[big dave]

TravisLambert isn't the only one who has experienced heat soak at the drags. People on here thought it was funny I was using portable fans to help cool the intake and engine between rounds at the strip. As long as there is no flow through the intercoolers, there will be heat soak. I'm pretty sure that making a few passes in a row at the drag strip will yield less of a loss in et than making one pass, and then sitting for a few minutes to let it cool off.

[Infern0]

Originally Posted by big dave

TravisLambert isn't the only one who has experienced heat soak at the drags. People on here thought it was funny I was using portable fans to help cool the intake and engine between rounds at the strip. As long as there is no flow through the intercoolers, there will be heat soak. I'm pretty sure that making a few passes in a row at the drag strip will yield less of a loss in et than making one pass, and then sitting for a few minutes to let it cool off.

lol, I wasn't laughing at you I was legitimately curious if it was better than letting the car sit and run a little longer giving all of it's coolers.

[travislambert]

Originally Posted by Infern0

lol, I wasn't laughing at you I was legitimately curious if it was better than letting the car sit and run a little longer giving all of it's coolers.

I've wondered the same thing. As long as the fans are running I'd think it would help. The problem is you'd have to keep the car running the entire time between rounds which might help with the IAT2s, but the engine temps will be higher than ideal for a drag strip pass.

I think turning the car off, setting up a big fan blowing onto the center and driver's side heat exchangers, and forcing the intercooler pump on would be a lot better though.

[travislambert]

Originally Posted by big dave

I'm pretty sure that making a few passes in a row at the drag strip will yield less of a loss in et than making one pass, and then sitting for a few minutes to let it cool off.

Yep. I have the time slips from June 3rd as evidence. With each pass my ETs kept getting worse. Once I ran a 13+ ET I said f-it and parked the car for 2 hours with the hood up to let it cool. My next pass was right back in line with my first/best passes.

The car really needs a cool down mode like the dodge demon where it will run the fans and coolant pump with the engine off.

[Infern0]

Originally Posted by travislambert

I've wondered the same thing. As long as the fans are running I'd think it would help. The problem is you'd have to keep the car running the entire time between rounds which might help with the IAT2s, but the engine temps will be higher than ideal for a drag strip pass.



I think turning the car off, setting up a big fan blowing onto the center and driver's side heat exchangers, and forcing the intercooler pump on would be a lot better though.

Well I drive it to the track anyway, so I'm not sure the temps would exceed whatever they were at during normal driving if you're just idling.

[camaro5]

Originally Posted by Michigan1LTRS

So, what is the difference between the Z06 and the ZL1 in terms of cooling? Same engine, ZL1 has been praised on the track for its cooling capabilities.

The Bugatti Veyron quite famously came complete with 10 heat exchangers. That 1,001-horsepower projection of Ferdinand Piëch’s ego made so much heat it needed 10 intercoolers to keep it from boiling.

The 650-horsepower 2017 Chevrolet Camaro ZL1 has 11. Insert Spinal Tap joke here.


Here’s the part Chevrolet doesn’t want me to say: In the Z06, the LT4 has cooling issues. The mighty Corvette’s heart heat soaks or overheats.

Remember those 11 heat exchangers I was talking about? The Camaro ZL1 will not overheat. I tried, but even after six sets of rear tires in four days—not joking—the thunderous V-8 never so much as simmered.

Two of those 11 heat exchangers are actually the intercoolers that straddle the supercharger. They are redesigned and repositioned for ZL1 duty.

http://www.motortrend.com/cars/chevr...e-squad-goals/

Camaro Team: Nailed it!vvvvvvvvvvvvvvvvvvvvvvvvvvv

[travislambert]

Originally Posted by Infern0

Well I drive it to the track anyway, so I'm not sure the temps would exceed whatever they were at during normal driving if you're just idling.

It will absolutely heat up more idling than driving because the airflow from the fans is not as good as the airflow from the normal driving. That's why it's so common for parade vehicles to overheat.

[DFW1LE]

I've often felt it takes several thousand miles for an engine to fully break in and loosen up. While it might be trivial, I wonder how engine temps are effected as the frictional losses decrease over time from a new low mileage engine?

[Infern0]

Originally Posted by travislambert

It will absolutely heat up more idling than driving because the airflow from the fans is not as good as the airflow from the normal driving. That's why it's so common for parade vehicles to overheat.

Ahhh good point.

[RicknCheryl]

I'm confident that our ZL1's do MUCH better than the late-model Corvettes in dissipating heat, but believe there's merit in the suggestion that there could be added benefit in larger coolers that are thermostat-controlled and allowed to run regardless of whether the engine is running.

I made 15 passes with my ZL1 at the Arkansas Mile earlier this month and saw the impact of heat build-up firsthand. With afternoon temps around 91 degrees and a wait of 15 minutes to an hour between runs, I saw a definite drop-off in performance. Putting a 20-pound bag of ice on top of the SC between runs got me back about 2mph at the mile mark. Talked with several drivers who had installed intercooler chiller systems that circulate iced water during their runs and they claimed to get 4-6mph at the mile.

[*007]

Originally Posted by BeckyD@RodgersChevrolet

I have had mine to 4 events -

Most recently - Monday - at Mid-Ohio.

No issue -


Becky

BECKY! 4 already! Is that where you let out your aggression? You are so amazing... living life to the fullest!

[PinHead]

Originally Posted by mig7410

Anybody tracking there ZL1. With all the problems of the ZO6 and the heatsoak I was wondering how the ZL1 does on the track. I have a 1LE now and would like to get the new ZL1-1LE but want to make sure it can this is all fixed up.
I already traded in a 2015 ZO6 for the 1LE which I love.

If you have not yet added this important tool to your Track Kit get on it.

You should be using a handheld IR Thermometer to measure AND LOG some of the follow temps;

1) Engine Block
2) Radiator
3) Transmission/Clutch Assy
4) Coolant Lines
5) External Coolers
6) Rear Axles
7) Brake Assy/Rotors
8) TIRES(graduated)
9) Drive Belts
10) Forced Induction, (graduated)
11) Exhaust Manifolds(independent)
12) Driver
13) Wheels
(If I've forgot something please feel free to edit as I haven't had my coffee yet)

Keeping a log of both the location, time and ambient temps can tell you alot about how each component is performing or not performing. An EGT Temp can be handy when tuning or diagnosing an engine.

Here's a good handheld IR
FLIR TG54 Spot Infrared Thermometer

DON'T FORGET TO LOG YOUR DATA