The Stovebolt Site Forums The Shop Area Engine Shop offenhauser dual carb

working on a 48 chevy that came to me with an offenhauser with dual one barrels.i'm hoping to find a linkage diagram to help sep up the choke's. any help is appreciated, thanks.

You really only to choke one carb. I just ran the choke cable from the dash to the rear carb. I know I don't live where it gets real cold but I've never heard of anyone needing to choke both carbs.

George

Using a choke on a single carb (original Rochesters), as described by George, worked fine for me. Take out the choke plate from the carb not being choked.

Tim

To each his own way of thinking.

Don't have a 6 at present; but have chokes on both carbs on my V-8. Works great, and will start (and run) in any temperature from -20 to 110. It is my shop truck, and sees winter driving.

Jon.

I have the choke on one carb. I am not happy with it. It doesn't seem to work as well as when I manually set both. As such, I have been too lazy and too busy to make them both operate. It does get cold up here.

I am using one choke on my dual Carter W1 carbs, the rear one and it seems to work well.

thank you all, as it turns out there is a clamp mounted on the side of the rear carb for the choke cable, it was an easy hook up and cold starting has greatly improved. can you tell me what is the advantage of now removing the choke flap from the front carb?

thanks again,
quigs

Om mine, I just locked the choke open.

Locking the unused choke flap open works fine. Removing the flap works fine (and there is never a concern that the flap might accidentally close even a little bit).

Tim

There is NO advantage to doing this; in fact, it is detrimental on a street engine. The choke plate acts as a straightening vane to straighten the eddy currents in the air which enter the carburetor.

Jon.

Yes, and in addition you want both carbs to be as identical as possible so they both feed the same amount of fuel at any vacuum/throttle position. Removing the choke plate changes that.