The Ford Barn

Bob Bidonde · 02-04-2025, 12:20 PM

A question that often arises about the Model A's oil pump is, "What is its flow rate?" The only info I could find is the flow rate is about 1 gallon per minute at a shaft speed of 1300 RPM. This correlates to a crankshaft speed of 2600 RPM, which in high gear with a 3.78:1 differential is a bit over 60 MPH.
Does anyone know of a factory spec for the oil pump's output?

Synchro909 · 02-04-2025, 06:21 PM

I don't know he factory spec but Lawrie in Australia has done a lot of work on various pumps and heir flow rates before deciding on a pump for his Burtz. He might be able to help with real life figures.

alexiskai · 02-04-2025, 06:48 PM

Link to the thread where you asked this two years ago, just so people don't reinvent the wheel:
https://www.fordbarn.com/forum/showthread.php?t=325410

Y-Blockhead · 02-05-2025, 06:15 PM

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Quote:

Originally Posted by alexiskai

Link to the thread where you asked this two years ago, just so people don't reinvent the wheel:
https://www.fordbarn.com/forum/showthread.php?t=325410

Thanks Alexiskai! I thought I saw this topic somewhere. Never thought the same person would be asking again two years later!!

A lot of good info there.

02-04-2025, 12:20 PM	#1
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 4,112	Oil Pump Flow Rate A question that often arises about the Model A's oil pump is, "What is its flow rate?" The only info I could find is the flow rate is about 1 gallon per minute at a shaft speed of 1300 RPM. This correlates to a crankshaft speed of 2600 RPM, which in high gear with a 3.78:1 differential is a bit over 60 MPH. Does anyone know of a factory spec for the oil pump's output? __________________ Bob Bidonde

02-04-2025, 06:21 PM	#2
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 8,043	Re: Oil Pump Flow Rate I don't know he factory spec but Lawrie in Australia has done a lot of work on various pumps and heir flow rates before deciding on a pump for his Burtz. He might be able to help with real life figures. __________________ I sometimes wonder what happened to the people who asked me for directions. Even at my age, I still like to look at a young, attractive woman but I can't really remember why.

02-04-2025, 06:48 PM	#3
alexiskai Senior Member Join Date: Apr 2018 Location: Mebane NC Posts: 2,848	Re: Oil Pump Flow Rate Link to the thread where you asked this two years ago, just so people don't reinvent the wheel: https://www.fordbarn.com/forum/showthread.php?t=325410