The Ford Barn

JD 1931 · 12-03-2014, 09:02 PM

I am rebuilding a early '28 carb that was meant to be a double venturi but it is missing. Can a single venturi be used and will it still perform well? The jets are in line and are close together.

Rowdy · 12-03-2014, 10:07 PM

The correct venturi is sold by most suppliers. It might run with the later one, but I would bet it would not run well. Rod

jmeckel · 12-03-2014, 10:13 PM

I use the correct part, here is the info from Synders, others sell them also.
Double Venturi

The double venturi was used on the early Zenith carburetors. U.S.A.
Part NumberSpecificsPrice A-9586-AR1928$32.00 / ea.

Return to the product list

Tom Endy · 12-04-2014, 02:31 AM

Your Zenith should have a little pin installed on one side where the double venture mounts. Often they have been ground off to accommodate the single venture. The double venture has slots in it the pin goes into to prevent the venture from rotating.

Tom Endy

johnbuckley · 12-04-2014, 04:12 AM

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Quote:

Originally Posted by JD 1931

I am rebuilding a early '28 carb that was meant to be a double venturi but it is missing. Can a single venturi be used and will it still perform well? The jets are in line and are close together.

I have used a single venturi in such a carb- it runs reasonably well except for a slight initial hesitation when accelerating- acceptable in normal usage but a double venturi would be better.

12-03-2014, 09:02 PM	#1
JD 1931 Senior Member Join Date: Jul 2010 Location: west coast Fla.. Posts: 311	Double venturi I am rebuilding a early '28 carb that was meant to be a double venturi but it is missing. Can a single venturi be used and will it still perform well? The jets are in line and are close together.

12-03-2014, 10:07 PM	#2
Rowdy BANNED Join Date: May 2010 Location: Gothenburg Nebraska Just off I-80 Posts: 4,893	Re: Double venturi The correct venturi is sold by most suppliers. It might run with the later one, but I would bet it would not run well. Rod __________________ Do the RIGHT thing - Support the H.A.M.B. Alliance!!!!

12-03-2014, 10:13 PM	#3
jmeckel Senior Member Join Date: Sep 2011 Location: Luck WI Posts: 550	Re: Double venturi I use the correct part, here is the info from Synders, others sell them also. Double Venturi The double venturi was used on the early Zenith carburetors. U.S.A. Part NumberSpecificsPrice A-9586-AR1928$32.00 / ea. Return to the product list __________________ Jon "If you choose to not decide, you still have made a choice!" RUSH Don't tell me what you know..... Tell me what you have done.

12-04-2014, 02:31 AM	#4
Tom Endy Senior Member Join Date: May 2010 Location: Southern California Posts: 3,131	Re: Double venturi Your Zenith should have a little pin installed on one side where the double venture mounts. Often they have been ground off to accommodate the single venture. The double venture has slots in it the pin goes into to prevent the venture from rotating. Tom Endy