OLDMAN Posted March 31, 2020 Share Posted March 31, 2020 Can someone tell me where the engine no. is located on the engine of my 1922 Oldsmobile Model 43AT? I have the plaque on the "fire wall" identifying the engine no. , but can not locate the no. on the engine itself. I have located casting numbers, but no engine no. Thank you, OLDMAN Link to comment Share on other sites More sharing options...
Guest Posted March 31, 2020 Share Posted March 31, 2020 Since this engine is very similar to the '22 Chevrolet is it possible the engine numbers are in the same place? Link to comment Share on other sites More sharing options...
nzcarnerd Posted March 31, 2020 Share Posted March 31, 2020 The Standard Catalog information for Oldsmobiles of that era says - 'engine numbers in same location as the serial number' so maybe it is not stamped on the engine? 1 Link to comment Share on other sites More sharing options...
OLDMAN Posted March 31, 2020 Author Share Posted March 31, 2020 nzcarnerd. I quess that it is possible. Thank you Link to comment Share on other sites More sharing options...
OLDMAN Posted March 31, 2020 Author Share Posted March 31, 2020 Tinindian. Yes the engines are pretty much the same. Oldsmobile used the basic engine of the Chevrolet and put their name on the intake manifold plate. Where is the engine number on the 1922 Chevy? Link to comment Share on other sites More sharing options...
nzcarnerd Posted March 31, 2020 Share Posted March 31, 2020 19 minutes ago, OLDMAN said: Tinindian. Yes the engines are pretty much the same. Oldsmobile used the basic engine of the Chevrolet and put their name on the intake manifold plate. Where is the engine number on the 1922 Chevy? I should have thought to look at the '22 Chev info. According to The Standard Catalog the FB Chev engine number is stamped on the flywheel. Link to comment Share on other sites More sharing options...
OLDMAN Posted April 1, 2020 Author Share Posted April 1, 2020 Thank you, I will check my '22 Olds tomorrow. Link to comment Share on other sites More sharing options...
Mark Santos Posted March 23, 2021 Share Posted March 23, 2021 The engine number is located on the front mount left side on top. The engine was made by Mason. The Chevy FB engine was similar, but not the same. If you have any more questions just give me a yell. I'll help you out on your 43A. I have a lot of info. Link to comment Share on other sites More sharing options...
OLDMAN Posted March 23, 2021 Author Share Posted March 23, 2021 Thank you. OLDMAN Link to comment Share on other sites More sharing options...
OLDMAN Posted March 23, 2021 Author Share Posted March 23, 2021 48 year mystery solved thanks to you, Mark. I purchased my 1922 Oldsmobile 43AT in 1973. It came with a spare engine. I long suspected that the spare engine, which has a busted block and a busted cylinder head, was the original engine. The Serial Number Plate on the Dash (firewall) of my car shows Motor No. B17037 and Car No. 16476. The spare engine is set up for 4 point suspension, and the engine in my car has a 3 point suspension. Oldsmobile used the Front Motor Arm for the 4 point suspension up to engine No. B24664. After engine No. B24664, Oldsmobile went to a 3 point suspension. My car is set up for both a 4 point and a 3 point suspension. The 3 point suspension engine does not have the Front Motor Arm. Instead, it has a cast iron Gear Cover which rests on and is bolted to the Front Cross Member of the frame. The Gear Cover for the 4 point suspension is stamped steel. Since the engine in my car does not have the Front Motor Arm, there is no place for the motor number. I was able to find the motor number on the Front Motor Arm of the spare engine right where you showed it in your posting. Thus, proving that the spare engine was the original engine. In the 9 years it took me to restore my car, I could not locate an engine number. Unlike a '22 Chevy, the engine number is not stamped on the fly wheel. Thank you very much, Mark, for solving this mystery and the offer to help me with my 43A. -- OLDMAN (Ross) 1 Link to comment Share on other sites More sharing options...
Ivan Saxton Posted March 23, 2021 Share Posted March 23, 2021 Difference I have seen between Olds and early Chev 4 engines is single exhaust port in the centre of the Chev head, but 3 ports in the Olds head. I suspect that the Olds would have a better arrangement to remove excess exhaust heat from the low compression ratio engine. Bob Schuhkraft showed me remnant of original plaited felt wicks that were intended to gather oil splash within the crankcase ( of his 1912 Chev 4), and assure some lubrication for the crankshaft main bearings. ( The alternative oiling was by "Faith and Hope", which was what T Ford and many others relied on. Link to comment Share on other sites More sharing options...
George Albright Posted March 24, 2021 Share Posted March 24, 2021 I have a 1921-24 olds four cylinder three port head for sale. Nice. Valves installed but only one rocker arm assembly. $800 plus $75 shipping. Photos by email. George albright Ocala Florida. Cell weekdays 10-4 est 352 843 1624. Email. Gnalbright@gmail.com Link to comment Share on other sites More sharing options...
OLDMAN Posted March 24, 2021 Author Share Posted March 24, 2021 Thank you George, but I had mine repaired. OLDMAN Link to comment Share on other sites More sharing options...
George Albright Posted March 24, 2021 Share Posted March 24, 2021 My pleasure. Please share with others Link to comment Share on other sites More sharing options...
OLDMAN Posted March 27, 2022 Author Share Posted March 27, 2022 (edited) On 3/23/2021 at 2:55 PM, OLDMAN said: 48 year mystery solved thanks to you, Mark. I purchased my 1922 Oldsmobile 43AT in 1973. It came with a spare engine. I long suspected that the spare engine, which has a busted block and a busted cylinder head, was the original engine. The Serial Number Plate on the Dash (firewall) of my car shows Motor No. B17037 and Car No. 16476. The spare engine is set up for 4 point suspension, and the engine in my car has a 3 point suspension. Oldsmobile used the Front Motor Arm for the 4 point suspension up to engine No. B24664. After engine No. B24664, Oldsmobile went to a 3 point suspension. My car is set up for both a 4 point and a 3 point suspension. The 3 point suspension engine does not have the Front Motor Arm. Instead, it has a cast iron Gear Cover which rests on and is bolted to the Front Cross Member of the frame. The Gear Cover for the 4 point suspension is stamped steel. Since the engine in my car does not have the Front Motor Arm, there is no place for the motor number. I was able to find the motor number on the Front Motor Arm of the spare engine right where you showed it in your posting. Thus, proving that the spare engine was the original engine. In the 9 years it took me to restore my car, I could not locate an engine number. Unlike a '22 Chevy, the engine number is not stamped on the fly wheel. Thank you very much, Mark, for solving this mystery and the offer to help me with my 43A. -- OLDMAN (Ross) 3/27/2022 Update. Thank you again Mark. My car with the 3 point suspension motor does have a Front Motor Arm (actually, a Motor Plate similar to the motor arm as on the 4 point suspension, but it does not support the motor) 3/28/2022 Update. I checked the Oldsmobile Parts Book dated June 1923 3rd Edition and it lists what I called the Motor Plate as the Gear Cover Plate which was used on and after engine no. B 24664. It is just somewhat different than the spare motor that is a 4 point suspension set-up. The motor number is right where you said it would be as per your information a year ago. I am approaching 80, that is my excuse for not seeing what is now obvious to me. OLDMAN! Edited March 28, 2022 by OLDMAN I added some information. (see edit history) Link to comment Share on other sites More sharing options...
George Albright Posted March 28, 2022 Share Posted March 28, 2022 Olds three port head still available $800. Thanks George Albright Ocala Florida cell weekdays 352 843 1624. Email gnalbright@gmail.com Link to comment Share on other sites More sharing options...
OLDMAN Posted March 28, 2022 Author Share Posted March 28, 2022 Thank you George. I was able to get the head for my 1922 43A Olds repaired a couple of years ago. I would like to have a back-up head, but funds are a little tight at this time. Thank you for your post. Ross Link to comment Share on other sites More sharing options...
George Albright Posted March 28, 2022 Share Posted March 28, 2022 My pleasure Link to comment Share on other sites More sharing options...
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