The Ford Barn

ursus · 02-11-2023, 09:59 PM

I am working through a 5 gallon bucket of Model B carburetors accumulated over the years and surprised at the variations that deviate from what I thought was original. This includes:

B-1 upper castings mated to B-2 lower castings, some with round floats and some with rectangular floats. Some lower castings have a shelf in the float bowl and some do not, such that round floats are suspended in float bowls with a shelf and rectangular floats are suspended in a float bowl with no shelf.

What is correct for these carbs as originally produced, i.e. B-1 carbs with round float and pinhole idle port versus B-2 carbs with rectangular float and slotted idle port and the subsequent variations throughout the post Model B era. Or, does any of this matter and a mix-and-match mating of castings is OK?

Ed in Maine · 02-12-2023, 11:30 AM

You need to get the excellent manual "Restoring The Model "A" and "B" Carburetors - The "Rex" Reheis Way". It covers carburetor design, operation, jet flow data and repair tools. Ed

ursus · 02-12-2023, 11:48 AM

Quote:

Originally Posted by Ed in Maine

You need to get the excellent manual "Restoring The Model "A" and "B" Carburetors - The "Rex" Reheis Way". It covers carburetor design, operation, jet flow data and repair tools. Ed

I have that book. While it covers the “A” carbs in great detail, there isn’t much regarding the changes to the “B” carbs during their evolution during the ‘30’s. The Ford Model A and B Garage website has some excellent info regarding “B” carbs but details of the lower casting are missing.

What I’m looking for is information about the functional compatibility of the upper and lower castings and floats.

Oldgearz · 02-13-2023, 02:04 PM

Sponsored Links (Register now to hide all advertisements)

Search for info on RennersCorners web site. They are expert on B's and have free info sheets and pictures they can send via e-mail.

02-11-2023, 09:59 PM	#1
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,375	Model B Carburetor Details I am working through a 5 gallon bucket of Model B carburetors accumulated over the years and surprised at the variations that deviate from what I thought was original. This includes: B-1 upper castings mated to B-2 lower castings, some with round floats and some with rectangular floats. Some lower castings have a shelf in the float bowl and some do not, such that round floats are suspended in float bowls with a shelf and rectangular floats are suspended in a float bowl with no shelf. What is correct for these carbs as originally produced, i.e. B-1 carbs with round float and pinhole idle port versus B-2 carbs with rectangular float and slotted idle port and the subsequent variations throughout the post Model B era. Or, does any of this matter and a mix-and-match mating of castings is OK?

02-12-2023, 11:30 AM	#2
Ed in Maine Senior Member Join Date: May 2010 Location: Washington Cty., ME or Flagler Cty., FL Posts: 1,106	Re: Model B Carburetor Details You need to get the excellent manual "Restoring The Model "A" and "B" Carburetors - The "Rex" Reheis Way". It covers carburetor design, operation, jet flow data and repair tools. Ed

02-13-2023, 02:04 PM	#4
Oldgearz Senior Member Join Date: Aug 2020 Location: Sagle, Idaho Posts: 359	Re: Model B Carburetor Details Sponsored Links (Register now to hide all advertisements) Search for info on RennersCorners web site. They are expert on B's and have free info sheets and pictures they can send via e-mail.