This is one of the reasons SC's are not good for roadracing. I would add an oil cooler.
High Oil Temps??
Thread Starter
Intermediate
Joined: Mar 2007
Posts: 41
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From: Corona CA
High Oil Temps??
I ran my 07 today on the Roval at California Speedway, car has a Vortech Supercharger we would run hard for 15 to 20 minutes. Are the temp excessive? 2.8 mile track the car was hitting 150mph in the straight away.
Trans temps @264
Coolant @210
Oil @ 294
Trans temps @264
Coolant @210
Oil @ 294
Le Mans Master
Joined: Sep 2004
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From: Los Angeles
Race Director
Joined: Jan 2006
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Extended hard running with a FI car is real hard on the oil temps. Sometimes, in hot summer temps, even a big oil cooler can't help enough. As posted above, tracking a FI car is not a good idea. If you ran your car at these oil temps for more than a very short period, I be afraid you will have some rod bearing damage.
Le Mans Master
Joined: Dec 2002
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From: Montreal Qc
Although the engine oil temp is high I would be more concerned with the trans temp, you need to speak with someone like Dewitts about what a good aftermarket radiator with oil coolers can do for you. 
Former Vendor
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From: Brighton
Melting Slicks
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From: Santa Barbara, CA
And they are on sale right now!!!!http://www.dewitts.com/pages/categor...s.asp?catID=19
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From: Brooklyn New York The DVL and the chicken sleep with the fishes....
St. Jude Donor '08
Cool to see it done though
- Were you feeling a big power drop-off when the car was running that hot ??
Thread Starter
Intermediate
Joined: Mar 2007
Posts: 41
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From: Corona CA
Im surpised to see such high oil temps with such low coolant temps ... As said above , S/C Vettes are not "ideal" (it can be done , but only with larger coolers , ect) for road courses . This is one of the reasons I will be going the N/A route the next time around , I really want to get into road racing , but the with supercharger , the heat monster can be a real bitch - I would think that in the dead heat of summer , you would have overheated .
Cool to see it done though - Were you feeling a big power drop-off when the car was running that hot ??
Cool to see it done though
- Were you feeling a big power drop-off when the car was running that hot ??coolant temps never were above normal.
Last edited by racruzzz; Dec 3, 2007 at 09:28 PM.
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From: Carlsbad Ca
Thread Starter
Intermediate
Joined: Mar 2007
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From: Corona CA
We were running with white and it was are first time out. The car was more then we could handle, but it was fun eating up all the other car on the straight felt like I was playing pac-man
Pro
Joined: Dec 2006
Posts: 643
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From: Salt Lake City, UT
Wow, that is very hot. I have a maggie but after running hard for 15-20 minutes, the highest I've seen my oil is 265. Coolant, like yours, was very low (200).
Safety Car
Joined: Jun 2004
Posts: 3,563
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From: Dallas Tx
The critical Defcon 1 temps are 320F on oil and 270F on trans. At those temps, the car will display warnings and start telling you bad things are about to happen.
Your oil getting in the 290s, while that is too hot, not really a critical dire situation. Synthetic can handle the 290s just fine for a short burst.
The trans though, you were within a few degrees of serious problems. Trans really don't like getting that hot.
If you do some track time again with no cooling system mods, leave the DIC on trans temp and take some cool down laps when it gets into the high 240s 250ish. You really don't want to get the trans anywhere near 270.
Next mods should be to the cooling system, bigger rad, oil and trans coolers...
Your oil getting in the 290s, while that is too hot, not really a critical dire situation. Synthetic can handle the 290s just fine for a short burst.
The trans though, you were within a few degrees of serious problems. Trans really don't like getting that hot.
If you do some track time again with no cooling system mods, leave the DIC on trans temp and take some cool down laps when it gets into the high 240s 250ish. You really don't want to get the trans anywhere near 270.
Next mods should be to the cooling system, bigger rad, oil and trans coolers...
Pro
Joined: Mar 2006
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From: Pa
I just had an evans high volume waterpump and ZO6 external oil cooler installed....what a difference. My temps are 40 degrees lower than normal with heads/cam and supercharger. I did hit 280 (oil)last year at Spring Mountain with just heads/cam and stock z51 oil cooler. I highly recomend the waterpump upgrade and external oil cooler