stevemoir

iTrader: (24)

Hey folks just wondering what your think

When in traffic at normal oil temps I was getting 1.6 bar oil pressure (via defi) and 2.7ish bar at 30 mph

Is this quite low? I'm currently using motul 15w 50 (which I have always used)

Thanks

Steve

fat-thomas

iTrader: (4)

Mine will drop slightly lower than 2 bar at hot idle but runs around 5 to 5.5 when driving
I use millers 5w 40 But have an oil cooler so the oil is always around 85 degrees

stevemoir

iTrader: (24)

Cheers for the info tubbs

Ah right mine tonight has seen 95 just normal town driving and sat around 2.5 is bar at 30mph

Does yours reach 5 bar at 30 or are you on the motorway?

You think the thickness of the oil has anything to do with it?

Steve

alcazar

iTrader: (2)

Yes it will be higher as your speed rises. Try driving at 30mph in 4th, then third, to rev the engine more, see what you get then.

And yes, the pressure will depend in part on the oil's viscosity. That's why it goes down when the oil is hot

fat-thomas

iTrader: (4)

Mine does rise above 85 in traffic but once moving quickly goes back to 85 this is due to oil cooler though.
I have no idea what it is at 30 mph all I do know is under normal driving at motorway speeds its around 5.5.

boosted

Why are you all speaking in mph with regard to oil pressure?
Surely RPM is a better medium.
30mph in 1st I see 120psi, 30 in 6th I see 20psi

fat-thomas

iTrader: (4)

I agree,once revved in neutral the oil pressure should quickly shoot up when warm

stevemoir

iTrader: (24)

Why are you speaking in psi were not in the states

It's easier (well for me) to say driving at 30 in 4th I get 2.5ish bar

You bouncing it off the limiter in first that's 8.57bar?

Steve

boosted

Because psi will confuse people like you.
My gauge is in psi.
Now you bring 4th gear into the equation, great. Is that on a 4.444 or 3.9 ratio diff? 5 or 6 speed?
Rpm is the constant, not the VS. You would never make an engine mapper if you can't look at engine speed when looking at an engine variable.
I doubt 30 is anywhere near the limiter in 1st....
120psi is 8.16 bar.
Your engines probably knackered, I recommend a full rebuild and a remap, Walbro fuel pump too

stevemoir

iTrader: (24)

People like me haha get a grip sure I can work out a simple equation of 14 psi equals 1 bar

Don't be starting your pish on diffs if you ain't got nothing informative to say hush that beak of yours eh!

And stop buying pish guages from the US thinking your in fast and furious

You sure you know what your taking about? Now my fuel pump is ****er haha

boosted

Correct, oil pressure (at normal operating temp) is directly proportional to engine RPM.

boosted

My gauge is old British leyland lorry air brake pressure gauge.
Your the one coming over all French with this bar nonsense.
14.503 psi in a bar

stevemoir

iTrader: (24)

. 7 among friends

eh no wonder your reading that high your taking your reading off a ****ing lorry and not a car?

Maz

iTrader: (34)

14.5037738 to be exact actually
I do agree oil pressure should be measured against specific engine load as opposed to speed. However you could have been a little more diplomatic.

boosted

Fed up being diplomatic. I know what I'm on about

boosted

Nope. My gauge is off a lorry air brake system. A british one at that.

stevemoir

iTrader: (24)

In the end cheers for the info guys

I know I sort of need an engine rebuild remap and fuel pump - thanks to boosted - good comebacks and British is spelled with one T

I'm sure I'll be okay with the above lol if in doubt I'll buy a lorry and compare it to that

Steve

Maz

iTrader: (34)

There are a lot of knowledgeable people on this forum which greatly helps the users. However being a forum and the written word the only form of communication I think a little tact goes a long way. Interjecting with a flippant dismissal isn't going to endear you to anyone.

boosted

Normal oil pressure for me is 7bar minimum at anything over about 3k once the PRV has opened, usually nearer 8bar.
I would be worried with less

boosted

I'm not the one insulting anyone here, I'm just giving factual information as requested my the op.
I've been accused of being dislexic, talking pish and worst of all an American buying American

stevemoir

iTrader: (24)

Cheers for the info again I've never had that

Never had that on my old 2.0 blob running 470? With defi genome aswell plumbed into the oe oil pressure slot

Could be down to the motul 300v 15w 50?

I'll get it warm and give it a good rev in neutral and see what my max pressure is and report back

Steve

boosted

Where are you taking oil pressure reading from? I take mine from the rear plug right by the breather on the block. I am running 15-40 oil.
However I run a modified oil pump

stevemoir

iTrader: (24)

I take mine from under the alternator

Temp under the intercooler

I run a standard oil pump

It's only got this bad since the weather has come in but I do live up in Aberdeen lol

Edited to add I have still go the oe plug in aswell using the lmf t piece

Might have a look for any leaks

Steve

fat-thomas

iTrader: (4)

does the modified pump run at higher pressure??

6 bar seems about the norm at hot running for imprezas

boosted

Ah that explains it, a toonser...
With colder weather you should get higher oil pressures if anything

boosted

Seems to, I modified it myself naturally. Engine hasn't shat itself yet, so must be a good thing.
90 psi your saying? Up the revs it's more like 100-120 on mine

fat-thomas

iTrader: (4)

always a good thing.

i sometimes seem 8 bar on a cold start in the winter but never when running.

5.5 to 6 bar is the norm

stevemoir

iTrader: (24)

Well I'm 4 bar on start up cold until the revs die down to idle

I'm. Sure it's down to the oil? This is on a 2.5 though if that makes any difference

Steve

fat-thomas

iTrader: (4)

ahh a 2.5.its fecked then problem solved.

not down to the oil at all id say being that low.

pick up pipe in sump broken or one of the usual poo.5 issues

stevemoir

iTrader: (24)

Still Goes like the clappers though I'll wait until I see oil everywhere before I decide to rebuild lol

Steve