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It's good to shut down the car at those temperature levels.
Things I would check:
- Are the radiators clear of road debris?
- Do you have radiator screens? Some of the designs are very restrictive and actually increase operating temperatures
- Is the bumper bottom behind the center radiator fully cut out. It can be cut quite a bit (see below)
- Do the operating temperatures go down as you turn the cabin heat on?
- Are you running both radiator fans? If you use the car mostly on the track, you can actually remove one radiator fan.
Ah, yes I was in "C" as well. You have this totally "stealth" black 997.2 GTS with a cup wing - right?
I was in the Riviera Blue 997.2 C4S
Good to hear I was not alone with the high temps
Yep. That’s me in front of you, dragging ***, slowing you down 😂
that AIM Solo toy you have looks really cool. Would you recommend that model for a track nanny?
I texted with my mechanic while I was at the track and he told me to call it a day if the temp goes over 265~270, which I did
I believe at 275 the oil starts to shear and I don't need a 3rd ride in the cab of a flatbed truck from Laguna back home
Yeah, I won't be going to B'Willow or T'Hill this year for exactly these reasons...
Im having my engine oil and PDK oil replaced and sent off to analyze soon. I’m running Amsoil in both. When I google “track oil temps”, I get all kinds of conflicting info. Some peeps say 275° is fine as long as it’s kept under 300° and is fresh high quality oil. I wonder if it’s possible to go up to a 50 weight oil in our cars? I know the Dry sump GT3 engines will accept 50 weight.
Not sure if 50 weight will protect better or worse, as flow rate would be different.
I would love to find somebody Who runs in the PCA spec 997 class and find out what their temperatures are like during a hot race
so far, this is the best info I can come with in regards to oil temps.
When I google “track oil temps”, I get all kinds of conflicting info. Some peeps say 275° is fine as long as it’s kept under 300° and is fresh high quality oil.
That's crazy talk.
If you are looking for a comparison to a 997 race car keep in mind that most of us have both radiator fans and shrouds removed. That's good for at least 30 deg F but not practical for the street. I rarely see above 235 F on the oil temp and we run very coarse screens that don't restrict airflow.
Yep. That’s me in front of you, dragging ***, slowing you down 😂
that AIM Solo toy you have looks really cool. Would you recommend that model for a track nanny?
Hey, I deliberately posted a screenshot which could swing either way: You just having passed me or I ready to pass you :-)
The AIM Solo is great if you're an engineer who loves deciphering squiggly lines.
If I were in the market now I'd get a Garmin Catalyst.
Hey, I deliberately posted a screenshot which could swing either way: You just having passed me or I ready to pass you :-)
The AIM Solo is great if you're an engineer who loves deciphering squiggly lines.
If I were in the market now I'd get a Garmin Catalyst.
thanks for the recommendation. I think I’ll get one of the Garmin’s soon
Oil temps > 275 is where mostly everyone seems to draw the line
I'll remove the screens and open up the lower cutout
I'll hold off on replacing the waterpump at this time
I need a GT3 (sigh)
- Open the lower cutout before you start removing the screens (make incremental changes)
- I race these cars and my shops have always recommended drawing the line at 260/265
- Turn on your cabin heat if your temperature rises too much
The last time I took my 997.1 to Chuckwalla, my oil temp gauge pushed passed the 250 mark, I'd do a cool down lap and drive around the pits to do a proper cool down. I would get about 2-3 good laps before the oil temp would rise. I was the B group and the only mod I have are Eibach springs.
It was unfortunate that I couldn't get full sessions but for my next HPDE I'm going to have a deep sump, 3rd radiator, aero bumper with proper venting, an oil cooler and a DSC controller. I feel like these should help.
There are folks in the 996 world that have wired up a switch to turn on the high speed fans at will. While the cup cars don’t even have fans, they are much faster cars that will be able to cool better (more airflow), the stock-ish 996/7s can benefit from high speed fans anytime the vehicle speed is under 40mph, such as slow turns and cool down laps.
06-11-2022, 04:12 PM
