Carburetors for old Dodge Trucks : DODGE MODEL DV 1935Previous | Home | Next |
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Form 6169B—Canadian
DODGE C6D2
June, 1935
Reprinted January, 1945
DODGE
MODEL DV
1935
(For complete replacement use carbureter 439S, List Price $22.05; Exchan e
Allowance on old carbureter $3.75.
DOWN-DRAFT CARBURETER—MODEL C6D2—LIST PRICE $22.05
A $3.75 exchange allowance is deducted from the list price if buyer turns in
old carbureter.
CARBURETER SPECIFICATIONS
For Dodge Six Cylinder Engine: 311/8 Inch (79.375 mm) Bore, 43/8 Inch (111.125
mm) Stroke
CAR SERIAL NUMBERS
9-316-572 and higher
DeLuxe Model
9-461-538 and higher
Dimensions: Flange size, 11/4 inch (31.75 mm). Throttle bore, 1-7/16 inch (36.51
mm). Main venturi, 11/4 inch (31.75 mm) I. D.
Float Setting: Top of float 5/64 inch (1.98 mm) below top of surface of carbureter
body casting. (Plus or minus 1/64 inch (.397 mm).
Vent: (To float chamber) outside. Size, 3/ 16 inch (4.76 mm) drill.
*Gasoline Intake Needle: Triangular, horizontal. No. 44 (2.18 mm) drill in
needle seat.
Idle Orifice Tube: 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: Upper port, Keyhole type; length, .132 inch (3.35 mm); width, .030
inch (.76 mm). .063 inch (1.60 mm) diameter hole at top.
Top of port located .085 to .089 inch (2.16 to 2.26 mm) above top edge of valve.
Lower port size, .053 to .057 inch (1.35 to 1.45 mm) diameter. (For idle adjustment
screw.)
Set Idle Adjustment Screw: 1/8 to 3/4 turns open. For richer mixture turn screw
out. Do not idle engine below 300 rpm. or 6 miles per hour.
Main Metering Jet: Calibrated to flow 262 to 266 CC per minute. (Do not gauge
for size. If in doubt, replace with new part.)
Vent Tube: Air bleed through plug in diffuser, size. .0315 inch (.80 mm) drill.
Main Vent Tube:
Side Holes:
2—.0196 inch (.50 mm), 21 /64 inch (8.33 mm) from end. 2—.0196
inch (.50 mm), I-1/b4 inch (25.8 mm) from end.
Step-up Jet: No. 65 (.89 mm) drill size.
Accelerating Pump: 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.
Pump needle seat size, .062 to .065 inch (1.58 to 1.65 mm) diameter in body.
Pump (discharge) jet size. .0315 inch (.80 mm) drill.
Choke: Manual—Butterfly type, with pressure relief poppet valve. Interconnected
to open throttle valve to fast idle position when choke is used.
Motor Tune-Up—Be Accurate) Always Use Feeler Gauges!
CAUTION: Change worn or leaky flange gaskets. Tighten me nifold bolts and test
compression before adjusting carbureter.
Use Gauge 5/64 Inch
Idle Adjustment Screw Setting
1/8 to 3/4 Turn Open
Spark Plug Gap .025"
Set
Breaker Points
.020"
Use Timing Light or Motor Gauge
Breaker Points to Open
40 or .007" After Top Dead Center
(Cast Iron Head-6.7 to I Compression)
R ~I WHEN MOTOR IS
iii AT OPERATING
' TEMPERATURE
VALVE CLEARANCE
Set Valves Intake .006" Exhaust .008"
CARBURETER ADJUSTMENTS
If carbureter loads up after considerable service, check float level. Wear
on lip of float lever will raise float level. Before adjusting float, be sure
float lever pin plug is firmly seated. Reset float level by bending lip of
float lever away from needle to raise level, or bend lip toward needle to lower
float level. Bend vertical lip of float only.
If motor stalls while idling, set throttle lever adjusting screw so motor runs
approximately 300 r.p.m. Then set idle adjustment screw as instructed above.
If these adjustments do not correct the trouble, remove idle orifice tube and
plug assembly and clean with compressed air.
If acceleration is not satisfactory remove pump jet and clean with compressed
air. Also examine pump link setting. Pump link has three holes giving short,
medium and long strokes. If link is set to short stroke, reset to give longer
stroke to pump piston In hot weather, high altitudes, or
Caution: Do not attempt to gauge metering jets with drills. These jets have
been flow-tested, to insure correct fuel now.
Copyright 1035
when high test gasoline is used, connect pump link in Inner hole, giving shorter
stroke.
Maximum economy is secured only when breaker points, spark plugs, valves and
motor timing are set to manufacturer's specifications. After motor Is I.ruperly
tuned, the following should also be done to insure satisfactory performance
and economy:
(a) Float level must be set as above.
(b) Sts-p-up rod In step-up jet must seat and move freely. When reassembling,
jet must he screwed in tight against seat.
(c) Step-up piston in body casting should not bind and must be free of dirt.
(d) 'lain metering jet can be replaced with leaner than standard metering jets,
for altitude or high test fuel.