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MYSTERY Insulated line
#11
yea the picture is not working. Ive been having that trouble all day. The only way ive been able to make it work is with the QUICK edit. in that mode uploading a picture works, but not in full edit mode.

I did find the choke tube kit on CJ's and NPD. I just cant locate where the manifold end goes.

"I drank what?" - Socrates
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#12
They're just pushed into the exhaust manifold, not a pressed in fit. The tubing keeps itself in place when connected to the choke. They can usually be worked loose if stuck due to rust, penetrating oil and patience, don't work the tubing too much, or it will deform or break. I've had to drill out a broken one more than once. There will also be another tube that is hard line where it's connected to the exhaust manifold, and changes to rubber and is then connected to a fitting on the carburetor. It provides a filtered air source. The choke is connected to a vacuum source internally in the carburetor and pulls heated air in from the exhaust manifold.

There should be a couple of 1/4" holes in the top of the passenger side exhaust manifold, an inch or so apart.

I don't know if they are available, but they're easy enough to make.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#13
(12-31-2018, 07:11 PM)Don C Wrote: " There will also be another tube that is hard line where it's connected to the exhaust manifold, and changes to rubber and is then connected to a fitting on the carburetor. It provides a filtered air source. The choke is connected to a vacuum source internally in the carburetor and pulls heated air in from the exhaust manifold.

There should be a couple of 1/4" holes in the top of the passenger side exhaust manifold, an inch or so apart.

I don't know if they are available, but they're easy enough to make."


That may be what Im missing.  Maybe the tube just hangs there and a rubber hose connects the tube to the manifold stub somewhere.  I will have to get under there tommorow and see if I can see anything.

"I drank what?" - Socrates
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#14
(12-31-2018, 07:04 PM)jowens1126 Wrote: yea the picture is not working.  Ive been having that trouble all day.  The only way ive been able to make it work is with the QUICK edit.  in that mode uploading a picture works, but not in full edit mode.

I did find the choke tube kit on CJ's and NPD.  I just cant locate where the manifold end goes.

[Image: getPart?uid=ANP7THtEGG3_XCqJAgs-6LsmEis&...e=STANDARD]
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#15
I couldn't find exactly what I was looking for online, but these two pictures should give you a good idea of how they were connected.

This one is of an earlier manifold with the tubes connected, but yours should connect the same
[Image: 302-exhaust-manifold-and-choke-tubes.jpg]

This is of a 4-barrel carburetor that shows the heat (insulated) connection to the choke and the fresh air connection to the carburetor air cleaner flange, the 2-barrel connection is the same.
[Image: Choke-tubes.jpg]

It's also possible someone converted your choke to electric, and didn't bother to remove the heated tube after they dropped it.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#16
THANK YOU DON!

Thats exactly what I was looking for.

"I drank what?" - Socrates
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#17
(01-01-2019, 07:13 PM)jowens1126 Wrote: THANK YOU DON!

Thats exactly what I was looking for.

Here a pic of my 1973 302.....

[Image: Red-73-Convertible-Engine-Restoration-d.jpg]

[Image: Red-73-Convertible-Engine-Restoration-b.jpg]

[Image: 20171025-143854.jpg]
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#18
Thanks again for more great pictures. Its so hard to see that area with the strut brace in the way. I guess im going to try to work my phone down in there tomorrow to see if I can snap a pic or 2. You would think with that insulated line disconnected that there would be a hell of an exhaust leak, yet I dont hear any signs of that. Im almost thinking that the manifolds on the passenger side are later model that dont have that on it. But I will have to look closer now that I know what to look for.

"I drank what?" - Socrates
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#19
(01-01-2019, 10:26 PM)jowens1126 Wrote: Thanks again for more great pictures.  Its so hard to see that area with the strut brace in the way.  I guess im going to try to work my phone down in there tomorrow to see if I can snap a pic or 2.  You would think with that insulated line disconnected that there would be a hell of an exhaust leak, yet I dont hear any signs of that.  Im almost thinking that the manifolds on the passenger side are later model that dont have that on it.  But I will have to look closer now that I know what to look for.

As you can see in the picture, both lines ran to the exhaust manifold the top one to the choke and the bottom one to the carb.
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#20
(01-01-2019, 10:26 PM)jowens1126 Wrote: Thanks again for more great pictures.  Its so hard to see that area with the strut brace in the way.  I guess im going to try to work my phone down in there tomorrow to see if I can snap a pic or 2.  You would think with that insulated line disconnected that there would be a hell of an exhaust leak, yet I dont hear any signs of that.  Im almost thinking that the manifolds on the passenger side are later model that dont have that on it.  But I will have to look closer now that I know what to look for.

The tube fits into a closed cavity and is only heated by the exhaust manifold; it does not involve the exhaust gases directly.

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[Image: Flamicon2.jpg]


[Image: oldfart.png]
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