Carburetor Jets: Stromberg

[Padre4art]

I’ve been rebuilding my Stromberg WWC carburetor for my 1964 Newport 361 engine to solve a very rich running condition.

To get ready, I ordered replacement jets in the correct size from ‘Quadrajet Parts’, and a special removal tool. They do list jets for this carburetor.

Long story short, once I opened up the carb, surprise! See the photos.

Cannot find a source for the correct jet type. Any ideas?

Thanks to other posts, I suspected the vacuum power valve was causing the rich condition. So after cleaning and regasketing, problem solved!

Still curious about jets, though. Interchange with other carb manufacturers?

Thanks

Art

 

[Lefty71]

I would shoot that pic and question to the guy you just bought the jets from. Might be the most economical solution.

 

[CBODY67]

Special Removal Tool? When I was dealing my '66 WWC3 for the '66 Newport, I just used a wide-blade screwdriver, carefully. No problems.

Not sure why you need new jets of the OEM size? Normally, unless somebody has drilled them out, they do not enlarge with age and use.

Did you check the idle circuit air bleeds? Or the main system air bleeds for obstructions? Reason I ask is that when those bleeds and circuits get "accumulations" in them, partially blocking them, the circuits go full rich, or in that direction, from normal calibrations. Carb cleaner and soak will NOT remove those hard deposits, so "mechanical methods" are needed. Check the FSM for the location of those bleeds in their illustrations.

The OTHER thing is . . . did you check the flatness of the air horn in the power piston area? In this area, the over-torque of the air cleaner wing nut will, over time, pull upward and warp the casting. When that happens, the vac to the power piston is lost. Which means the power valve is working all of the time. 12mpg at best. Happened to us! I managed to make some spacer gaskets to fill the gap. During warmup, especially in colder weather, the closed choke plate would orchestrate the pulling of raw fuel over the rear of the float bowl into the venturis. Didn't run too well until the engine got hot enough to open the choke more. Been there, done that.

Otherwise, a good design carburetor. Only thing better might be a Rochester 2bbl, I believe, although I replaced the WWC3 with a Holley 2210. The Holley has the same air cleaner wing nut problem, but Chrysler issued a TSB and repair parts to address that issue.

The top two items in the picture, where did they come from?

Just my experiences,
CBODY67

 

[darth_linux]

Special Removal Tool? When I was dealing my '66 WWC3 for the '66 Newport, I just used a wide-blade screwdriver, carefully. No problems.

Not sure why you need new jets of the OEM size? Normally, unless somebody has drilled them out, they do not enlarge with age and use.

Did you check the idle circuit air bleeds? Or the main system air bleeds for obstructions? Reason I ask is that when those bleeds and circuits get "accumulations" in them, partially blocking them, the circuits go full rich, or in that direction, from normal calibrations. Carb cleaner and soak will NOT remove those hard deposits, so "mechanical methods" are needed. Check the FSM for the location of those bleeds in their illustrations.

The OTHER thing is . . . did you check the flatness of the air horn in the power piston area? In this area, the over-torque of the air cleaner wing nut will, over time, pull upward and warp the casting. When that happens, the vac to the power piston is lost. Which means the power valve is working all of the time. 12mpg at best. Happened to us! I managed to make some spacer gaskets to fill the gap. During warmup, especially in colder weather, the closed choke plate would orchestrate the pulling of raw fuel over the rear of the float bowl into the venturis. Didn't run too well until the engine got hot enough to open the choke more. Been there, done that.

Otherwise, a good design carburetor. Only thing better might be a Rochester 2bbl, I believe, although I replaced the WWC3 with a Holley 2210. The Holley has the same air cleaner wing nut problem, but Chrysler issued a TSB and repair parts to address that issue.

The top two items in the picture, where did they come from?

Just my experiences,
CBODY67

He got them here - WW Jets - Carburetor Parts & Kits for Carter, Ford Motorcraft, Holley & Rochester Carburetors

 

[Padre4art]

That is correct, I got the shiny new jets from Quadrajet Parts company. But they are not right, even though they were listed for a Stromberg WWC carburetor.

Yes, I think sludge and a vacuum leak caused the power valve to be on all the time.

Still would like to know where to find correct jets!

Thanks everyone!

Art

 

[CBODY67]

IF the air bleeds are internally blocked/restricted, it is NOT sludge, but hard deposits. The power valve being on will not cause the issues you have.

@darth_linux has bought jets from the link he posted. Apparently they are correct.

CBODY67

 

[darth_linux]

IF the air bleeds are internally blocked/restricted, it is NOT sludge, but hard deposits. The power valve being on will not cause the issues you have.

@darth_linux has bought jets from the link he posted. Apparently they are correct.

CBODY67

actually, I have not. I was thinking of buying them, haven't gotten around to it. Apparently I don't need to waste my time/money . . .