dry sump oil pressure

[thechuckster]

Not if you arent running an oil cooler tho.

if you've gone to the expense of a dry dump pump, then a thermostat-controlled cooler would be given?

[rms]

2 extremes of oil pressure
2006 V8 Supertaxi
2002 V10 F1

[gianttomato]

Rule of thumb kinda holds for the taxi. Whole different kettle of fish for the F1 beast.

[Celica RA45]

so 250 kilopascals is 36.5 lbs and 600 kilopascals is 88 lbs

[dave368]

so 250 kilopascals is 36.5 lbs and 600 kilopascals is 88 lbs

But most importantly, what grade and type of oil are you running it in with. What was the oil temperature like? That sounds like a pretty thick oil if you are getting that much pressure at idle.

On mine, I will see around 15psi (idiot light is set at 20psi) with no load at idle after 10-15 laps of racing using 15W-50 oil with an oil temp around the 110-120 degree mark. At the recent rebuild, the bearings were is such good condition that they could have been put back into the motor. We also use the rule of thumb of 10psi per 1000rpm but we only rev to 6500rpm but we do have a turbo that will add heat to the oil.

The system comprises of a 3 stage dry sump, oil cooler and custom tank in the boot and the whole system holds about 10L of oil.

Cheers,
Dave

[Celica RA45]

its a 3 stage dry sump with 2 dash 10 scavange going to dash 16 from there to a 20 row oil cooler,still dash 16 into the tank at the fire wall and strut tower ,from there back into the pump dash 12 then up to the oil filter dash 10 and into the std oil filter location and receiving oil pressure from std altezza sump
this is pretty much the same as the std oil pump makes in the 3sge altezza motor around 300 on idle and up to 650 on full throttle .
this new motor still runs vvti and has 550 thou inlet and 500 thou exhaust
running run in oil which is 30 grade ,will go up to a 5 w 60 after wards being full synthectic oil
i can do 15 laps around winton long track and oil temps from the sump pan sits on about 100 c with out a cooler ,only heat exchanger that is factory fitment
but seeing as i have 3 oil pumps the extra heat from the friction made me use a oil cooler ,
i also use a 70 c thermostat as well to help the radiator

[jeffro ra28]

Where i used to work, i built several $80 000 race engines, 2 that were $116 000 each. None of which used an oil cooler and you could hold your hand on the oil tank for as long as you wanted after a 5 lap race under constant load. The particular engine i did this on was making 2090 hp (fly) with a afr of 10:1 the whole time (rich as fuck)
If you use an oil such as REDLINE, you really dont need an oil cooler. There are also other advantages tho. You will pay $30-$40 a litre but whats worth more? your $80 000 engine? or expensive oil?

Sure, oil coolers are great if you are using an oil which does not have as good heat dissaption properties etc.

Bare in mind, these engines all saw the engine dyno, lots of testing and development went into them and engines being pulled down for inspection after one dyno pull, or 100's. Experimenting with all different oils,pressures, bearing clearances and modified or restricted oil galleries.

We found what works best for us anyway.

My only reason to debate why it may be different on a japanese engine, is the fact of the turbo oil supply and or hydraulic lifted engines.


Suit yourselves.............................

if you've gone to the expense of a dry dump pump, then a thermostat-controlled cooler would be given?

[Billzilla]

Bill S. runs a dry sump in his race car - he'd be one to ask?

I run a stock oil pump in the racer, so it runs stock oil pressure.
And with the VVT-i gear of the 3SGE, I'd be very tempted to keep something very close to stock pressures as well - maybe a touch higher to help the cam timing adjusters move around with the bigger cams behind them though.

[rms]

The particular engine i did this on was making 2090 hp (fly) with a afr of 10:1 the whole time (rich as fuck)

What class of car was this ?

[jeffro ra28]

It was the engine that won the 2007 world power boat championships.

[jeffro ra28]

I run a stock oil pump in the racer, so it runs stock oil pressure.
And with the VVT-i gear of the 3SGE, I'd be very tempted to keep something very close to stock pressures as well - maybe a touch higher to help the cam timing adjusters move around with the bigger cams behind them though.

On somthing like the 3sge, id agree with bill

[xbgs351]

What the hell is klp?

[horse]

http://en.wikipedia.org/wiki/Kip_%28unit%29

[xbgs351]

http://en.wikipedia.org/wiki/Kip_%28unit%29

Well Kip is a unit of force not pressure. When will the yanks adopt SI?

[Celica RA45]

a klp is a kilopascal ,same as puttting air into your tyres
1 psi =6.89476 kilopascals or 68.95 millibars
100psi =680 kilopascals hope this helps