.18 mm) Dr.
.0276" (.70 mm) .063" (1.60 mm) .049" (1.25mm)
.128" (3.25 mm)
.027" (.69 mm)
.063" (1.60 mm)
.088"-.092" (2.24-2.34 mm)
.053"-.057" (1.35-1.45 mm)
Upper port—width
Upper port—diam. hole at top
Lower port (for idle adjusting screw)
IDLE PORTS (Slot Type):
Top of port above edge of valve
Upper port—length
Upper port—width
Lower port (for idle adjustment screw)
SET IDLE ADJUSTMENT SCREW:
Turns open 1/2 to 1 1/4
1/2 to 11/4
MAIN METERING JET: f 264 to 268 (DTB2) 268 to 272
C.C. flow per minute--
254 to 258 (Others)
VENT TUBE: Through diffuser (air bleed inside
bowl), Size
.0315" (.80mm) .0315" (.80mm)
MAIN VENT TUBE: Side holes:
(2 holes .0354" [.90 mm] from end) -fa" (7.94mm) (7.94mm)
(2 holes .0354" [.90 mm] from end) I" (25.40 mm) I" (25.40 mm)
(2 holes .0354" [.90 mm] from end)
MAIN VENT TUBE:
Hole in end drill size
7 side holes on one side spaced 3/16" (4.76 mm),
1st hole 5/8" (15.88 mm) from end. Drill size
7 side holes on opposite side spaced 3/16" (4.76
mm), 1st hole 17/32" (13.49mm) from end,
drill size
STEP-UP JET: Drill size
11/2" (38.10 mm)
No. 63 (.94 mm) Dr.
No. 63 (.94 mm) Dr.
ACCELERATING PUMP: Delayed Action Type
Seasonal adjustment .1 15"-.120" (2.93-3.05 mm) .115"-.120" (2.93-3.05
mm)
Pump intake size
Pump discharge—restriction (under ball check), .062"-.065" (1.58-1.65
mm) .062"-.065" (1.58-1.65 mm)
Size ---------° °
Pump jet—discharge size .0315" (.80mm) .0374" (.95 mm)
PUMP ADJUSTMENT 24/64" (9.52 mm) 26/64" (10.32 mm)
VACUUM SPARK PORT: .040"x.110" (1.016x2.794mm) .040"x.110" (1.016x2.794mm)
Horizontal slot (round end) type. Size
Bottom of port, distance above valve .003"-.009" (.076-.299 mm) .035"-.041" (.89-1.04
mm)