terps

Sorry to bring up an often hotly contested and sometimes argued issue. I've done lots of reading on the cooling issue already, but my intended use for the car doesn't fall neatly into either the road-only or track-only crowd.

My intended use for the Z06 (with manual transmission) is mostly road use, but also some hard canyon driving (with lots of tight twisties) lasting anywhere from 15-30 minutes. In your experiences, would I be susceptible to engine or transmission overheating during my canyon runs?

Thanks for your input.

5thGear

You will have no problem what so ever. I pushed my 2016 Z06 for 25 minutes in 88F ambient shifting at red line on the track with no issues and also 20 minutes hard canyon runs in 95F ambient also with no issues. M7 is an awesome choice. I had GMPP secondary radiator that really helps on the track. I don't think you will need it for canyon drives.

OnPoint

You'll be arrested or killed long before you have any overheating issue with your stated usage.

schaibaa

I would say it is extremely unlikely. The M7 cars (mine included) tend to do much better with overheating than thr A8 cars. There is one member that claims he can overheat an M7 on a public road - I don't think he has posted any PDR evidence but he claims to hold several SCCA lap records in various classes. There are lots of people on here with M7 cars running very competitive lap times, maybe 1-3 seconds off of pro driver times and are doing fine with cooling.

Worst case scenario - add the auxiliary radiator and that is all it will take.

OLD_GOAT

capevettes

My C7Z actually runs cooler than my C6Z did. Spirited street driving, similar to what you describe, is what I do. You will love it with the M7

JDMUSCLE

In my M7 I've done more than 20 mins of very hard driving in 90F temps and all I saw was around 220-225F coolant temps. I didn't monitor the engine oil temp. So I don't think you'll have any issues either.

Colonel

Nothing to worry about.

dar02081961

[QUOTE=OLD_GOAT;1592871553]
QUOTE]

Now that's funny.

Although I am sure this particular OP meant no harm, I had to laugh at this one.

rbartick

No!!!!

427Z0SX

Which one should I pay more attention to, engine oil temp or coolant temp? I have both displayed, and found that after a long hard canyon drive, they are both about the same, maybe 5 degrees different between the 2.
Thanks,

Bill Dearborn

I have a 15Z with the GMPP Secondary Radiator added. I haven't come close to overheating the engine. I can't see how canyon driving gets anywhere near as hard as track driving. There is no way you can push a car on the highway as hard as you can on a track. There are just too many blind spots, dangerous things along the road and other vehicles to be safe trying go as fast as you can on a track. If you can't see around a corner on the highway there is no way you can go into it at high speed like you can on a track with a flagger standing at corner entry telling you the track is clear ahead of you. At tracks across the country there are plenty of somewhat blind turns where cars approach at speeds in excess of 150 mph braking to 90 to 95 mph and if there wasn't a flagger standing at corner entry nobody would have the cajones to drive in there at near triple digit speeds not knowing if the track is clear or not.

You won't overheat an M7 during canyon driving.

Bill

lordofwar

so called cooling problem for non track car is a non issue.buy the z and have a ball with it like a vast majority do.

spearfish25

I love track days and don't get to do enough of them. But I street drive my 'track' cars. With 99% of my miles being street miles, I'm loving the daylights out of my Z. If I overheat on track I'll either dial things back and still have fun or consider one of the two aftermarket cooling options (or whatever GM musters if it works).

lordofwar

you hit the nail on the head.logical answer,ifyou have a problem fix it or don't do it.that is what the other people should do who complain about overheating on a race track.

6104696

This is also where I am at. I will add that when I was at Spring Mountain earlier in the year I was doing everything that I could to overheat a manual ZO6 in mid 70 degree weather. I could not do it. And the instructors, who were a far sight better than i around the track, also had no overheating problems. I am not saying that the overheating issues don't exist, but I have not experienced any (this is the cue for the naysayers to attack my driving abilities; have at it). There is just no way that you could encounter these problems in street driving, no matter how hard you try.

b4i4getit

If not clear where your canyon road driving is but if you are over 10,000 ft altitude and in hot weather you may have a problem. Turbocharged and supercharged engines lose about 1.5 percent of their power for every 1,000 feet of altitude and can overheat.

RussM05

2 weeks ago at Spring Mountain, I drove a manual transmission Z06 in 90-100° temps for 2 days. On one session, I saw 277° oil temp and 260° coolant temp. All it did was shut down the A/C. And, yes, I was driving it as hard as possible in 3rd and 4th gear.

b4i4getit

Spring Mountain Motorsports is in Nevada and not even 3,000 ft elevation. If the OP drives his car in the Mount Evans Scenic Byway in Colorado he can hit 14,000 ft elevation which could give him problems in hot weather.

HighBeta

Perfect.



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