Hey Guys,
I found this today. Can this be fixed or should I not worry about it. I’m staying with the original carburetor.
Will it affect the way the car runs if not fixed? Got any idea where to get a new tube assume the machine shop can install a new one. Just a thought, could JBWeld work?
thanks
Curt
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That is the choke tube. The carb automatic choke pulls air through that tube which is heated by hot exhaust gas. The warm air causes the choke to open. That broken tube will allow exhaust gas to be drawn into the carburetor which will not do anything good. JB Weld will not withstand the hot exhaust gas. You can replace the tube . Here is a discussion in the Help section: https://6364cadillac.ning.com/forum/topics/choke-tube?commentId=654...
That choke tube being cracked will allow hot exh gas will allow hot exh gas to be drawn into the choke assembly and gum it up, AND allow hot exh gas to escape out the bottom hole in the intake. That has causes carb fires, so it is a dangerous thing to not fix.
I have the tubes for 15.0 plus shipping. Easy install with instructions. Please send me an email; russ@thecadihack.com
Be sure your fuel lines are sound —as gas and the heat from the broken tube can cause a fire
The temps under hood could be running hotter than normal as that crack is a direct route to the exhaust manifolds HOT exhaust gasses and is leaking those gases now
The crack will often cause the location to get noisier than normal ( hearing the exhaust valves )
The heat is warming the intake manifold to some degree ( pun intended ) which will cause the engine to possibly ——be running a bit leaner and thus hotter than normal
Never really cared for the choke design with the heat tube on my 429 engine myself
Had the butterfly open and disconnected a lot of my ownership
When to an Edelbrock 1406 with an electric choke when the time was right but the intake needs to be removed to be blocking both sides of the heat tubes opening when doing that
Enjoy
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