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Gonna add cooling system "fix/hack" threads too I suppose...make it easy for the track guys to figure out how to do a track day without limp mode involved.
The is a cool video of Laguna Seca that shows speeds, lap times, etc. Note my best laps time was 1:40, although my best time has been 1:37. When I get the C7 Z06 on the track, assuming the car will stay under 92dbs without lifting between turns 5 & 6, I assume the time should be about 1:34.
-Track = Thunderhill
-Layout (if more than 1) = Cyclone/Over the top
-Transmission Type = M6
-Driving Mode/Settings = Sport ont he dial. All assists off
-Aero Package/Option Package/Setup = 2011 Z06 with Z07 package but no aero package (this was possible only in 2011)
-Tires = Michelin Sport Cup 2
-Conditions/Temp = 60f
-Modifications, if any = Poly Bushings. Alignment
-Notes (issues experienced, failures, passenger, anything pertinent that you feel affected your time, etc) = Trackday #11. Possible to do 53's in the car with better driver
Is this you? That's a great lap and driving! Cup2's or super sports?
No, that isn't me driving. I have only had the chance to do the full 5 mile course in the Z06. Time not impressive while learning. Lol. Car is on Cup2s in this video. I have only driven Supersports so far. My best for the 3 mile is a 2:08 in my previous car (Cayman R) on older Cups. Looking forward to seeing what I can do in the Z06. I'm not sure I'll ever be a 2:00 driver in any car. As you know, that is fast. The C6 Z06 continues to be a world class car on the track with a good driver.
-Track ==================== Watkins Glen
-Layout (if more than 1) ========= Boot
-Transmission Type ============ M7
-Driving Mode/Settings ========= Sport 1
-Aero Package/Option Package/Setup = Stage 1, Non-Z07, Stock alignment
-Tires ==================== Pilot Super Sport Tires
-Conditions/Temp ============= 60 degrees
-Modifications, if any =========== None
-Notes =========== Just some trafffic.. lap screen showed 2:11 earlier but never found on PDR data
-Track ================== Lime Rock Park
-Layout (if more than 1) ======= Full Non Chicane
-Transmission Type========== M7
-Driving Mode/Settings ======== Sport 1
-Aero Package/Option Package/Setup = Stage 1, Non-Z07, Stock coolant and alignment
-Tires ================== Pilot Super Sports
-Conditions/Temp =========== 70 degrees about
-Modifications, if any========= None
-Notes ========= Had Passenger but with my weight every run like 2 people in the car lmao --
car stayed cool 221 coolant 264 oil maxes
-Track ================== Pocono Raceway
-Layout (if more than 1) ======= IMSA
-Transmission Type========== M7
-Driving Mode/Settings ======== Sport 1
-Aero Package/Option Package/Setup = Stage 1, Non-Z07, Stock coolant and alignment
-Tires ================== Pilot Super Sports
-Conditions/Temp =========== 84 degrees
-Modifications, if any========= None
-Notes ========= car got really HOT 252 Coolant , 293 Oil maxes (like this on best lap i could feel car slower ) .. I did have A/C on.. now that i think.. OOPS!
Video Lap Time 1:34.99
PDR Lap Time 1:35.08
-Track: PittRace
-Layout (if more than 1): Short (original) Course
-Transmission Type: Manual 7 speed
-Driving Mode/Settings: Sport
-Aero Package/Option Package/Setup: Level 1 Aero / 2LZ / Track Setup
-Tires: Micheline Pilot Sport Cup 2
-Conditions/Temp: not sure - low 70's, dry
-Modifications: Halltech Stinger CAI, Mobile 1 15W-50, Torque Brake fluid, track alignment
-Notes: Only my third day on track with the Z, third session of the day - I somehow forgot to hit record on the PDA until just about 1/2 way into the session - the car is capable of much, much more, attaching screen shots of specs / data from PDA
The is a cool video of Laguna Seca that shows speeds, lap times, etc. Note my best laps time was 1:40, although my best time has been 1:37. When I get the C7 Z06 on the track, assuming the car will stay under 92dbs without lifting between turns 5 & 6, I assume the time should be about 1:34.
Thanks for the posting! If you could, can you add some details of what we're seeing here. Is this a C7Z (safe to assume), what level of aero, what tire, any mods, etc. There is a format on the first page that allows me to add this for quick reference.
Team OGI and Greg Quillen both added...thank you for your contribution...please add any further track days you guys do. We want any and all data of heat issues, ambient temps and track time impact (if any) that is experienced. We'd like to gather reliability info, gather all the people who often track so others can ask questions, etc.
Thanks much for posting all of this. Beautiful job of driving by both of you in beautiful cars. Couple of things I find interesting and very informative. Greg your data numbers show no temp problems until 84 F, I believe. That's exactly the temp, I believe TJ said, over which, one could expect possible xs heat and looks like your up into the 290s on oil at this point.
TeamOGI, I notice traction warning light, particularly in some of the turns, and in your data the tire pressures are over the 40 psi range. This is the tire pressure level at which "Lawdog149" spun at RA. I think the starting pressure for the super sports, according to others, are optimum at about 28 depending on ambient track temps. For the cup 2s, I think about the same.
Fun vids and you both make me want my car. Best regards. DN
Doc - Thanks for the feedback - I have been pretty **** about getting all the settings to match Chevy's recommendations - The owner's manual says (section 10 pg 57) to set the tires to 38 PSI cold which is where I started. Are others having issues at pressures above 40 when hot? I did see that the tire color (on the dash video display) turned to red ("hot") during the run - 1st time I had seen that over the three track days that I have experienced.
Thanks much for posting all of this. Beautiful job of driving by both of you in beautiful cars. Couple of things I find interesting and very informative. Greg your data numbers show no temp problems until 84 F, I believe. That's exactly the temp, I believe TJ said, over which, one could expect possible xs heat and looks like your up into the 290s on oil at this point.
TeamOGI, I notice traction warning light, particularly in some of the turns, and in your data the tire pressures are over the 40 psi range. This is the tire pressure level at which "Lawdog149" spun at RA. I think the starting pressure for the super sports, according to others, are optimum at about 28 depending on ambient track temps. For the cup 2s, I think about the same.
Fun vids and you both make me want my car. Best regards. DN
Thank you.. i try.. just a beginner .. this is my second year tracking a car
the over heating.. it didnt help i was running 3/4 of the oval where you at full throttle most of the lap.. so im sure that generates more heat.. no time to cool..
WeaponX has Dewitt Radiator, and a Heat exchanger i might do if i get futher problems.. i did want to raise the hp/..
He i think his stability light came on because he was in regular mode. not a PTM like sport 1.. I know i had stability kicking in constantly once when i looked and i had regular traction control and stability on..
but yeah 40psi pressure going to make you have less traction available.. i start at 26psi cold then play with it from there.. I shoot for 34-35 hot.. but have hit 36 to 37 plenty of times as you can see with tires getting hot..
PS side not.. as per GM.. I changed my radiator fluid out to 20% coolant 80% distilled water and water wetter... lets see whats happens tomorrow..
Last edited by Greg Quillen; 05-17-2015 at 03:33 PM.
Pittrace North definitely works the left front tire hard. I've run there when the surface temp was mega hot...you gotta really watch your pressures on the left front as the day progresses to afternoon or your tires will be gone...lol.
Thank you.. i try.. just a beginner .. this is my second year tracking a car
the over heating.. it didnt help i was running 3/4 of the oval where you at full throttle most of the lap.. so im sure that generates more heat.. no time to cool..
WeaponX has Dewitt Radiator, and a Heat exchanger i might do if i get futher problems.. i did want to raise the hp/..
He i think his stability light came on because he was in regular mode. not a PTM like sport 1.. I know i had stability kicking in constantly once when i looked and i had regular traction control and stability on..
but yeah 40psi pressure going to make you have less traction available.. i start at 26psi cold then play with it from there.. I shoot for 34-35 hot.. but have hit 36 to 37 plenty of times as you can see with tires getting hot..
PS side not.. as per GM.. I changed my radiator fluid out to 20% coolant 80% distilled water and water wetter... lets see whats happens tomorrow..
Please come back with all your data/results so I can document what works and what doesn't, etc. Thanks!
"If reduced performance is
experienced during track events or
competitive driving, turning off the
A/C will help to improve engine
performance.
Maintain a mixture of 40%
DEX-COOL coolant and 60% clean,
drinkable water to optimize engine
performance."
i did have a/c on too.. it was hot.. ****..
Dealer told me go 20% coolant.. will give corrosion protection and freeze protection to 15F ..
05-16-2015, 04:14 PM
