Allis Chalmers B oil pressure gauge

[Mic736]

Hi
Refer to the manual. The oil pressure max is 15psi. Often it is 10 to 12 psi, with minimum at idole 5 psi.
Why all gauge in the marketing have à range of 30psi.
20 psi should enough, or 15 psi may be.
20 psi would be more appropriate for reading and would avoid unnecessary questions about low pressure. Are there 20 psi Allis Chalmers gauges available?

 

[Watthour]

If it is resolution that concerns you, a 30 PSI gauge with a 270° sweep will provide better resolution than a 20 PSI gauge with 90° sweep.

 

[Aaron SEIA]

https://www.yesterdaystractors.com/Allis-Chalmers-B_Oil-Pressure-Gauge_207834.html Just buy the OEM style and don't worry about numbers.
AaronSEIA

 

[4wdtom]

Hi
Refer to the manual. The oil pressure max is 15psi. Often it is 10 to 12 psi, with minimum at idole 5 psi.
Why all gauge in the marketing have à range of 30psi.
20 psi should enough, or 15 psi may be.
20 psi would be more appropriate for reading and would avoid unnecessary questions about low pressure. Are there 20 psi Allis Chalmers gauges available?

When I was a kid working on a farm the B was well worn and had little to no oil pressure when hot. But it had flow and ran for hundreds of hours that way.

 

[Richard Nixon]

Those Allis engines ran just fine with very low oil pressure. 5 psi is plenty.

 

[Dick L]

When I was a kid working on a farm the B was well worn and had little to no oil pressure when hot. But it had flow and ran for hundreds of hours that way.

The newer younger Allis Chamers enthusiasts will have a problem with this engine uses on the B, C and CA's. Low pressure with high flow and pressure made from centrifugal force by the spinning cam and crank shaft. Close inspection of the cam shaft and the base of the rods will explain.