|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
05-01-2022, 06:49 AM | #1 |
Junior Member
Join Date: Apr 2022
Location: Utah
Posts: 18
|
1930 Model A, but 1932 B Engine
My understanding is that my 1930 2-window Model A (see photo), has a B Engine.
Please explain. Last edited by 1930Ford; 05-01-2022 at 07:52 AM. |
05-01-2022, 07:34 AM | #2 |
Senior Member
Join Date: Jan 2016
Posts: 2,126
|
Re: 1930 Model A, but 1932 B Engine
Please provide photo.
The 32 is probably original but certainly not for your 30. |
Sponsored Links (Register now to hide all advertisements) |
|
05-01-2022, 07:52 AM | #3 |
Junior Member
Join Date: Apr 2022
Location: Utah
Posts: 18
|
Re: 1930 Model A, but 1932 B Engine
Okay - let me edit it by removing reference to the "1932." Don't fully understand a B engine.
|
05-01-2022, 08:09 AM | #4 |
Senior Member
Join Date: Aug 2011
Location: Eagle Bend, MN
Posts: 2,030
|
Re: 1930 Model A, but 1932 B Engine
First thing, a B head has a 3 bolt water pump. A B block has a fuel pump"hole" in the block, usually covered with a plate in an A. Lots of other differences, those are easy to spot from the back of a galloping horse.
__________________
"There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool." |
05-01-2022, 08:22 AM | #5 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,509
|
Re: 1930 Model A, but 1932 B Engine
A lot of updates came with the model B engine. A good part of it was to get 50-horse power from an older type design. The rest of it was a more modern 3-speed semi-synchronized transmission that changed the oil pan and the flywheel cover/bell housing. The model B engine takes modifications in order to install it in the model A. Model B engines serial numbers were stamped on the flywheel housing so the pad near the coolant inlet elbow had no number originally unlike the model A engine block.
|
05-01-2022, 09:11 AM | #6 |
Senior Member
Join Date: May 2010
Location: Long Island, NY
Posts: 3,518
|
Re: 1930 Model A, but 1932 B Engine
Sponsored Links (Register now to hide all advertisements)
>Pressurized oil system to main bearings and camshaft bearings; >Improved camshaft for better breathing; >"B" cylinder head has slightly higher compression ratio, and a Model "A" head fits; >Larger main and connecting rod bearings.
__________________
Bob Bidonde |
05-01-2022, 10:13 AM | #7 |
BANNED
Join Date: Mar 2022
Location: Chenango Bridge NY
Posts: 433
|
Re: 1930 Model A, but 1932 B Engine
And if you get a late 32 and up it has a counterbalanced crankshaft. Most post production engines have hardened exhaust valve seats.. the later B’s also can have a high lift cam,up to .340 actual lift, all B cams have a better profile than the A. The crankshaft has substantially larger journals (2”). The cam and main bearing receive positive flow from the oil pump, it is not a pressurized engine. All in the the “new and improved” 4 cylinder for 32 was a success except for one issue.. it’s far more prone to crackinggenerally from the exhaust valve seat to cylinder on 2 and 3 … which can be repaired by pinning, hard seats and sleeves.
|
05-01-2022, 10:48 AM | #8 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,083
|
Re: 1930 Model A, but 1932 B Engine
Correct me if I'm wrong, but I seem to remember that the B exhaust manifold has a different slope at the back.
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
05-01-2022, 10:57 AM | #9 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,509
|
Re: 1930 Model A, but 1932 B Engine
That manifold is correct for the 1932 model year. In 1933/34 the manifold is almost identical to the model A.
|
05-01-2022, 03:38 PM | #10 |
Senior Member
Join Date: Apr 2011
Location: Milpitas, CA
Posts: 404
|
Re: 1930 Model A, but 1932 B Engine
I would like to clarify some terminology.
The 1930-31 Model A high compression head (5.2 to 1) (A-6050-B) has a large B cast into it. This head uses a 4 bolt Model A water pump. Frequently call a "B" head. The 1932 to 34(?) 4 cylinder block with oil pressure to the mains and a fuel pump mounting on the intake and exhaust side. Frequently called a "B" engine. It used a 5 to 1 compression head with a large C cast in it and a 3 bolt water pump.
__________________
Bill Cilker, Jr Unrestored 190A Victoria 45B, 160B & 189A Victoria Association President |
05-01-2022, 05:52 PM | #11 |
Senior Member
Join Date: Jan 2012
Location: Western North Carolina
Posts: 4,054
|
Re: 1930 Model A, but 1932 B Engine
Also, the B engine has a different distributor with an automatic advance and a different carburetor and intake manifold. Below is a photo of a 1932 B engine. Your B engine may have a Model A exhaust manifold and a Model A distributor and maybe a Model A head.
__________________
A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
05-02-2022, 06:39 AM | #12 |
Senior Member
Join Date: Jan 2012
Location: Western North Carolina
Posts: 4,054
|
Re: 1930 Model A, but 1932 B Engine
Be aware that the front timing gear cover is different on the Model B which can result in the timing not being set correctly if a Model A distributor is used.
__________________
A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
05-02-2022, 07:46 AM | #13 |
Junior Member
Join Date: Dec 2021
Location: Spring Tx
Posts: 26
|
Re: 1930 Model A, but 1932 B Engine
14 degree advance at the normal timing of a model a by using the pin in the timing gear on a B, that's what those centrifugal advance dizzys want for base timing. Model A the timing gear pin drops at 0 degrees.
I am running a B motor myself now, the extra power is very nice. Keep running it and enjoy. The only thing better than a B motor is a Burtz Block at this point for power and strength. A good touring motor is 75 HP and up with good gearing, it will pull hills in 3rd all day. Fun to drive and will outrun your buddies. |
05-02-2022, 08:27 AM | #14 |
Senior Member
Join Date: Jul 2018
Location: Spring Grove, Illinois
Posts: 1,371
|
Re: 1930 Model A, but 1932 B Engine
Mechanically they are superior but a lot of them are cracked, some visibly, some hidden. Cracks are even more of an issue with B blocks than A blocks.
__________________
"The more things change, the more they stay the same." |
05-02-2022, 03:09 PM | #15 | |
Senior Member
Join Date: May 2010
Location: Bucks Co, Pa
Posts: 3,742
|
Quote:
Good Luck! Terry |
|
05-02-2022, 03:34 PM | #16 |
BANNED
Join Date: Mar 2022
Location: Chenango Bridge NY
Posts: 433
|
Re: 1930 Model A, but 1932 B Engine
This Diamond B block has been pinned, sleeved and exhaust seats installed. All quality work and in my experience a crack relieves stress, I am going to build it.
|
05-02-2022, 09:19 PM | #17 |
Senior Member
Join Date: May 2010
Location: Bismarck ND
Posts: 1,189
|
Re: 1930 Model A, but 1932 B Engine
One other thing not mentioned is that the B engine does not have the outside oil return pipe, but a larger valve cover plate with the return line built in.
|
05-02-2022, 11:48 PM | #18 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 1,379
|
Re: 1930 Model A, but 1932 B Engine
The B engine has no internal return line, only a pressurized feed line to the mains and camshaft. The B-engine has oil return via drillings in the valve chamber floor that allow oil to drain into the dipper tray, something Ford should have utilized for the Model A.
|
05-03-2022, 05:35 AM | #19 |
BANNED
Join Date: Mar 2022
Location: Chenango Bridge NY
Posts: 433
|
Re: 1930 Model A, but 1932 B Engine
You can’t drain the valve chamber floor to the dipper tray on an A, you will starve the main bearings and cam bore.
The stock B oil system is not pressurized, it works on flow. |
|
|
Sponsored Links (Register now to hide all advertisements) |
|