View Poll Results: If you've Overheated What is Your Stage Aero 1, 2 or 3
Voters: 348. You may not vote on this poll
ZO6 overheating issues ***MEGA Merge***
03-27-2015, 10:58 AM
#1841
Race Director
Also in regards to the oil; 18psi would be about right at those temps (bringing it back to idle). Its not that the oil breaks down, but has lost all its ability to combat viscosity loss. This is a quick way to wipe some bearings.
I'm starting to get afraid on modding anything at this point. I can only imagine the uphill battle I'd have to fight through GM if I killed a motor and had a K&N air filter on it
03-27-2015, 11:07 AM
#1842
Safety Car
Such is life with a blower. I love everything about the new Z06 except the forced induction and the heat issues.
03-27-2015, 11:34 AM
#1844
Chris is my brother and Greg is friend. We track our cars together mercilessly. I only commented because we thought it was funny that someone was saying that they didn't believe that the car was there that day. I know that the world is filled with 14 year old trolls, but it is not uncommon for it to be 90-100 degrees on a track at during the summer where we drive. My Cayman R would start to run too hot for comfort on a 100 degree day. I would blast the heater to use that core to get rid if some of it. The fix was a center radiator kit. I am sure there will be a solution. It might be as simple as sticking to manual mode and avoiding too many redline shifts. Who knows.
Last edited by DaveN007; 03-27-2015 at 11:45 AM.
03-27-2015, 11:36 AM
#1845
Melting Slicks
Keeping cool under pressure.
Additional cooling elements include larger front fender vents and unique air blades over the inlets on the rear fenders, which force about 50 percent more air into the cooling ducts for the transmission and differential coolers than those on the Stingray. To cope with the additional airflow, the Z06 has also has larger rear-fascia openings than the Stingray.
Standard front and rear brake-cooling ducts, including Z06-signature rear ducts integrated in front of the rear fender openings, are also part of the functional design changes.
Additional cooling elements include larger front fender vents and unique air blades over the inlets on the rear fenders, which force about 50 percent more air into the cooling ducts for the transmission and differential coolers than those on the Stingray. To cope with the additional airflow, the Z06 has also has larger rear-fascia openings than the Stingray.
Standard front and rear brake-cooling ducts, including Z06-signature rear ducts integrated in front of the rear fender openings, are also part of the functional design changes.
So, it appears we have the following heat exchangers and ducting to get air to them--s/c intercooler, radiator, oil cooler, trans cooler, diff cooler (trans and diff coolers are mounted in the back); and we have ducting for funneling cool air to the brakes.
03-27-2015, 11:39 AM
#1846
Just the 500 mile oil change (M1). Car has about 1000 miles on it.
Not Z07 package. Stage 1; SuperSports. In the video it does NOT say Track: XYZ-- plus the squiggly lines were flashing a fair bit. I think this means he was in Sport mode and didn't realize it (he said it was in Track, but it appears not). Also, even though lap timer didn't work on video, a sample lap with no traffic he did about a 1:50, so not like he got everything dialed in yet (this is his first session on track with car).
Not Z07 package. Stage 1; SuperSports. In the video it does NOT say Track: XYZ-- plus the squiggly lines were flashing a fair bit. I think this means he was in Sport mode and didn't realize it (he said it was in Track, but it appears not). Also, even though lap timer didn't work on video, a sample lap with no traffic he did about a 1:50, so not like he got everything dialed in yet (this is his first session on track with car).
Last edited by ChrisN123; 03-27-2015 at 11:47 AM.
03-27-2015, 11:52 AM
#1847
Advanced
Member Since: Jan 2015
Posts: 58
Likes: 0
Received 0 Likes
on
0 Posts
Not to mention there were likely dozens of other cars on track this week without issue. So perhaps you meant to say 99% of the street cars WON'T have issues?
Now the question is, why is anyone apologizing for this?
03-27-2015, 12:01 PM
#1848
It's going to be a looooong summer. Thunderhill at 100 degs, anyone?
Last edited by ChrisN123; 03-27-2015 at 12:33 PM.
03-27-2015, 12:36 PM
#1850
From chevycorvette.com:
So, it appears we have the following heat exchangers and ducting to get air to them--s/c intercooler, radiator, oil cooler, trans cooler, diff cooler (trans and diff coolers are mounted in the back); and we have ducting for funneling cool air to the brakes.
So, it appears we have the following heat exchangers and ducting to get air to them--s/c intercooler, radiator, oil cooler, trans cooler, diff cooler (trans and diff coolers are mounted in the back); and we have ducting for funneling cool air to the brakes.
Take a look at page 87 in particular
http://f80.bimmerpost.com/forums/att...6&d=1406475520
03-27-2015, 12:37 PM
#1851
Drifting
03-27-2015, 12:45 PM
#1852
Melting Slicks
Chris is my brother and Greg is friend. We track our cars together mercilessly. I only commented because we thought it was funny that someone was saying that they didn't believe that the car was there that day. I know that the world is filled with 14 year old trolls, but it is not uncommon for it to be 90-100 degrees on a track at during the summer where we drive. My Cayman R would start to run too hot for comfort on a 100 degree day. I would blast the heater to use that core to get rid if some of it. The fix was a center radiator kit. I am sure there will be a solution. It might be as simple as sticking to manual mode and avoiding too many redline shifts. Who knows.
Last edited by skank; 03-27-2015 at 12:58 PM.
03-27-2015, 01:47 PM
#1853
Melting Slicks
I had my 911 Turbo S out there on Tuesday, ran 6 sessions, 25 min apiece. Not a single issue. On stock tires I ran consistent 1:40.xx which is moving. I've run similarly in a McLaren 12C, Ferrari 458 Spider, and my old Cayman. Never had a heating issue, even in 90+ ambient temps.
Not to mention there were likely dozens of other cars on track this week without issue. So perhaps you meant to say 99% of the street cars WON'T have issues?
Now the question is, why is anyone apologizing for this?
Not to mention there were likely dozens of other cars on track this week without issue. So perhaps you meant to say 99% of the street cars WON'T have issues?
Now the question is, why is anyone apologizing for this?
I had a 2009 Cayman S and I could overheat it on track. I began to short shift and keep an artificial speed limit (120) to keep heat down overall and to save my brakes, which could also turn to mush if I pushed it. Nice handling car, though.
Last edited by quick04Z06; 03-27-2015 at 01:54 PM.
03-27-2015, 01:49 PM
#1854
Glad you have had good luck with your cars on track. I would surmise that Ferraris and McLarens, being very, very expensive and very limited production, might be able to take the heat bone-stock.
I had a 2009 Cayman S and I could overheat it on track. I began to short shift and keep an artificial speed limit (120) to keep heat down overall and to save my brakes, which could also turn to mush if I pushed it. Nice handling car, though.
I had a 2009 Cayman S and I could overheat it on track. I began to short shift and keep an artificial speed limit (120) to keep heat down overall and to save my brakes, which could also turn to mush if I pushed it. Nice handling car, though.
03-27-2015, 02:05 PM
#1856
Racer
03-27-2015, 02:07 PM
#1857
Sorry I had to say it
You had it coming
You shouldn't have made the comment about only low quantity production exotics that cost 200k+ can deal with the overheating....
/Sense of Humor
03-27-2015, 02:14 PM
#1859
Just for the record, I went back to the PDR video and timed all the laps. He was learning/getting faster at a quick clip and the lap that he overheated on was a 1:45, which is a much brisker pace than the 1:50 lap I reported above.
Still, no excuse for overheating, IMHO.
If the excuse is that the shift logic on the A8 keeps the revs higher than is sustainable above certain ambient temps on track (for measurable but not material performance edge over M7), then that sounds like a software bug. If you have the car in "Track" mode and the PDR in "lapping," it would seem that the car should (perhaps in all but the no nannies / ***** out mode) choose a set of operating parameters that are sustainable....
Still, no excuse for overheating, IMHO.
If the excuse is that the shift logic on the A8 keeps the revs higher than is sustainable above certain ambient temps on track (for measurable but not material performance edge over M7), then that sounds like a software bug. If you have the car in "Track" mode and the PDR in "lapping," it would seem that the car should (perhaps in all but the no nannies / ***** out mode) choose a set of operating parameters that are sustainable....
03-27-2015, 02:22 PM
#1860
Melting Slicks
I'm guessing that was when you weren't actually waiting in the pit for your engine to cool down from overheating.
Sorry I had to say it
You had it coming You shouldn't have made the comment about only low quantity production exotics that cost 200k+ can deal with the overheating....
/Sense of Humor
Sorry I had to say it
You had it coming
You shouldn't have made the comment about only low quantity production exotics that cost 200k+ can deal with the overheating..../Sense of Humor
