just wondering what everyones oil pressure is on their cossies cold and hot on tickover and driving????????

 

What are yours ?

Cold = about 52

Hot idle = about 34

Hot driven = about 47-48

This is with a capilery gauge.

Steve.

 

mines as follows

cold idle.....70psi

hot idle.....20psi

hot driving....55-60psi

hope this is ok!!!!!!!

 

stone cold about 79

hot idle about 28

 

I don't know why mine is so low on Hot driven ?

It has lost a few pound of pressure over 3 years but has never been high.

I think your Hot idle is a bit low, but not sure.

Steve.

 

OIL PRESSURE (ALL MODELS)
MINIMUM OIL PRESSURE WHEN AT NORMAL OPERATING TEMPERATURE.

IDLE SPEED 1.8 BAR (26 PSI)
2000 RPM 2.4 BAR (35 PSI)


FUEL PRESSURE (ALL MODELS)

IDLE SPEED 3.0 BAR (44 PSI)
WITH PRESSURE PIPE REMOVED FROM REGULATOR 3.5 BAR (51 PSI)

 

i thought the same about my hot idle too.....what does anyone else think??

 

your just a fountain of knowledge mike

 

thanks for the info there mike

 

mines about 4.5 bar.

 

So does this means my Hot Driving pressure is ok, was a bit concerned it was low.

Steve.

 

need to know if i have enough pressure to uprate the engine to 400s

Steve.

 

The original oil pressure sender is set to show the oil light on when you hit 15psi.

If you showing 20psi at idle...not really a worry maybe your tick over is a bit low?

The main part is 2000rpm as Mike points out MUST be min 35psi.

My 2 Cossies have newish engines in the Escos has a high pressure pump and the Saff a std one.

Escos @ idle at 1000rpm tickover is 35 (will drop to 25 after a really hard thrash but its only running semi synthetic oil at the mo)...at cold its 70psi ish warm at 3000rpm 55psi

Saff @ idle at 700rpm on crap running in oil is 30psi ish on cold about 55psi and at 3000rpm around 50psi

 

Cossie4i...your figures are fine for a std pump IMO

 

Thank the Lord lol

Karl and the 400s here i come

Steve.

 

Are you stupid? . If your oil pressure exceeds the minimum required, then you have nothing to worry about . I thought that was pretty clear myself .

 

Warm tickover:
About 3bar (44psi) @ 900rpm

5.3bar (78psi) from just below 2k and up.


Cold:
5bar+ (74psi+) From tickover and up.


Just got to love the high capacity pump.

 

There is no need at all for such high oil pressure....i bet your gaskets luv you!!!

 

My pump doesn´t make any higher pressure than the normal high pressure pump. It just makes more pressure at low rpm.

The high pressure at low rpm means my pistons loves me for getting nice cooling oilspray even at tickover.

 

No im not stupid Mike
Just like to make sure

Steve.

 

.

 

Don't forget that oil plays a big part .i find that castrol 10/60 gives a higher all round pressure,mobile 1 motorsport is a little lower .

My mate put comma oil in his and hot pressure was the worst (driving) at 35 psi @ 4000 rpm The oil did not stay in there long !!!!!
oil coolers can drop pressure as the pump needs to flow more .

 

My oil pressure is at 80 PSI at 3000 RPM (when at 80ish degrees)

im using 10-40 mineral oil to run it in,

is this gonna give me any probelms when i change to proper oil later on?

blowing seals out all over the show ?

 

Got it back together again then

Just finished my bottom end rebuild as well last night

Got a standard pump in mine, hot idle is now 39-40 lbs

Steve.

 

Probably no, if it´s a high pressure pump. I think it´s the pressurerelief that opens to keep it at that pressure.

If it is a std. pump you might have a problem running thicker oil. Because 80psi on a std. pump means that the pressurerelief valve can´t get rid of enough excess oil to keep the pressure down. And this would get worse with thicker oil.

If everything is rebuilt with new stuff with the right clearences, you won´t get much more pressure with better/thicker oil.

If there is a huge difference, something is wrong. Only if the clearance in pump and/or bearings is too big you will get benefit of a thicker oil.

 

Standard size everything, everything within ford tolerances.
but with a high pressure pump.

seems to idle just below 30psi at 80degrees,
but as soon as you touch the throttle its
up round 60 and above.
thanks!

cossie4i
yes mate new crank and bits and pieces!
everything is almost exact same toleraces as before,
and yet the oil pump is the only thing thats been altered... they still reckon it wasnt fooked


just wanna drive it now!