how much oil pressure you get?

beaver2489

Founding Member

Feb 26, 2002

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st. joseph missouri

May 10, 2004

#1

• May 10, 2004

• #1

I hooked a manual oil pressure gauge up to my rebuilt motor and I get 75lbs of pressure when cold. Someon on here said that sounds like too much? Is this ok? I thought the more the marrier...

 

jaidedeye

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Apr 4, 2004

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Goldsboro nc

May 10, 2004

#2

• May 10, 2004

• #2

i get about 65 psi when cold...

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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May 10, 2004

#3

• May 10, 2004

• #3

most 5.0 guys would love that much pressure. the only thing you gotta think about - remember that with too much pressure, the bypass kicks in. so one has to make sure they are not bypassing the filter.........i asked a few weeks ago, what pressure a stocker bypasses at, and did not find out. i need to research it.

 

ninety15.0

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Mar 10, 2004

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May 11, 2004

#4

• May 11, 2004

• #4

No i think thats fine...i would love to have all that pressure all the time. when mine is cold i probly get like 60-65 but once it gets warm and im not driving it hard it goes WAY down. I dont know if its just the guage but it pisses me off. Anyways, it takes a couple minutes for the oil pressure to even give an accurate reading when the car is just started up cold. What does it read when cruising and accelerating? i think ur fine! good luck with it

 

beaver2489

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Feb 26, 2002

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st. joseph missouri

May 11, 2004

#5

• May 11, 2004

• #5

ya, with the stock gauge thats in the dash...mine sits at the second line. with the mechanical guage it reads 65-75lbs. The stock dash gauges suck ass IMO.

 

R

Rerun

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Mar 31, 2002

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South Bay, California

May 11, 2004

#6

• May 11, 2004

• #6

65 when cold, 40-45 when fully warmed up. On hot days even a bit lower at idle.

 

stangbear427

Active Member

Nov 11, 2002

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New England

May 11, 2004

#7

• May 11, 2004

• #7

Heh! about 50psi cold, 12psi warmed up at idle. 30psi warmed up cruising, any rpm. 232,000 miles, never rebuilt, no smoke no leaks. Oh yeah- 75psi is fine for a cold engine. As long as you aren't one of those people who starts it cold when it's 20 degrees out and immediately takes off blasting up the road, you'll be fine. Just give it a minute to circulate. What's it put out warmed up cruising? That's the one that matters more.

 

Wil

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Jan 2, 2003

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Burke, VA

May 11, 2004

#8

• May 11, 2004

• #8

I get about 60 when cold, 35-40 when driving, and sometimes it drops to about 20-25 when I'm just idling. I have phanom gauges so I assume there accurate.

 

Legendary

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Oct 10, 2002

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City of Angels

May 11, 2004

#9

• May 11, 2004

• #9

I get 65 when cold and around 40 when at idle (lower when hotter outside). It goes to 50 when driving.

 

_jb_

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Mar 4, 2004

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Michigan, Berrien County

May 11, 2004

#10

• May 11, 2004

• #10

According to the OEM guage, I get about 60 psi at startup, and usually between 20-50 when driving, depending on the RPM.

 

M

MavericK5L

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Mar 18, 2003

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Montreal

May 11, 2004

#11

• May 11, 2004

• #11

Wil said:

I get about 60 when cold, 35-40 when driving, and sometimes it drops to about 20-25 when I'm just idling. I have phanom gauges so I assume there accurate.

Click to expand...

I get the same exact number with my ultra-lite !

I guess they are accurate !

 

Wil

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Jan 2, 2003

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Burke, VA

May 11, 2004

#12

• May 11, 2004

• #12

they better be for what we paid for aftermarket gauges. good to hear I'm getting normal readings, when I first got them I thought my fuel pressure was messed up due to the numbers going up and down. Now I know that's normal

 

powershift351

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Apr 2, 2004

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Carlsbad, Ca.

May 11, 2004

#13

• May 11, 2004

• #13

I get a solid 70psi when cold, but then again I have a 351w

 

hllon4whls

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Jan 17, 2002

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Covington

May 11, 2004

#14

• May 11, 2004

• #14

It depends on the weight of oil you use. My friend has a drag car that runs 20w50. If it is cold out, he puts out more than 100 psi. Motor has been raced for 10 years. Worst thing that has happened to it was a dropped valve.

 

HISSIN50

"How long does it take to get help in here?

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Nov 29, 1999

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May 11, 2004

#15

• May 11, 2004

• #15

beaver2489 said:

I thought the more the marrier...

Click to expand...

another idea: pressure can be indicitive of resistance. this can equate to a lack of flowing well, like someone running 50 weight SAE in 40* ambient temps will have more pressure than someone running 5W-30. however, the person running the latter will be flowing the oil more efficiently, albeit showing less pressure.

what weight of oil are you running in your fresh mill? if it is something viscous, you could likely step down to a thinner oil and still have adequate pressure, while flowing better when cold (assuming you are running thicker oil right now).
two cents worth of my two-cent thoughts. good luck.

 

beaver2489

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Feb 26, 2002

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st. joseph missouri

May 11, 2004

#16

• May 11, 2004

• #16

its a synthetic blen made by havoline, the lowest I've seen it drop so far is like around 50 and that was with the motor pretty warm.

 

stangbear427

Active Member

Nov 11, 2002

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New England

May 12, 2004

#17

• May 12, 2004

• #17

Should be alright with a synthetic, they're pretty slippery.

 

89MustangGX

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Jul 3, 2001

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Mill Creek, WA

May 12, 2004

#18

• May 12, 2004

• #18

I guess 75 would be ok for a cold engine on initial startup, as long as it drops afterwards -- but driving around with it stuck on 75 all day (like I thought you meant initially) I would be concerned.

 

powershift351

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Apr 2, 2004

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Carlsbad, Ca.

May 13, 2004

#19

• May 13, 2004

• #19

75 is good, for sure