Hi-temp putty?

Jon B

On my '37 (as in many Hudsons) a small-diameter tube runs between the choke stove (screwed to the exhaust manifold) and the automatic choke on the carburetor.



Apparently there is some sort of vacuum within this tubing, because I had been hearing a high-pitched whistling sound from my engine, and when I placed a rag over the connection between the tubing and the choke stove, the whistling stopped! Actually, the tubing fits into a sleeve welded or crimped to the body of the choke stove, and undoubtedly the tubing is loose within this sleeve, allowing the vacuum to suck air out the small resulting gap, thus creating the whistling sound.



A piece of high temperature tape of some type -- or the application of some high temperature putty around the connection -- should put everything to rights. Anyone have a suggestion?

dave s

I think I would try JB Weld

Nevada Hudson

Jon B wrote:

On my '37 (as in many Hudsons) a small-diameter tube runs between the choke stove (screwed to the exhaust manifold) and the automatic choke on the carburetor.



Apparently there is some sort of vacuum within this tubing, because I had been hearing a high-pitched whistling sound from my engine, and when I placed a rag over the connection between the tubing and the choke stove, the whistling stopped! Actually, the tubing fits into a sleeve welded or crimped to the body of the choke stove, and undoubtedly the tubing is loose within this sleeve, allowing the vacuum to suck air out the small resulting gap, thus creating the whistling sound.



A piece of high temperature tape of some type -- or the application of some high temperature putty around the connection -- should put everything to rights. Anyone have a suggestion?

Jon, you have yourself a good Wolf Whistle !

Unknown

Yea, Swage the tubing out to fit the manifold tube. Trouble with using putty is that it can get sucked into the carb and cause havoc with your choke. The reason that you have vacuum on the tube is to pull heated air into the choke to heat up the choke spring. It goes away when the choke is open.. You could also have a bad tube in your manifold, which is replaceable.