Judging Standard for 1931 SW Fordor Carb - Question

[mpalilonis]

Can someone tell me what the Judging Standard is for a late 1931 SW Fordor carb? I have seen Zenith 2 carbs with the side mount shut off valve at the carb and others without them (the gas line just goes right into the side of the carb). I am unsure what originally came with my Fordor. See pictures below. Any help would be greatly appreciated!!

[Mike V. Florida]

indented fire wall, second picture.

[Bruce Adams]

Yes to what Mike said, "The Second Image"
BUT
thee is no "Shut Off" at the carb as you say.
The fuel shut off on an indented firewall Model A is on the firewall

[mpalilonis]

Thanks guys... I do not have the indented firewall.

[Brian SATX]

IF you do not have an indented firewall, then the one in the left pciture
is correct. It can Z-1 or Z-2. Some will try to say that there were no flat firewall SW but there were some in the early production run.

[400A-64]

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I have owned two SW Sedans...a 160-A (standard ) and a 160-C Deluxe Fordor... both early SW production with flat firewalls. My 400-A Conv.Sedan also has a flat firewall...early production # 64.
Bruce Davis

[1931 flamingo]

OK, he's looking for correct carb for LATE 31 slant window BUT says he has a flat firewall. Others say early s/windows had flat f/wall. What's he got?? What's he need??
Paul in CT

[Fred]

Originally Posted by 1931 flamingo

OK, he's looking for correct carb for LATE 31 slant window BUT says he has a flat firewall. Others say early s/windows had flat f/wall. What's he got?? What's he need??
Paul in CT

He has stated that it is a FLAT FIREWALL, So its NOT a late 31.. Along with the other carbs listed above, he also can use a Zenith 3..

[Mike V. Florida]

Originally Posted by mpalilonis

Thanks guys... I do not have the indented firewall.

So we can help you better, what month do you think your car was built and why?

[mpalilonis]

The reason I believe it's a late '31 is because the motor number is CAS9506. Which when I look that up on http://www.fordgarage.com/pages/ABenginenumbers.htm tells me it was built in June of '31. Like I said before it does not have the indented firewall, and it's Canadian built so maybe that has something to do with it. I'm new to the A world and appreciate you guys helping me with this. The other number I have is stamped on the cross rail, 15F453.

[Mike V. Florida]

Originally Posted by mpalilonis

The reason I believe it's a late '31 is because the motor number is CAS9506. Which when I look that up on http://www.fordgarage.com/pages/ABenginenumbers.htm tells me it was built in June of '31. Like I said before it does not have the indented firewall, and it's Canadian built so maybe that has something to do with it. I'm new to the A world and appreciate you guys helping me with this. The other number I have is stamped on the cross rail, 15F453.

Late is Sept, Oct, Nov, Dec.

[Fordlane Wayne]

Here is an explination that may help with the discussion. According to the Judging Standards & Restoration Guidelines - under Canadian Model A's; "Canadian manufacturing changes requently occurred at later dates than in the U.S.A. In view of this lag time before changes were actually incorporated into production, whenever a month is stated for the commencement of a change, the earlier configuration will also be acceptable for three months thereafter."


Also, your engine number CAS 9506 is described as; CAS Series produced between April 1, 1931 and June 2, 1931.

I have a March 1931 S/W without the indented firewall and therefore do not use the zenith carburetor with the side-bowl filter mounted on the carburetor.

Use the standard zenith, non-sidebowl carburetor for your car in my opinion.

[Fred]

Originally Posted by Fordlane Wayne

Here is an explination that may help with the discussion. According to the Judging Standards & Restoration Guidelines - under Canadian Model A's; "Canadian manufacturing changes requently occurred at later dates than in the U.S.A. In view of this lag time before changes were actually incorporated into production, whenever a month is stated for the commencement of a change, the earlier configuration will also be acceptable for three months thereafter."


Also, your engine number CAS 9506 is described as; CAS Series produced between April 1, 1931 and June 2, 1931.

I have a March 1931 S/W without the indented firewall and therefore do not use the zenith carburetor with the side-bowl filter mounted on the carburetor.

Use the standard zenith, non-sidebowl carburetor for your car in my opinion.

So he can use a Zenith 1,2 or a 3. But the all have time changes in the housings..

[mpalilonis]

Thanks guys... How do I know what month mine was made in?

[Bick in New Zealand]

Our Canadian friends should have some idea, of the time lag, between engine production and the car leaving the factory. Car sales were not great worldwide in 1931, so could quite conceivably been July, August, September, before it hit the road. Also note that Canadian Cars were never produced with the the indented firewall.

[columbiA]

mpalilonis--I believe your car was built between May 31st & June1st or 2nd of 1931.The CAS series of engines ran from CAS-1 to CAS 10,000.Since your car is late in the CAS series I think the above dates are correct.Also,CDN "A"s didnt use the indented firewall nor the sediment bowl on side of carb.My 31 S/W town sdn has engine #CAS 3827,likely built in late April or early May of 31.

[Bick in New Zealand]

My '31 coupe CA8615 was first sold here Mar.17, 1932.

[Bick in New Zealand]

Try *CAS8615 *!

[mpalilonis]

Interesting about the Canadians not having indented firewalls. I wonder why? Wonder if Canada's regs prevented it.

[columbiA]

I think CDN "A",s didnt have indented firewalls is because the entire production in 1931 was only 30,856 & that included Commercial as well as "AA",s