The need for an oil cooler when going FI (Temperature Data Inside)

[FR-S Matt]

Originally Posted by CSG David

You don't need an oil cooler if you don't drive the car.

Fair enough. So unless I become a track junkie, even a spirited weekend drive I shouldn't invest in one?

So I'm assuming the only things on my list of needs with the kit are a catch can and MAP sensor. Goal being 280-300 whp on 93 octane on the C-90. Appears the stock radiator should suffice in cooling.

Thanks for the tip David!

[CSG David]

Originally Posted by FR-S Matt

Fair enough. So unless I become a track junkie, even a spirited weekend drive I shouldn't invest in one?

So I'm assuming the only things on my list of needs with the kit are a catch can and MAP sensor. Goal being 280-300 whp on 93 octane on the C-90. Appears the stock radiator should suffice in cooling.

Thanks for the tip David!

Driving also means doing a spirited pull up an on-ramp too at 50% throttle and short shifting. Oil coolers are absolutely necessary for FI applications.

[FR-S Matt]

Originally Posted by CSG David

Driving also means doing a spirited pull up an on-ramp too at 50% throttle and short shifting. Oil coolers are absolutely necessary for FI applications.

Yeah, better safe then sorry. I'll budget in the KW one whenever it decides to release.

[zeal86]

Good info in this thread... needed it to make sure my temps were safe.

[zeal86]

edit... posted in wrong thread

[zeal86]

I posted my coolant and oil temps in another thread and it was pointed out that my oil temps should be higher than my coolant temps. My oil temps are consistent with the OP's. My coolant temps run between 190-194 during normal driving.

@spdbydesign what are your coolant temps under normal driving conditions (without FI)?


Btw, I have a Mishimoto oil cooler.

Originally Posted by spdbydesign

But the quick highlights....


88-89F Outside Temperature
Clear, Sunny Skies


Without the cooler, we saw 104-105 Celsius or 220F after a few 3rd gear highway pulls. Cruising we saw 98 Celsius or 208F.


With the oil cooler installed, 88 Celsius or 190F the highest we saw after a few 3rd gear highway pulls. Cruising we saw 84F Celsius or 183F.

projekt zeal86 build

[spitfire481]

For a street car, I dunno. I have no oil cooler and I've made 4 back to back (5ish minutes between) passes at the drag strip and still never logged over 248f by the end of the last pass. That's 30psi and roughly 600whp. If I were to push it to that level, or harder on the street I'd be dead. I don't ever plan on adding a cooler for the driving I do. If I road course raced the car, I'd 100% have one no doubt. There's enough data to show its almost necessary even on a stock car for that type of driving.

[zoth]

Being in TX we have 103 temps. right now. With out an oil cooler I should be around 240-244 @ 75mph with my oil cooler I'm around 204-206. I' happy I have one installed right after FI.

[bryan767]

Originally Posted by Dezoris

Always going to have some adverse opinions on the forum.

Some of us have been collecting data for well over a year now.
195F - 220F is common within 10 minutes of spirited driving and is completely normal on a stock car.

Any Toyota/Subaru Engineer would have tested and experienced this during development.

Ranges and Data Collected:
100-169F Warm Up Phase, high oil pressures
170-189F Near Operating temps, oil pressures still higher
190-225F Normal Operating Range, oil pressures normalize
225-245F Middle End of operating range for track use, 5% drop in oil pressures
245-255F Upper End of operating ranges for track use, 10% further drop in pressures on 0w20
255-265F Red Zone of operating ranges for track zone, 0w20 starts to thin, oil pressures drop to questionable range.
265F+ Playing with fire on 0w20

Sticky this

I'm averaging 205's n/a.. I'll have updated results next week WITH turbo

[Jason@DSG]

Originally Posted by bryan767

Sticky this

I'm averaging 205's n/a.. I'll have updated results next week WITH turbo

Yep! That's pretty much what I was saying 220 is okay, but good chance that in any hot enough place running a big enough FI setup, it's well over that and consistently (which is the worst). To each their own, but if you go FI, always good to be safe

[ofuts]

Hi,

I had been running JDL turbo kit (GTX2867R turbo) for about 3 weeks now, had oil temperature problems immediately, never went below 120C, around 125-130 when boosting, so i installed HKS oil cooler (and koyo radiator for peace of mind), took out the fog lights and duct one extra pipe to oil cooler from the front grill near intercooler, i olso titanium wrapped headers, downpipe and overpipe, and olso have a turbo blanket. Now i am seeing around 105-110C when cruising around 120km/h, 100-105 when cruising around 90km/h 6th gear on highway, very quickly climbs up to 115-120C in one minute boosting around 90-180 km/h, 120-125C in city traffic, ambient temperatures are around 20C. BTW, i am using Motul 0W40 at the moment.
Still didnt take it to track becouse it was allways occupied at weekends, but it seems that i will do 2-3 laps and 1-2 cooldown laps at this situation, which is like a joke.

From what i read from the forum, these temps are still high compared to similar turbo builds with oil coolers.
Do you think these temperatures are normal?
Can there be any installation mistake you can think of? (for ex: does t-link order matter for turbo water lines?)
Which temperature is the time to start cooldown laps at track?

Thanks

[ofuts]

Took the car to track today, i started at 90C oil temp, just like i imagined i did 3 laps (one lap is around 1:25) at 70-80% pace and oil temp was 130C!!! Did 3 cooldown laps and it dropped 120C. Took less than 2 laps to hit 130C and took 3 laps to cool it down to 120C again. Did not have any problems with water temps though.
It was not fun at all, could not concentrate because i had to constantly check the temps.

Can anyone tell what temperatures are seen at track after how long time?
Any idea what can be wrong?

[ofuts]

Ok, i think it is my innovate mtx-d oil gauge, it is reading too high. Took out its temp sensor and replaced with greddy gauge, compared both simultaneously, innovate was reading 10C higher. Not sure if it the sensor or gauge becouse greddy sensor cable was not compatible with innovate.

[ofuts]

Just came into my mind that one sensor port is closer to the oil line going "to" the oil cooler and other one is closer to the line "from" the oil cooler, can that be the reason i got 10C difference?
(HKS oil cooler comes with a thermostatic sandwich plate)