Re: Carter WDO 351S
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Are you sure that you have a WDO carburetor?
Some 1950 models used the WGD which continued through to 1954. information for the WGD can be found in the 1951-54 service manual on this site. Also note that the Carter 351S carburetor is a single barrel used on 1937 Oldsmobile 6 cylinder models. There was a Carter 531S and 531SA used for Packards with the 356 engine from 1942 to 1950 Your carburetor should have a triangular brass tag on it that will show the model number. Confirmation of exactly which carburetor you have will help greatly for suggestions on setup.
Posted on: 2021/12/13 21:24
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Re: Carter WDO 351S
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Probably the easiest way to tell the difference between the WDO and WGD is the height of the dust cover, Carter part number 118-33 (WDO) or 118-68 (WGD), and the location of the fuel inlet. In the WDO the fuel inlet favored the passenger’s side of the car, while the WGD had the fuel inlet favoring the driver’s side. In the WDO the dust cover, that would be the upper portion of the carburetor between the air horn and the fuel inlet, will be several inches tall, while the dust cover on the WGD is perhaps ¼ inch in height. The WDO dust cover will also have oiling instructions (oil under screws) on the cover.
And then there’s the location of the throttle linkage. WDO is on the passenger’s side, while the WGD it’s on the driver’s side of the carburetor. I think the industry was moving to ‘left-hand’ throttle linkage, and if you want to have ‘right-hand’ linkage that will cost more . . .but that’s just my theory. While all carburetors left the Carter factory with an identification tag, after 70 + years so of those tags have left home. Once we get past the WDO/WGD question the true configuration can be determined from the part number of the jets and air bleeds. Perhaps you can expand on the discussion about the choke.
Posted on: 2021/12/13 23:22
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Re: Carter WDO 351S
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The starter wouldn't engage as long as the key is in the off position, would it?
Posted on: 2021/12/14 8:44
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Re: Carter WDO 351S
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Depends on the year and if the starter circuit is powered from the correct post at the ignition switch. The identification markings are tiny and positioned to be easily damaged so the terminal IDs can be mixed up on the Packard switch. Some prewar models had the starter circuit active all the time so would crank but not start if the key was off. After those models thru 1948 the key had only one "on" position and key had to be turned to the right or run position to crank and start. From 49-53 the switch had two on positions and engine would crank in either but only start if turned to the right. In 54 thru the end Packard went to the modern 4 position switch so will only crank in the start position when key is turned and held against the spring.
Posted on: 2021/12/14 9:36
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Howard
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Re: Carter WDO 351S
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Hello, thanks for your questions. The Carb has WDO on it, the linkage is on the right side, (passenger side). There is no ID tag on it. You're correct the starter would not engage with the key off.
OK, with that all answered, I did more reading using the Packard owner's manuals found here. I checked 47- 53. They pretty much say the same as mine says. Only push the peddle down far enough to engage the starter. This makes sense because my owner's manual states. " The throttle linkage is so designed that the choke is opened when the accelerator pedal is pressed to the floor." The Choke: Currently the choke valve has not been set. It is open. when moving the throttle linkage, the fast idle adjusting screw does not contact the fast idle cam or the steps. This all needs to be set up. In my opinion. With the key off, I should be able to press the accelerator pedal to give the engine some fuel and set the choke. Then turn the key on and start the engine. That's how it's been with any carbureted engine I've ever had, and I've had a lot over the years.
Posted on: 2021/12/14 9:37
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Re: Carter WDO 351S
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According to my Packard manuals/info the
23rd series super 8 engine used a Carter WDO643SA. The custom 8 engine used a Carter WDO 531.
Posted on: 2021/12/14 9:39
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Re: Carter WDO 351S
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Forum Ambassador
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In my opinion. With the key off, I should be able to press the accelerator pedal to give the engine some fuel and set the choke. Then turn the key on and start the engine. That's how it's been with any carbureted engine I've ever had, and I've had a lot over the years. That is correct and the way the car would have operated after Packard started using the accelerator pedal start on some models in the early 40s. If it cranks with the key off there is some kind of issue with the wiring -- most likely the starter circuit has been bypassed in some fashion or is active all the time because it is powered from an incorrect location.
Posted on: 2021/12/14 10:10
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Howard
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Re: Carter WDO 351S
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Thank you so much for the Carburetor information. I had written down the 351S code because that was what the service manual had listed for the Super Eight. Now knowing the manual does not cover late 49's or 50's It all makes sense. I'll see what I can find on this model Carter.
Thanks again Dave O
Posted on: 2021/12/14 16:44
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Re: Carter WDO 351S
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Howard: thank you for re-affirming what I considered to be normal operating cold start procedure. I am going to set it up that way. And I will look for another manual. You are all the best!
Sorting out some of these mysteries can be overly confusing at times. Thanks, Dave O
Posted on: 2021/12/14 16:49
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