The Ford Barn

gilitos · 03-04-2011, 02:05 PM

There's a couple of recent threads related to Webers, Strombergs, dual Strombergs, etc., but to me the look of dual updrafts has always been the stuff. They look like a bargain when you consider the price of the manifold and one or two Tillotsons. I've also heard that they're too much for a stock motor. Who has experience with dual updrafts? Whaddaya think?--Giles in Cincinnati

Dave in MN · 03-04-2011, 02:14 PM

Giles,
I am building an era "hop up" and have a dual updraft manifold with two "B" Zenith carbs set up by Dave Renner @ Renner's Corner. Prior to jetting them, he asked a lot of questions as to my valves, cam, displacement and my expectations of operation. Dave's comment was that the dual set-up was a bit to much carb for my engine with stock jetting. I do have 1.7" intake valves, enlarged intake passages and a .340 lift cam from Bill Stipe.

I have yet to put it on the road but it ran pretty well on the engine stand during break-in. I'll know more this spring.

Good Day!
Dave in MN

Vanspeed · 03-04-2011, 03:51 PM

I would love to see your setup Dave, how are you running the gas lines? Also the choke rod can't be used right?

Charlie Stephens · 03-04-2011, 11:55 PM

Quote:

Originally Posted by Vanspeed

I would love to see your setup Dave, how are you running the gas lines? Also the choke rod can't be used right?

A friend of mine ran 2 updrafts with a Trojan manifold. The guy that set it up (Wes Cooper) said a choke on one carburetor was enough and he was right.

Charlie Stephens

Dave in MN · 03-04-2011, 03:56 PM

Until I get the engine in the car I am not sure how I will plumb it permanent...I just used rubber gasline for the break-in period. I'll put your name in my log and email you something when I get it installed. If I fall behind, I will put the engine in my driver for the summer so I can get it through the full break-in.
Choke rod: Only one carb is used to choke and adjust the mixture to start. The other GAV is set up with a short adjustment fitting that allows you to adjust the mixture...with the hood open.
Dave in MN

31a · 01-01-2022, 12:51 AM

Sponsored Links (Register now to hide all advertisements)

I have a dual updraft manifold and the linkage if interested PM me and we can talk about it

Slantwindshield · 03-04-2011, 04:34 PM

I am running dual Zenith updraft carbs on my Slantwindshield. Tour without any problems, high comp head, lightned f/w, and a Mitchell. Post you e-mail and I will forward pictures. Howard

Chuck Sea/Tac · 12-29-2021, 01:48 PM

Google Charlie yapp secrets of speed

Milton · 03-04-2011, 11:42 PM

My first modification to my 30 sedan back in the fifties was a pair of zeniths and they were great. Just a bit over carbureted but a throttle stop took care of that.

lindy williams · 03-05-2011, 08:20 AM

I'm running two model A zenith carbs side by side. With this set up you can idle one one carb and use the choke rod. It is easy on this installation to design a progressive linkage so that you run on one carb until about 1/2 throttle.

Milton · 03-06-2011, 12:36 AM

Quote:

Originally Posted by lindy williams

I'm running two model A zenith carbs side by side.

This sounds neat, got any pics you can post?

Ronnie Lawson · 03-06-2011, 04:57 PM

I plan on adding this to my 1929 Town Sedan.
Ron
IMG_0103.jpg

Dave in MN · 03-07-2011, 11:59 AM

Quote:

Originally Posted by Ronnie Lawson

I plan on adding this to my 1929 Town Sedan.
Ron
Attachment 34944

Thanks Ron for posting this picture...this setup is exactly what I need to make my system work and the progressive idea from Lindy to kick in the second carb above 1/2 throttle...awesome.
Looks like I'll be putting my other intake from Charlie Yapp on the shelf.
Thanks All!
Dave in MN

hardtimes · 03-07-2011, 02:50 PM

Quote:

Originally Posted by Ronnie Lawson

I plan on adding this to my 1929 Town Sedan.
Ron
Attachment 34944

Ron,
Who makes that 'two in one' gas line setup. Do you send them measurements/drawing of what you want/need what?

shock · 03-09-2011, 04:30 PM

Heres Mine

wardkew · 03-06-2011, 07:49 PM

Ron, who makes that intake??

Ronnie Lawson · 03-07-2011, 09:04 AM

I don't know who made the intake. I bought it at Hershey about 10 years ago.

Ray in La Mesa · 03-07-2011, 09:53 AM

The side by side updraft intake is a stock A intake with a 90 degree ebow braised on with a flange for the outer carb. The article on how to make one is in Vol.! #4 issue (April '92) of SECRETS OF SPEED by Charlie Yapp. I made the one on my pickup about 15 years ago and it is fantastic.

Davidpgh1 · 12-29-2021, 12:22 AM

Greetings. I came across RAY IN COSA MESA's old post dated March 7, 2011 (#13):

"The side by side updraft intake is a stock A intake with a 90 degree elbow braised on with a flange for the outer carb. The article on how to make one is in Vol.! #4 issue (April '92) of SECRETS OF SPEED by Charlie Yapp. I made the one on my pickup about 15 years ago and it is fantastic."

Any idea where I could obtain a copy of volume #4 of Secrets of Speed?

Regards,

David
[email protected]

updraught · 12-29-2021, 07:53 PM

Quote:

Originally Posted by Davidpgh1

Any idea where I could obtain a copy of volume #4 of Secrets of Speed?
Regards,
David
[email protected]

Volume one no's 1-4 were reprinted as a "best of" and "may" be available. Otherwise you can get a PDF version here.
https://www.secretsofspeed.com/soss-index

03-04-2011, 02:14 PM	#2
Dave in MN Senior Member Join Date: May 2010 Location: Jordan, MN Posts: 1,411	Re: Dual updraft carburetors Giles, I am building an era "hop up" and have a dual updraft manifold with two "B" Zenith carbs set up by Dave Renner @ Renner's Corner. Prior to jetting them, he asked a lot of questions as to my valves, cam, displacement and my expectations of operation. Dave's comment was that the dual set-up was a bit to much carb for my engine with stock jetting. I do have 1.7" intake valves, enlarged intake passages and a .340 lift cam from Bill Stipe. I have yet to put it on the road but it ran pretty well on the engine stand during break-in. I'll know more this spring. Good Day! Dave in MN

03-04-2011, 03:51 PM	#3
Vanspeed Senior Member Join Date: May 2010 Location: Suttons Bay, Mich. Posts: 3,390	Re: Dual updraft carburetors I would love to see your setup Dave, how are you running the gas lines? Also the choke rod can't be used right? __________________ *Respecting and Resurrecting Ford Model A's.*

03-04-2011, 03:56 PM	#5
Dave in MN Senior Member Join Date: May 2010 Location: Jordan, MN Posts: 1,411	Re: Dual updraft carburetors Until I get the engine in the car I am not sure how I will plumb it permanent...I just used rubber gasline for the break-in period. I'll put your name in my log and email you something when I get it installed. If I fall behind, I will put the engine in my driver for the summer so I can get it through the full break-in. Choke rod: Only one carb is used to choke and adjust the mixture to start. The other GAV is set up with a short adjustment fitting that allows you to adjust the mixture...with the hood open. Dave in MN

01-01-2022, 12:51 AM	#6
31a Senior Member Join Date: Jun 2010 Location: College Station, Tx Posts: 326	Re: Dual updraft carburetors Sponsored Links (Register now to hide all advertisements) I have a dual updraft manifold and the linkage if interested PM me and we can talk about it

03-04-2011, 04:34 PM	#7
Slantwindshield Senior Member Join Date: May 2010 Posts: 265	Re: Dual updraft carburetors I am running dual Zenith updraft carbs on my Slantwindshield. Tour without any problems, high comp head, lightned f/w, and a Mitchell. Post you e-mail and I will forward pictures. Howard

03-04-2011, 02:05 PM	#1
gilitos Senior Member Join Date: May 2010 Location: Cincinnati, OH Posts: 209	Dual updraft carburetors There's a couple of recent threads related to Webers, Strombergs, dual Strombergs, etc., but to me the look of dual updrafts has always been the stuff. They look like a bargain when you consider the price of the manifold and one or two Tillotsons. I've also heard that they're too much for a stock motor. Who has experience with dual updrafts? Whaddaya think?--Giles in Cincinnati

12-29-2021, 01:48 PM	#8
Chuck Sea/Tac Senior Member Join Date: May 2010 Location: Between Seattle & Tacoma Posts: 2,355	Re: Dual updraft carburetors Google Charlie yapp secrets of speed

03-04-2011, 11:42 PM	#9
Milton Senior Member Join Date: Oct 2010 Posts: 837	Re: Dual updraft carburetors My first modification to my 30 sedan back in the fifties was a pair of zeniths and they were great. Just a bit over carbureted but a throttle stop took care of that.

03-05-2011, 08:20 AM	#10
lindy williams Senior Member Join Date: May 2010 Posts: 335	Re: Dual updraft carburetors I'm running two model A zenith carbs side by side. With this set up you can idle one one carb and use the choke rod. It is easy on this installation to design a progressive linkage so that you run on one carb until about 1/2 throttle.

03-06-2011, 04:57 PM	#12
Ronnie Lawson Senior Member Join Date: May 2010 Location: Columbus, IN Posts: 158	Re: Dual updraft carburetors I plan on adding this to my 1929 Town Sedan. Ron IMG_0103.jpg

03-09-2011, 04:30 PM	#15
shock Junior Member Join Date: May 2010 Posts: 5	Re: Dual updraft carburetors Heres Mine

03-06-2011, 07:49 PM	#16
wardkew Member Join Date: May 2010 Location: Downeast Maine Posts: 78	Re: Dual updraft carburetors Ron, who makes that intake??

03-07-2011, 09:04 AM	#17
Ronnie Lawson Senior Member Join Date: May 2010 Location: Columbus, IN Posts: 158	Re: Dual updraft carburetors I don't know who made the intake. I bought it at Hershey about 10 years ago.

03-07-2011, 09:53 AM	#18
Ray in La Mesa Senior Member Join Date: May 2010 Location: La Mesa Ca Posts: 1,168	Re: Dual updraft carburetors The side by side updraft intake is a stock A intake with a 90 degree ebow braised on with a flange for the outer carb. The article on how to make one is in Vol.! #4 issue (April '92) of SECRETS OF SPEED by Charlie Yapp. I made the one on my pickup about 15 years ago and it is fantastic.

12-29-2021, 12:22 AM	#19
Davidpgh1 Junior Member Join Date: Dec 2021 Posts: 1	Re: Dual updraft carburetors Greetings. I came across RAY IN COSA MESA's old post dated March 7, 2011 (#13): "The side by side updraft intake is a stock A intake with a 90 degree elbow braised on with a flange for the outer carb. The article on how to make one is in Vol.! #4 issue (April '92) of SECRETS OF SPEED by Charlie Yapp. I made the one on my pickup about 15 years ago and it is fantastic." Any idea where I could obtain a copy of volume #4 of Secrets of Speed? Regards, David [email protected]