Author Topic: 1969 351w choke tubes  (Read 315 times)

Offline 1969 Cale II

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1969 351w choke tubes
« on: June 15, 2017, 10:34:11 PM »
Is my carb missing something? The metal tube that comes from the bottom of the exhaust manifold to a vacuum source? Where does the rubber hose attach to? Metal tube to what? My car came in pieces (ever here that, ya right) so I don't really know where it goes. To the tee on the back of the intake manifold?
Thanks Chris

Offline krelboyne

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Re: 1969 351w choke tubes
« Reply #1 on: June 19, 2017, 12:34:55 PM »
Steel tube to the exhaust manifold.
Scott Behncke - Carcheaologist
West Coast Classic Cougars
503-463-1130
1968 GT/CS 302-4V San Jose 05B
1968 Cougar XR7 Dearborn 09A

Offline jwc66k

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Re: 1969 351w choke tubes
« Reply #2 on: June 19, 2017, 04:21:37 PM »
Is my carb missing something? The metal tube that comes from the bottom of the exhaust manifold to a vacuum source? Where does the rubber hose attach to? Metal tube to what? My car came in pieces (ever here that, ya right) so I don't really know where it goes. To the tee on the back of the intake manifold?
Thanks Chris
Steel tube to the exhaust manifold.
Typically, you draw clean air from the air cleaner thru a rubber hose at the edge of the carburetor, down to the manifold with a short steel tube, thru the manifold heating chamber, into an insulated steel tube up to the choke. The air is drawn via a vacuum generated by a small port in the primary (for a 4V) venturi in the carburetor.
(Thus endith the lesson for today.)
Jim
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline J_Speegle

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Re: 1969 351w choke tubes
« Reply #3 on: June 19, 2017, 05:00:20 PM »
Is my carb missing something?

Don't know :)


Chris is this for a 4300 (4V) or a 2V application??
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline 1969 Cale II

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Re: 1969 351w choke tubes
« Reply #4 on: June 19, 2017, 10:41:10 PM »
It appears that I am missing the short metal tube at the back of the carb were the rubber hose goes. It is a 4300 4v, it is not the one that came with my car. Mine is an auto, are stick cars different?

Offline jwc66k

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Re: 1969 351w choke tubes
« Reply #5 on: June 19, 2017, 11:27:00 PM »
They should be the same.
Jim
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline J_Speegle

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Re: 1969 351w choke tubes
« Reply #6 on: June 20, 2017, 12:07:34 AM »
It appears that I am missing the short metal tube at the back of the carb were the rubber hose goes. It is a 4300 4v, it is not the one that came with my car. Mine is an auto, are stick cars different?

Don't believe they are different in this feature but thanks for including the information just in case it was needed to answer your question


Yes there are two tubes that come up (attached to) the passenger side exhaust manifold. One goes directly (screws on ) with a fitting while the other goes to the rear of the carb body just below the air cleaner flange. This connection between the steel tube and the carb is made with a short section of rubber hose with maybe a 1/4" ID . Other 4300s from other years and applications use a much smaller dia hose





Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline 1969 Cale II

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Re: 1969 351w choke tubes
« Reply #7 on: June 25, 2017, 09:49:05 PM »
Thanks, just what I needed to know.

Offline J_Speegle

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Re: 1969 351w choke tubes
« Reply #8 on: June 25, 2017, 10:36:05 PM »
Thanks, just what I needed to know.

That's what were here for  8)
Jeff Speegle

Anything worth doing is worth doing concours ;)