Aftermarket oil cooler will help a lot.

I've been over 220 degrees for short periods on the coolant. No problem to report.

This is a built 1J.

 

I have the "bug" on my oil temp gauge set to 260F, and it gets there on the track when I'm really killing it on a warm day. I have an Earl's oil cooler, and oil temp sensor is in the stock oil filter mount union bolt.

The "stock oil cooler" is actually a heat exchanger, which will help warm the oil with the coolant when the car is cold, and then cool the oil with the coolant when things heat up. So yes, your hot oil is warming up your coolant.

 

Good detail, thanks. Was surprised it didn't go much beyond 275(oil) with no real oil cooler, while some of my buds were seeing 290 easy. Mind you, I'm measuring right near the oil-return from the turbo, thus this should be the hottest, and I get very quick temperature changes/sensitivity down there.

 

Time for an aftermarket oil cooler. That should bring down coolant temps as well.

Steve K.

 

I removed TT cooler and have NA housing with 25-row Series 6 Setrab cooler. I haven't had it on the track yet, but I can say the following:

1. Its fits in the driver's duct opening but sit as low as the Whifbitz lip
2. Running 12 AN lines with Mocal SP1THF (high flow; 180F thermostat built in) sandwich adapter.
3. Temp sensor is in 1 of the 2 ports of the NA filter housing. MoTeC temp sensor
4. Oil is 20W-50 Amsoil dominator with a 51516 Wix filter (same as larger Toyota filter)
5. Minor increase in oil pressure at idle and throughout RPM band. Temp drop correlates to increase in pressure.
6. Oil pump is modified by AP but not shimmed for high pressure.

Daily driving: (80-90F ambient)

Pre-oil cooler install - 205F; Max of 210F
Post oil cooler install - 178-182F: Max of 185F

Track:

Will find out in the spring. I estimate oil temp will be at or near 225-230F per session.

Overall I'm happy with it for a street car.

 

25 degrees is a good drop! any temperatures on the track PRE cooler install?

 

The oil temps will be a little lower during a track session with the oil cooler, but also another main benefit is that oil temps will drop quicker with the cooler during a cool down lap (from 260F down to 200F within just a few minutes for me).

 

My last telemetry logs show peak 212coolant/273oil, dropping to 190coolant/255oil after 1 minute cooldown lap. Not too bad, but will be great to compare results after oil cooler install.

 

For those guys setting CEL off their oil temps what are you using?

 

When I first converted my car to NA-T, on my first track day I attended post set up change, I was seeing 130 deg C after only 5 laps. This was running 8psi with circa 340whp, and that was on a day with ambient temps around the 16 deg C mark.

I then installed a 19 row setrab oil cooler, and remote oil fitlter, and my temps have never gone over 100 deg C ever since, even though Im now running circa 380whp and have run the car for endless laps with ambient temps of around 26 deg C

In my opinion, an oil cooler is an absolute MUST for anybody tracking their turbocharged car, and oen of the best investments you can make to take care of your investment.

 

agreed.