where to buy 320 intake manifold check valve

[B.Liesberg]

I've found that I have a few induction leaks, I think the elbow shaped check valve right under the carb is part of the problem (sorry I don't know the correct term for it). Does anyone know where I can find a new or NOS one of these? Or is there a replacement part that works just as well?

[billorn]

Can you show us a picture? I dont think theres a check valve of any kind. Are you talking about the exhaust heat riser? The vacuum line? What year? More detail will get you a better solution.

[DonMicheletti]

Good sketch on page 139, Fig.6-47 in the shop manual for the '38

[B.Liesberg]

I assumed the 320's were mostly the same. But it's a 39.

 

 

Here is the valve

 

 

And it attaches where that little brass plug is

 

 

It's some sort of drain for gasoline or other liquids in the intake manifold. I assume it drains anything in there whenever the engine is shut down. I've just rebuilt the carb and replaced that valve with the brass plug seen in the second picture.

[MCHinson]

I am not aware of anyone reproducing them. I have never seen one that could not be cleaned up and reused without an issue. It should have a tube that attaches to it that drains any gas down below the exhaust system for safety.

[B.Liesberg]

It does have the tube, but it's hard to attach it to the car without the elbow also being attached 

[DonMicheletti]

There is also a small bracket on a p-anj bolt that the tube goes through to hold the tube in place.

If you ahve one, a soak in lacquer thinner should clean it up.

With the throttle starter, it helps prevent flooding.

[B.Liesberg]

[MCHinson]

I would soak the elbow in solvent to free up the checkvalve ball and after cleaning and drying it, simply reinstall it. I doubt it will cause a problem. There is not much about it that is likely to fail that a little bit of solvent won't fix. 

[Larry Schramm]

Lacquer thinner works well.