Oil Pressure Readings

Moderator: Mod Squad

User avatar
mojojojo78
Registered User
Posts: 31
Joined: Thu Jun 02, 2016 12:22 pm

Oil Pressure Readings

Post #1 by mojojojo78 » Thu Dec 28, 2017 3:13 pm

I have a question about normal oil pressure for a H-Series 226.
At idle (1000 RPM, I know it's high) I have 25 PSI
Then at speed, around 2500 RPM, it goes up to 40 PSI
It isn't until I get it over 3000 RPM that it gets up to 50 PSI
When it is cold it is a constant 50 PSI
I looked on Van Pelts and didn't see anything for the oil pressure. Does my reading sound normal?
1941 Ford Tudor - 226 L6 Flathead
Huntington Beach, CA

User avatar
B RON CO
VIP Member
Posts: 677
Joined: Tue Apr 05, 2016 7:02 pm
Location: Long Island, NY
Contact:

Re: Oil Pressure Readings

Post #2 by B RON CO » Thu Dec 28, 2017 4:22 pm

Hi, normal- maybe, good-yes. Those pressure readings sound good. You do want to see the pressure rise as the RPM s rise.
Oil pressure is high when the engine is cold, and drops after the warm up because the oil thins out when it is hot.
Oil pressure also depends on the viscosity you run. 20/50 will run at a higher pressure then 10/30.
Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

wallen7
Registered User
Posts: 164
Joined: Thu Jun 09, 2016 8:38 am

Re: Oil Pressure Readings

Post #3 by wallen7 » Fri Dec 29, 2017 10:59 am

Everything I have ever read or seen the general guidelines for any pressurized system is 10 psi for every 1000 rpm. Ford always told us 40 -60 at 2000 rpm hot was good.

Lazy JW
FSP Moderator
Posts: 5481
Joined: Fri May 16, 2003 10:25 pm
Location: Careywood, Idaho

Re: Oil Pressure Readings

Post #4 by Lazy JW » Fri Dec 29, 2017 3:29 pm

mojojojo78 wrote:I have a question about normal oil pressure for a H-Series 226.
At idle (1000 RPM, I know it's high) I have 25 PSI
Then at speed, around 2500 RPM, it goes up to 40 PSI
It isn't until I get it over 3000 RPM that it gets up to 50 PSI
When it is cold it is a constant 50 PSI
I looked on Van Pelts and didn't see anything for the oil pressure. Does my reading sound normal?


I've seen those old flatheads go to nearly zero PSI at hot idle and still stay together (not that I recommend it). Keep in mind that the valve train is all in the block, so no need to be able to pump oil upstairs.

Your engine has fine oil pressure.
"The White OX" 1974 F-350 300-6, Stock single exhaust, Carter YF, T-18A, Dana70 w/4.11, Flatbed dually w/dump bed. "Where no oxen are, the crib is clean, but much increase is by the strength of the ox" (Proverbs 14:4)
Image

User avatar
mojojojo78
Registered User
Posts: 31
Joined: Thu Jun 02, 2016 12:22 pm

Re: Oil Pressure Readings

Post #5 by mojojojo78 » Wed Jan 03, 2018 3:15 pm

wallen7 wrote:Everything I have ever read or seen the general guidelines for any pressurized system is 10 psi for every 1000 rpm.

Thanks, that is what I seem to have.

Lazy JW wrote:Your engine has fine oil pressure.

That is what I was hoping. I know these engines don't need a lot, but I had to make sure.

Thanks for the replies.
1941 Ford Tudor - 226 L6 Flathead
Huntington Beach, CA

Who is online

Users browsing this forum: No registered users and 2 guests