The Ford Barn

hardtimes · 10-16-2017, 01:21 PM

Did Ford ever make a carb with an inter-changeable (smaller/larger) venture / throat ?

Brian T · 10-16-2017, 01:56 PM

Hi Rick,
The only one I know of is the Zenith B which could have 2 sizes of venturi, normally 22 MM for the B engine and a 20 MM if using the B carburetor on the A engine which had the smaller intake manifold, the carburetor bores were the same size --- OK what are you dreaming up now, LOL.

johnbuckley · 10-16-2017, 03:04 PM

the zenith carb for the small bore engine had a narrower throat ( about 19mm dia) on the venturi.

hardtimes · 10-17-2017, 12:45 PM

Quote:

Originally Posted by Brian T

Hi Rick,
The only one I know of is the Zenith B which could have 2 sizes of venturi, normally 22 MM for the B engine and a 20 MM if using the B carburetor on the A engine which had the smaller intake manifold, the carburetor bores were the same size --- OK what are you dreaming up now, LOL.

Hey Brian,
Thanks ! You know how 'dreams' are, eh....you wake up ....just before the important part/solution is revealed

!
At the time, I thought/felt that the idea was important somehow and that I was compelled to ask. Maybe a good idea would be removable/changeable such part to change performance of any carb ?

Crazy huh ? Well the real thoughts are even worse

ursus · 10-18-2017, 01:09 PM

Zenith made a variety of venturi sizes for the B carburetor. This was probably because many were used on stationary industrial engines. Some years ago there was a fellow selling off new Zenith A and B parts on eBay. He had one each of sizes 17, 19, 20, 22, 23, 24, and 26 for the B-type carb. There was a flurry of bids on the larger sizes and I mistakenly bid on the 17. I still have it and had a notion to install it just for the inspection if my area ever imposed annual emissions tests on vehicles.

hardtimes · 10-19-2017, 02:01 PM

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Quote:

Originally Posted by ursus

Zenith made a variety of venturi sizes for the B carburetor. This was probably because many were used on stationary industrial engines. Some years ago there was a fellow selling off new Zenith A and B parts on eBay. He had one each of sizes 17, 19, 20, 22, 23, 24, and 26 for the B-type carb. There was a flurry of bids on the larger sizes and I mistakenly bid on the 17. I still have it and had a notion to install it just for the inspection if my area ever imposed annual emissions tests on vehicles.

Thanks good/interesting information never known !
question:
Is the 17 smaller size, 26 bigger size ?
And, is each carb ID somehow with size ?

10-16-2017, 01:21 PM	#1
hardtimes Senior Member Join Date: May 2010 Location: South California Posts: 6,190	carb Q... Did Ford ever make a carb with an inter-changeable (smaller/larger) venture / throat ?

10-16-2017, 01:56 PM	#2
Brian T Senior Member Join Date: May 2010 Location: San Diego,Ca Posts: 1,377	Re: carb Q... Hi Rick, The only one I know of is the Zenith B which could have 2 sizes of venturi, normally 22 MM for the B engine and a 20 MM if using the B carburetor on the A engine which had the smaller intake manifold, the carburetor bores were the same size --- OK what are you dreaming up now, LOL. __________________ Nothing can be made foolproof, ---- fools are ingenious bastards. Last edited by Brian T; 10-16-2017 at 01:58 PM. Reason: Added text

10-16-2017, 03:04 PM	#3
johnbuckley Senior Member Join Date: Jul 2010 Location: United Kingdom Posts: 1,557	Re: carb Q... the zenith carb for the small bore engine had a narrower throat ( about 19mm dia) on the venturi. Last edited by johnbuckley; 10-16-2017 at 04:34 PM.

10-18-2017, 01:09 PM	#5
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,462	Re: carb Q... Zenith made a variety of venturi sizes for the B carburetor. This was probably because many were used on stationary industrial engines. Some years ago there was a fellow selling off new Zenith A and B parts on eBay. He had one each of sizes 17, 19, 20, 22, 23, 24, and 26 for the B-type carb. There was a flurry of bids on the larger sizes and I mistakenly bid on the 17. I still have it and had a notion to install it just for the inspection if my area ever imposed annual emissions tests on vehicles.