Carter W-1 Identification.
The Carter W-1 used a tag attached to the top of the carburetor. The carburetor number would be stamped on this tag and looks like xxxS. That is 3 numbers followed by a S. When the tag is missing watch the video below to identify the correct carburetor kit.


Carter W-1 Carburetor Kit

Watch a video about how to determine which is the correct kit for your W-1 carburetor.


Watch a video about the W-1 accelerator pump.


W-1 Vent
Some W-1 carburetors will have this part.

It is an "anti-percolator valve" according to Carter nomenclature, or simply a bowl vent valve to the rest of us. It is triggered to close (pop up) when the accelerator pump is activated and to open (pushed down) when the throttle position returns to idle. Just be sure it moves up and down freely.
Carter Carb Parts

Carter W-1 Identification
342S - Oldsmobile 2 float bowl screws showing. Vacuum port on the Carter W-1 stamped side.
 
 
CARBURETOR KIT
395S - Studebaker 2 float bowl screws showing. Large brass nut on the top of the inlet. Vacuum port on the Carter W-1 stamped side.
 
 
 
420S - Chevrolet 3 float bowl screws showing. No vacuum port on the Carter W-1 stamped side.
 
 
 

 


Carter W-1 Carburetor Manual

Carter W-1 Climatic Control Carburetor Manual

 
Carburetor Number
Application
Float Level
Metering Rod
212S, 235S
1932 Chevrolet Confederate
3/8"
75-60 56-45
222S
1932 Confederate Truck
3/8"
75-54 66-62
222SA
1932 Confederate Truck
3/8"
75-66 65-62
259S
 
 
 
255S
 
 
 
266S
 
 
 
260S
 
 
 
282S
 
3/8"
75-107
284S
 
 
 
285S
 
 
 
282S
 
 
 
299S
 
3/8"
75-120
306S
 
 
 
280S
 
 
 
291S
 
 
 
290S
 
 
 
298S
 
 
 
295S
 
 
 
308S-336S
 
 
 
309S
 
3/8"
75-106
310S
Hudson 1935 HT, HU HHU
3/8"
75-107
311S
 
 
 
312S
Hudson 1935 GH
3/8"
75-141
314S
 
 
 
315S
 
 
 
319S
 
 
 
327S
 
1/2"
75-175
330S
Hudson 1936 64, 65, 66, 67
3/8"
75-159
334S
 
 
 
319S
 
 
 
334S
 
 
 
316S
 
 
 
321S
 
 
 
321S
 
 
 
322S
 
 
 
324S
 
 
 
339S
 
3/8"
75-175
340S
 
 
 
330S
 
 
 
331S
 
 
 
331S-348S
 
 
 
348S
 
 
 
329S
 
 
 
309S
 
 
 
327S
 
 
 
335S
 
 
 
335S
 
 
 
333S
 
 
 
342S
 
3/8"
75-175
350S
 
 
 
351S
 
3/8"
75-194
346S
 
 
 
346S
 
 
 
352S
 
 
 
352S
 
 
 
222S
 
 
 
425S
 
 
 
259S
 
 
 
285S
 
 
 
291S
 
 
 
307S
 
 
 
435S
 
 
 
351S
 
 
 
385S
 
3/8"
75-194
464S
 
 
 
394S
 
 
 
395S
 
 
 
364S
 
 
 
359S
 
 
 
371S
 
 
 
360S
 
 
 
378S
 
 
 
388S
 
3/8"
75-262
391S
 
 
 
391S
 
 
 
437S
 
 
 
397S
 
 
 
437S
 
 
 
400S
 
 
 
401S
 
 
 
401S
 
 
 
398S
 
 
 
411S
1938 Hudson 112
3/8"
75-336
417S
1938 Hudson 112
3/8"
75-336
418S
 
 
 
420S
 
 
 
434S
 
 
 
438S
 
 
 
438S
 
 
 
400S
 
 
 
483S
 
 
 
492S
 
 
 
515S
 
 
 
570S
 
 
 
574S
 
 
 
569S
 
 
 
616S
 
 
 
523S
 
 
 
684S
 
 
 
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