Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum

N-O-R-M-A-L What is this in PSI?

Welcome Guest, Log in or Register
Trent Williams

02-16-2002 12:29:26

Report to Moderator

My d14 book says oil pressure should be around o, r,m ?? I will be buying a new gauge. Should I buy a 0-30PSI, a 0-80PSI. I don't care if it's original or not.

[Log in to Reply]   [No Email]

02-17-2002 14:20:35

Report to Moderator
 Re: N-O-R-M-A-L What is this in PSI? in reply to Trent Williams, 02-16-2002 12:29:26  
Interesting that This was brought up. My father is cuurntly restoring a B. It has never been rebuilt and it only has 10 psi when warmed up. My uncle, who has more experience than us with motors, thinks that it should be more. Please give us some hints. We are thinking of rebuilding the motor for this reason.

[Log in to Reply]  [No Email]

02-17-2002 15:19:00

Report to Moderator
 Re: Re: N-O-R-M-A-L What is this in PSI? in reply to Trevor, 02-17-2002 14:20:35  
a B or C motor will put out 15 psi on a good day. Mine runs 12 psi when hot. What you want is volume, not pressure. The pump, pumps oil donw the middle of the hollow cam shaft. Oil is sprayed thru holes toward the connecting rod and crank bearings. A relief valve limits the overall pressure to about 15 psi. A minor amount of the volumn, about 15% is blead off the pump and goes thru the filter. This oil is cleaned and returned to the sump, not directed to the bearing like your truck motor.
---If your engine has 10 psi, thats plenty. Dont overhaul unless you have other problems.

[Log in to Reply]  [No Email]
Muray Dunn

02-16-2002 16:19:41

Report to Moderator
 Re: N-O-R-M-A-L What is this in PSI? in reply to Trent Williams, 02-16-2002 12:29:26  
O-30 is about right. Allis Chalmers carried less oil pressure than many others did. I have seen them hold up wel with as little as 10 psi.

[Log in to Reply]  [No Email]

02-16-2002 16:55:20

Report to Moderator
 Re: Re: N-O-R-M-A-L What is this in PSI? in reply to Muray Dunn, 02-16-2002 16:19:41  
As a kid I ran a B on the farm where I worked that had been rebuilt at least twice. Maybe the oil pump was worn or something and it was getting on towards another rebuild. Anyway the only time that engine had oil pressure was when it was cold. We ran that tractor hundreds of hours with no oil pressure showing on the gage. But it had flow to the bearings obviosly. I will admit this isn't the best but it just goes to show you don't need much. Also had a 49 ford turck with a flathead V8 that was the same story, only that one had a rod knock too.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy