oil temp debate

cossie1600 · 08-07-2011, 11:25 PM

Quote:

Originally Posted by ChrisSlicks

These engines produce a lot of heat. On track even with an oil cooler I can hit 280F if pushing hard for several laps on a fast track. We're not the only cars without coolers, Corvette's (non Z06) models have a similar issue and can push oil temps to 320F and coolant temps to 260F.

I don't really notice a power loss until 280F when the ECU intervenes. Prior to that there is a slight loss of throttle response and perhaps a very slight loss of power as the ECU adjusts the timing.

My non Z06 C6 had an oil cooler and it still ran 250-260s, people need to stop flipping out like little kids. I think water temp it got up to 230 or 240F.

Your 370 is not outrunning a GTR at 200F or 280F....

Just as a heads up, the OBDII system doesn't read the oil temp as one of its parameter. If you lose power, it's most likely because of the variable timing or car pulling time due to intake temp. It really isn't directly related to oil temp.

wstar · 08-07-2011, 11:30 PM

Quote:

Originally Posted by cossie1600

Just as a heads up, the OBDII system doesn't read the oil temp as one of its parameter. If you lose power, it's most likely because of the variable timing or car pulling time due to intake temp. It really isn't directly related to oil temp.

The ECU most definitely does read the oil temps. How else does it know to enable the two stages of limp mode at 280 and 300? Whether it uses coolant or oil temp to pull timing is currently a mystery to me, but it has to be doing one or the other well before 280.

cossie1600 · 08-08-2011, 12:27 AM

Quote:

Originally Posted by wstar

The ECU most definitely does read the oil temps. How else does it know to enable the two stages of limp mode at 280 and 300? Whether it uses coolant or oil temp to pull timing is currently a mystery to me, but it has to be doing one or the other well before 280.

Yes you are right the ECU does read it, but I meant it doesn't seem to have any direct correlation to pulling timing back like it would with coolant and air intake temp. Someone did mention it can change the VVTL, which is possible. Still from what I can see, ECU doesn't pull timing based on oil temp. Of course as oil temp goes up, your coolant and air temp already went up.

Remember limp mode is a rev limiter if I recall correctly, it doesn't just pull power

ChrisSlicks · 08-08-2011, 06:21 AM

Quote:

Originally Posted by cossie1600

My non Z06 C6 had an oil cooler and it still ran 250-260s, people need to stop flipping out like little kids. I think water temp it got up to 230 or 240F.

Your 370 is not outrunning a GTR at 200F or 280F....

Just as a heads up, the OBDII system doesn't read the oil temp as one of its parameter. If you lose power, it's most likely because of the variable timing or car pulling time due to intake temp. It really isn't directly related to oil temp.

I only flip out when the ECU shuts me down.

And for the record I did outrun a GT-R at NJMP by 0.4 seconds, granted he was on the stock tires and I was on slicks.

cossie1600 · 08-08-2011, 08:20 AM

Quote:

Originally Posted by ChrisSlicks

I only flip out when the ECU shuts me down.

And for the record I did outrun a GT-R at NJMP by 0.4 seconds, granted he was on the stock tires and I was on slicks.

I am with you, but I usually don't go long enough for my car to get to 260F. To hit 260F+, I have to go balls to the wall for 3 or 4 straight laps. I have to say my tires and brakes will get too hot before I have to worry about the engine.

I ran 2 sec slower than the only GT-R I saw at VIR. I blame it on my 255F oil temp. I must have lost 150HP with the high temp compare to my 180F on the street.

The ones who preach about how much high oil temp hurts are probably the same people who tell us VDC only slows you down if you are not a smooth driver

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
HELP! The great Debate 370z vs. G37	oo7mech	Nissan 370Z General Discussions	114	01-08-2012 10:24 AM
The Big Coilover VS Spring Debate	RedBullRR	Brakes & Suspension	20	04-06-2011 04:02 PM
fs: Megan Racing Oil Temp/Water Temp/Oil Psi Gauge	cossie1600	Parts for sale (Private Classifieds)	0	04-13-2010 09:17 PM
In a debate about rims...	rreign	Wheels & Tires	19	04-30-2009 07:12 AM