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Carburetors for old Dodge Trucks : DODGE TRUCKS 1936

DODGE TRUCKS, 1936
Page 2
CARBURETER SPECIFICATIONS-CARI3URETERS CTF I -ETG I
Dimensions: (CTFI) Flange size, 11/4 inch S. A. E. (ETGI) Flange size, 11/2 inch S. A. E.
(CTFI) Throttle bore, 1-7/ 16 inch (36.51 mm). (ETGI) Throttle bore, I - I I / 16 inch (42.86 mm).
(CTFI) Main venturi, 11/4 inch (31.75 mm) I. D. (ETGI) Main venturi, 1-9/32 inch (32.54 mm) I. D.
Float Setting: (Both Models) Top of float 5/64 inch (1.98 mm) plus or minus 1/64 inch (.397 mm) below top of surface of carburetor body casting.
Vent: (Both Models) (to float chamber) outside. Size, 3/ 16 inch (4.76 mm) drill. Gasoline Intake Needle: (Both Models) Triangular, horizontal. No. 42 (2.37 mm) drill in needle seat.
Idle Orifice Tube: (Both Models) Jet size, .0276 inch (.70 mm).
Idle passage air bleed (in body) size .063 inch (1.60 mm). Economizer (in body) size .049 inch (1.25 mm) diameter.
Idle Ports: (CTFI) Upper port, keyhole type; length .132 inch (3.35 mm). Width, .030 inch (.76 mm); .063 inch (1.60 mm) diameter hole at top.
(ETGI) Upper port, keyhole type; length, .128 inch (3.25 mm); width, .027 inch (.69 mm); .063 inch (1.60 mm) diameter hole at top.
(CTFI) Top of port located .085 to .089 inch (2.16 to 2.26 mm) above top edge of valve.
(ETGI) Top of port located .081 to .085 inch (2.06 to 2.16 mm) above top edge of valve.
(Both Models) Lower port size, .053 to .057 inch (I.35 to 1.45 mm) diameter. (For idle adjustment screw.)
Idle Adjustment Screw (CTFI) Set tolls to 3/4 turns open. For richer mixture turn screw out. (ETG I) Set to 1/4 to I turn open. For richer mixture turn screw out. Do not idle engine below 300 rpm. or six miles per hour.
Main Metering Jet: (CTFI) Calibrated to flow 262 to 266 cc per minute. (ETGI) Calibrated to flow 282 to 286 cc per minute.
(Do not gauge for size. If in doubt, replace with new part.)
Vent Tube: (Both Models) Air bleed through plug in diffuser, size .0315 inch (.80 mm) drill.
Main Vent Tube: Side Holes:
(CTFI) 2-.0196 inch (.50 mm) 21/64 inch (8.33 mm) from end. 2-.0196 inch (.50 mm) I-1/64 inch (25.8 mm) from end.
(ETGI) 2-.0354 inch (.90 mm) 21/64 inch (8.33 mm) from end. 2-.0354 inch (.90 mm) I-I/64 inch (25.8 mm) from end.
Step-up Jet: (CTFI) No. 65 (.89 mm) drill size. (ETGI) No. 63 (.94 mm) drill size.
Accelerating Pump: (Both Models) Type, delayed action.
Stroke, Summer setting (inner hole, short stroke).
Intermediate setting (center hole).
Winter setting (outer hole, long stroke).
Pump intake passage, size .115 to .120 inch (2.93 to 3.05 mm) diameter, in body.
Pump needle seat, size .062 to .065 inch (1.58 to 1.65 mm) diameter in body.
(CTFI) Pump (discharge) jet size, .0315 inch (.80 mm) drill.
(ETGI) Pump (discharge) jet size, .0354 inch (.90 mm) drill.
Vacuum Spark Port: (CTFI) .069 to .073 inch (1.75-1.85 mm) diameter. Bottom of port .015 inch (.38 mm) above valve.
Choke: (Both Models) Manual—butterfly type, with pressure relief poppet valve.