saphire cosworth oil pressure

[darranu]

Can anyone help? I'v got a dax rush with a cossy lump in it, the problem is once it's warm and the oil pressures settled down its only at 2 bar.
Is this the normal oil pressure and am i worrying about nothing. When it's cold it holds at 5-6 bar for around 20mins before it settles once warm

Many thanks
Darran

[KirstM]

That sounds fine

[darranu]

Now i'm glad to here that, think i'm becoming a bit of a worrier

[KirstM]

Don't worry unless it goes below 1 bar

[falcemob]

Is this on tick over or when revving? I would start to worry about it being this low even on tick over when it's hot, if it's when you are revving the engine it doesn't sound good.
What oil are you using?

[KirstM]

No if its 2 bar at tickover thats 28/29 psi and thats fine. Our 3 dr Sierra Cossie ran at 27psi

[darranu]

it seem's to hold at 2 bar on tick over climbing slightly to 2.5 when it's reved.
Thanks for the advice

[falcemob]

KirstM said:

No if its 2 bar at tickover thats 28/29 psi and thats fine. Our 3 dr Sierra Cossie ran at 27psi

Does that make it OK then?

darranu said:

it seem's to hold at 2 bar on tick over climbing slightly to 2.5 when it's reved.
Thanks for the advice

Although it should be alright, it seems a tad low to me, what's the history of the engine?

[KirstM]

falcemob said:

KirstM said:

No if its 2 bar at tickover thats 28/29 psi and thats fine. Our 3 dr Sierra Cossie ran at 27psi

Does that make it OK then?

Ours ran at that, after a fresh rebuild and new oil pump, for five years and never changed. If your oil pressure is low the tappets go noisey.

Edited by KirstM on Sunday 19th November 19:11

[andygtt]

What oil do you run?, I found that the new (well it was 6years ago) mobile 1 was too runny and thus couldn't maintain as good an oil pressure as with the Castrol RS I switched to.

[stevieturbo]

regular Mobil 1 with the 0 rating is poo.

Use Mobil 1 motorsport 15/50

OR Millers, Motul etc etc

[KirstM]

andygtt said:

What oil do you run?, I found that the new (well it was 6years ago) mobile 1 was too runny and thus couldn't maintain as good an oil pressure as with the Castrol RS I switched to.

We used Castrol RS or Valvoline SynPower

[darranu]

it's fresh from a full rebuild, i'm running it in at the mo and it's just got castrol oil in it until i'v done the required mileage. the last engine suffered a seized bottom end so i'm just a bit paranoid of all things to do with lubricant i think.

[Mikey G]

I cant see a problem with 2 bar at all, the switch probably cuts in way below that anyway.

I spoke to an engine builder back about 15 years ago and when i asked him about oil pressure his advice was that 5 psi of quality oil is better than 25 psi of bad oil.