I'm in the process of setting up one of CarbsOnly Elect. choke on a Stromberg 2 barrel..
This carb runs parallel to the cylinders so it is not a plug and play situation.

I welded a 1/2" plate over the "open to exhaust" choke pocket and tapped it with 2 mounting threads.

I've slotted the base of the choke mounting plate and fabbed a linkage plate on the carb to accomodate the pull off rod.
Now it is time to drill a hole in the plate for the rod.

It seems as though I can either drill it to where the choke butterfly is either fully closed at cold or fully open at hot, but not both.

I'm wondering if the plate I welded over the choke pocket has thrown things off a bit.

My thinking tells me it is better to have it fully open at hot and not as critical to have it fully closed at cold.

Am I thinking clearly?

It was a long day of grinding/shaping and drilling.

Maybe after sleeping on it I'll have a different perspective on it tomorrow but would sure like to get someone elses take on it.

Thanks.

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Super Six Conversion Stromberg

No—it needs to close fully when cold and open fully when hot.

½" is very thick for that blockoff plate. 1/8" is fine, or ¼" if that's all you can find. Wait…you welded the plate on? Oog. That's going to make things more difficult to fix, at least until the steel-to-cast-iron weld cracks off.

You may wind up making (bending up) a new choke pushrod (from choke thermostat to choke lever) out of brass rod; that's what I've done in the past to get around these kinds of difficulties.

Not sure why you would have needed to modify the choke pull-off.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Yes. Per DD's manifold mod. article, welded the cut off front runners and choke pocket . Used MIG and it took the weld quite nicely.
Not sure how to take this comment. Is that an absolute? Or just a prediction based on odds?

I'll stare/move/stare some more at the stock pull off linkage but I'm pretty sure, at least before I have my coffee, that the pull off (now located at the front of the carb) wants to be pulled off in an "up" motion rather than down.

If I am completely wrong about the stock pull off linkage on that carb, then I am faced with fabricating a mounting location somewhere near the # 3 exhaust runner.

Thanks for the input Dan.

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Super Six Conversion Stromberg

I wasn't predicting your plate will come off, it's just that steel->iron welds can crack off and fail.

If you left the carb's stock choke lever intact, I still can't figure out why you would need to do anything to/with the choke pull-off.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Stromberg WW with the throttle plates parallel to the cylinders. Stock pull off linkage, now at the front (radiator side) of the motor, wants upward movement. I'll shoot a pic later and post it.

Thanks Dan, and have a great Sunday!

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Super Six Conversion Stromberg

If you mounted the carb throttle bores parallel to the cylinders and the choke linkage is towards the radiator, then you are pretty much on your own trying to fabricate an automatic choke pulloff. No factory linkage operated that way.

Here is the carbsonly kit on my brother's van (It's a Holley 2280):

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Casually looking for a Clifford hyperpak intake for cheap.

Nice work Reed.

Now rotate that carb 90* counter clockwise and you will see where I am at with mine.

What I have done is fabricate a new link that ties the choke butterfly and high idle cam together....which now sits on the firewall (rear) side of the motor.

By enlarging that link, I now have some area to drill for the pull off rod.

But like I said in the initial post, I haven't quite figured out how to get full choke on and full choke off. We're talking fractions of an inch here.

Oh well, new day....clear head. Got some yardwork to do and then I'll sit down with it and see what I can do.

And since I am employed with the Office of Education, I GOT THE WHOLE WEEK OFF for spring break to play with it. yah baby!

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Super Six Conversion Stromberg

Can't figure out why everyone is talking incessantly about the choke pull-off. That's the vacuum pod mounted on the carburetor, with a vacuum hose running to it, which cracks the choke plate open when the engine starts. What needs mounting and modification is the choke thermostat and its pushrod. The choke pull-off doesn't know or care which way the carburetor is turned, or what the rod looks like that pushes the choke closed.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

My failure for not using the proper nomenclature.

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Super Six Conversion Stromberg

Sorry. I meant the "electrically assisted choke thermostatic coil spring pulloff assembly" from CarbsOnly.

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Casually looking for a Clifford hyperpak intake for cheap.

No…you don't. The electric choke kit still does not include or affect the choke pull-off.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Persnickety

nice pics, Reed

But if the electrically assisted thermostatic coil spring does not pull the choke open or push it shut, what is it for and how does it work?

The vacuum operated choke pulloff opens the choke the first little bit, but what opens it the rest of the way and what pushes it closed?

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Casually looking for a Clifford hyperpak intake for cheap.

Well, if I were you, I would look for one of the Stromberg WWs from, I think old Chryslers that had a hot air choke on the base casting.

Have the throttle body/base casting re-bushed and add the linkage of your choice, then remove the hot air choke housing and add an Edelbrock electric choke conversion in it's place. Use the rest of the parts from your current WW.

Use the timer/control from your electric choke setup and viola, a stromberg WW with electric choke that works.

Actually if I was you I would toss that crappy Stomberg and get a 'real' carb, by which I mean pretty much any other 2bbl. I hated the one on my D200 and just recently tossed it. Best thing I ever did for driveability.

Choke thermostats, electric or non-, do not pull the choke open.
If the choke thermostat does not push the choke shut, then it is faulty.
Airflow against the choke plate. That's why the choke plate is mounted off-center on the choke shaft, so that air flowing past the plate tends to push the plate open.
The choke thermostat.

It looks to me as though you are making this harder to understand than it actually is. I'm not sure why; you don't normally have slow days at your office, Reed.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.