HPDE oil temps
03-29-2017, 06:21 AM
#21
hot
I stopped watching the coolant temp to just focus on oil temp. But, the car just got urethane bushings and T1 bars, and that upped the performance substantially--much faster. Sealing around the radiator, etc is a good tip, have read that before but not done it yet.
03-30-2017, 11:40 AM
#22
Melting Slicks
I have actually watched this video a few times when I was doing my research on oil coolers.
At 275deg I do a lap in fourth gear, don't rev over 5,000 rpm and the temperature is usually back down to 250deg by the end of the lap. Since I am still new to HPDE I don't mind a slow lap that much since I can take it easy and think about my previous laps before I go back into try hard mode.
Am I being overly cautious with 275? When the Honda guy tells me that 275 is a scary oil temp, I got a little worried.
At 275deg I do a lap in fourth gear, don't rev over 5,000 rpm and the temperature is usually back down to 250deg by the end of the lap. Since I am still new to HPDE I don't mind a slow lap that much since I can take it easy and think about my previous laps before I go back into try hard mode.
Am I being overly cautious with 275? When the Honda guy tells me that 275 is a scary oil temp, I got a little worried.
Your are on the right track; I had the same issues with my C5. I would back mine down at 290, (but then I was using Red Line Racing oil too)....I was told it would throw a code at 305 degrees. I got tired of only being able to run half the session before having to cool it down; I went with the Ron Davis internal oil cooler. It dropped the temps down about 30 degrees....well worth the $1100 I had to pay for the upgrade.
I was also looking at adding an external oil cooler in the front licence plate opening.....but traded the car off for a GTA spec race car instead. Good luck
03-30-2017, 09:36 PM
#23
Drifting
Not sure what constitutes a necessary cool down lap oil temps in a C5Z but in my C6, no way am I doing a cool down @ 275*F. The limp mode max in the C6 is 320*F. This is what GM sets to protect the engine so I suspect there are several additional degrees of a safety margin built in. Now I don't recommend running to 320*F but 290*F, at ~10% below GM's safety margin level, is fine. Been doing it for years. By all means add cooling but don't cut yourself short @ 275*F.
03-30-2017, 11:49 PM
#24
Come to think about it, if I actually calculated how much I have spent on track days and parts this year, I would probably sell the car and buy a prius.
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Cyber Greg (03-31-2017)
03-31-2017, 12:44 AM
#25
Supporting Vendor
Not sure what constitutes a necessary cool down lap oil temps in a C5Z but in my C6, no way am I doing a cool down @ 275*F. The limp mode max in the C6 is 320*F. This is what GM sets to protect the engine so I suspect there are several additional degrees of a safety margin built in. Now I don't recommend running to 320*F but 290*F, at ~10% below GM's safety margin level, is fine. Been doing it for years. By all means add cooling but don't cut yourself short @ 275*F.
03-31-2017, 07:04 PM
#26
Drifting
I am running an all aluminum Lingenfelter 427ci SBC with 646 HP and I am using a water/oil heat exchanger. I have never seen the water temp over 205 and the oil temp over 183 with the air temp over 100. On a normal 80-90 degree day it usually runs about 185-190 for the water temp and about 165-172 for the oil.
04-10-2017, 02:05 PM
#27
I do about 9 - 12 days per year. I start the season with a fresh change of Amsoil 10W-30. When the weather gets hot, say into the low 70s, I switch to Redline 10W-40 and run that through the rest of the year. This equates to a change approx. every 5th day. As the manual recommends, I also add 1qt before each track day and drain it thereafter if I know I am going to put a good amount of street miles on it before the next day. If I am only going to drive home then in a couple of weeks, drive back to the track, I'll leave it in.
Last edited by TKOGTO; 04-10-2017 at 02:06 PM.
04-10-2017, 02:10 PM
#28
My target as well but lately despite an EOC, a DeWitts and 2 trans coolers, one or the other gets close to my target max for them before the oil gets to 300*F. Got there last year @ WGI when it got sunny and the track heated up. Earlier that same day under cloudy skies, didn't come close.