Well after talking with at least a dozen people about this and no one really having an answer, I went ahead and bent the trigger plate to clear, only had to bend it about .020" to get it centered in the sensor so hoping that this isn't going to come back to haunt me again, time will tell. Planning to get the car out on track again this Sunday at Autobahn, they're calling for 90F with a heat index over 100F so hoping to get some good hot weather data, we'll see...

 

Well, that’s a glass half full attitude. I’m going to the track this weekend and they are forecasting 93 degrees tomorrow. I’m dreading the heat, but I guess I’ll see how my new oil cooler performs.

 

Haha I still bake on cool days in my suit and the car doesn't have any HVAC so you just get used to being hot no matter what and drink plenty of water.

 

Took the car out to Autobahn Country Club yesterday. Ambient temp was mid 90s, heat index over 100. I didn't sleep saturday night, instead I installed my CSF radiator and water temp gauge.

Car performed nearly flawlessly. Coolant temps didn't break 215, oil got up to 270 but never higher, tires and brakes were consistent and gave good feedback the entire time.

I need to check a leak at my power steering reserovir cap, I think it's overfilled. I lost the top windshield seal on track so I need to replace that, and I need to find a way tighten my review mirror and it drops when I hit curbing.

I'm still seeing some lower speed, high steering angle wheel hop. I kept dialing in more rebound on the rear struts which helped it but I still have more work to do to get that sorted. I went with the intention of testing cooling systems to make sure they're adequate for Colorado later this month and it seems like the car is ready 🙂

 

270 is uncomfortably hot for oil assuming the temp sensor is in the pan where it should be (not on the OFH or in a sandwich plate).

I'd look into improving your oil cooling. Coolant temps will probably also come down some with cooler oil.

 

It's in the OFH. That's the temp of the oil going into the engine so that's the location I think is most appropriate.

 

Just like engine coolant, or automatic transmission fluid temp, the appropriate location is after it goes through the engine (or the trans in the case of ATF), which for coolant means the tsat housing (right where the water leaves the engine and goes to the radiator), and for oil means the temp in the pan.

In the OFH, you're measuring temps after it goes through the pump and then the oil cooler. It hasn't had any heat added to it by doing its job in the engine. So it's hard to say what your actual temps are with where you have the sensor.

 

My sensor is before the cooler. Where I'm pulling temp should be the hottest point the oil will be at, it gets heated up by the pump and cooled back down going thru the cooler.

Putting one between the pump and cooler makes this the hottest point for the sensor. I've thought about adding a second location to look at deltas but I have bigger fish to fry right now.

 

Temp in the pan is what is needed to be known. It's oil temp after it goes through the system and tells you the average of the temp being seen by the bearings/head/turbo and that is what important since that is where the lube is needed, it tells you the oil in the bearings/head/turbo is an appropriate temp.

At the very least you should add a sensor in the pan to see that delta. Nothing in the engine see the post pump oil temp since it then goes through the cooler and probably sheds 75-100*, so it's pretty much a useless measurement.

Just trying to help you get better data based on what I've learned working on stuff in top level motorsports apps.

 

I fully understand what you're saying and the reasoning behind it, but I'd rather know the peak temperature being reached by the oil, not what its temp is as it sits in the sump. If I know I have my sensor at the hottest point then I know it can't be any worse futher downstream.

When I find what the delta is I can use that as a rule of thumb for sump temps.

 

Well your highest temp measurement is a temp that would trigger an oil temp alarm/warning in everything I've touched. So, based on that the car should be getting cool down laps in between hot laps.

 

270F doesn't warrant cool down laps to me. If it was 290-300 then absolutely. 270 is on my radar but not worrisome temperatures. And again, this is in 100F temperatures with a fair amount of humidity, there's almost no day that this car will run hotter.

 

Didn't get many clean laps in on Sunday but here's a vid of one. It's a pretty sloppy lap but given the circumstances of the car I'm not upset at all with how it performed

 

Well I got a bit more work done on the car to try and help with the understeer and the wheelhop but unfortunately I won't be able to test it out before Colorado at the end of the month.

Built some endlinks with materials sourced from McMaster Carr. With them I was able to pull all the preload out of the swaybar and set it one setting stiffer (went from soft to mid). I also pulled almost all of the preload out of the springs which gained me like another half inch of droop travel. And I finally remembered to pull my rear spacers out so the rear track is narrowed by 6mm.




Just waiting on some Cusco brackets to come in the mail so I can throw on the front endlinks and soften up the front bar a tad.

Have a small check list of things to do before Colorado but none of it is big stuff. The only project-ish thing being to make a cooling duct for the oil cooler behind my front bumper which I've already started on. Hoping to get the shape finished this week and get it printed sometime next week.

 

Do you have a parts list for the endlinks?

For the oil cooler duct: Are you going to print that yourself? ABS, or some other material?