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Carter WD-0 2 Barrel Carburetor 440S

Carter WD0 2 Barrel Carburetor 440S

1939 Buick Model 40

Carter WD0
Carter WD0 440S Carbuetor Kit
Carburetor Specifications
Dimensions: Flange size: 1″ dual, 3 bolt type
Primary venturi: 11/32″
Secondary venturi: 21/32″
Main venturi: 1 1/16″ ID
Float level: Distance from float to bowl cover to be 3/16″ when needle is seated.
Outside vent: No. 10 drill
Anti percolation vent tube: Above nozzle, 20 deg tip. Inside diameter No. 42 drill. Relation tip of tube to inside primary venturi .065″
Gas line connection: 5/16″ fitting
Low speed jet tube:
Jet size No. 70 drill
Bypass (plug) No. 55 drill
Economizer in body No. 58 drill
Idle bleed No. 56 drill
Idle ports: Upper port, slot type, length .1″ width .030″
Top of port .060″ to .066″ above upper edge of valve.
Lower port size .0615″ to .0655″ diameter.
Idle adjustment screw: 1/2 – 1 1/4 turns open. For richer mixture turn screw out.
Main nozzle: In primary venturi angle 45 deg. Discharge jets size: upper hole No. 75 drill, Lower hole No.52 drill
Metering Rod: Economy step, .063″ diameter; second step tapers to .059″ diameter; third step .059″ diameter; power step .055″ diameter. Length of rod, 2.922″
Main jet: .082″
Metering rod setting: 2.280″
Adjustment should be made when reassembling carburetor or when leaner than standard rods are installed. Do not disturb the pump adjustment.
Accelerating pump: Discharge jet size No. 74 drill
Intake ball check No. 40 drill (in body)
Discharge ball check No.50 drill (in body)
Relief passage to outside, No. 42 drill
Pump adjustment: 21/64″ plnger travel (in center of medium stroke)
With pump connector link in medium stroke and throttle adjustment screw backed out, pump plunger should travel 21/64″ from closed to wide open position. Adjustment can be made by bending hrottle connector rod at lower angle.
Starter switch: Connect the red (hot) wire to switch terminal closest to motor.
Unloader adjustment: with throttle wide open, distance between upper edge of choke valve and inner wall of air horn should be 3/16″. Adjust by bending lip on fast idle connector link. With throttle wide open, push choker valve open. Choke should lock in wide oopen position. If it does not lock, recheck unloader adjustment. Closing the throttle will release choker valve. Choker trip lever is notched out for this setting.
Fast idle adjustment: Hold choker valve tightly closed and adjust fast idle arm srew to give .018″ opening between edge of throtle valve and bore of carburetor, size opposite port.
Carter WD0
1-226s Body flange assembly 63-45 Ball retainer ring
2-89 Throttle valve 64-57s Plunger and rod assembly
3-333s Throttle shaft and lever assembly 75-371 Metering rod – std (.063″-.063″ to .059″ – .055″)
4-327s Throttle lever assembly (loose) 75-397 Metering rod 1 size lean (.064″-.-64″ to .060″-.056″)
6-286 Air horn 86-9 Bowl cover attaching screw lock washer
6-309s Air horn and climatic control asembly 86-12 Flange stud lock washer
7-90 Choker valve (superseded by 7-113) 86-17 Air horn attaching screw lock washer
7-113 Choker valve 86-37 Switch terminal lock washer
11-163s Low speed jet assembly No. 70 drill 101-10 Wire clamp screw
11B-26 Rivet plug 101-61 Bowl cover attaching screw
11B-41 Rivet plug 101-65 Thermostat housing and trip lever attaching screew
11B-79 Rivet plug 101-68 Body flange attaching screw
11B-108 Idle port rivet plug 101-69 Throttle centering screw
11B-126 Nozzle passage plug 101-70 Fast idle arm attaching screw
11B-134 Rivet plug 101-72 Air horn attaching screw
11B-135 Bypass bleeder screw plug 101-74 Throttle shaft arm attaching screw
11B-137 Ball retainer plug 101-109 Switch terminal screw
11B-141 Nozzle retainer plug 101-112 Terminal cap attaching screw
11B-146 Pump jet passage plug 101-115 Fast idle adjustment screw
12-250 Nozzle 101-121 Throttle lever adjustment screw
14-219 Choker trip lever 101-124 Body flange attaching screw
14-225s Choker piston lever, link and shaft assembly 105-11 Tube clamp screw
14-249 Choker trip lever 105A-8 Tube clamp nut
15-35s Strainer nut and gasket assembly 111-32s Metering rod arm and screw assembly
20-22 Needle seat gasket 114-34s Throttle shaft arm and pin assembly
20-35 Bowl strainer gasket 115-54 Throttle connector rod
20-45 Nozzle gasket 116-13 Pump check ball
20-54 Metering rod jet gasket 116-19 Switch ball
20-55 Idle passage gasket 117-47 Fast idle connector link
21-64s Float and lever assembly 117-58 Pump arm link
24-24 Float lever pin 118-33 Dust cover
25-80s Needle and seat assembly 120-65s Metering rod jet and gasket assembly (..082″)
30-14 Bowl cover strainer gauze 121-43 Body flange gasket
30-23 Piston housing strainer 121-61 Air horn gasket
30-34 Pump strainer 121-63 Bowl cover gasket
30-36 Switch strainer 129-12 Metering rod disk
30A-41 Idle adjustment screw 136-34 Choke shaft washer
39-10 Valve attaching screw 136-38 Throttle shaft washer
48-74 Pump jet (No. 74 drill) 136-53 Return spring washer
49-117 Switch plunger 146-74 Bowl cover
53A-163s Pump arm and collar assembly 146-79s Bowl cover and strainer
53A-164s Pump operaing lever and contershaft assembly 150-62 Piston pin
53A-178s Fast idle arm, pin and screw assembly 150-81 Metering rod pin
61-57 Adjustment screw lock spring 150A-10 Pin spring
61-120 Metering rod spring 150A-14 Pin spring
61-123 Connector link spring 153-11 Switch contact spring shim .018″
61-128 Connector rod spring 160-35 Choke piston
61-133 Fast idle arm spring 160-58s Vacuum piston and link assembly
61-169 Pump arm spring 170F23s Thermostatic coil and housing assembly
61-171 Pump spring 172-12 Hold down clip (terminal cap)
61-176 Vacuum piston spring 172-13 Cable clip
61-194 Switch contact spring 181-21s Fast idle cam and collar assembly
61-195 Switch return spring 181-64 Guide block switch
62-99s Tube clamp assembly 184-20s Terminal cap assembly
63-33 Housing retainer 192-10U Carter starter unit
63-35 Spring retainer
63-43 Switch strainer retainer ring
Updated on 12/08/2020

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