2019 ZL1 1LE Time Attack Thread - Page 5

MikeEM1 · 04-08-2022, 12:43 PM

Quote:

Originally Posted by Mac7504

I spoke to Mike (was that you?) about getting one but wanted to see the installation instructions first, they wouldn't do it which was very off putting. They are here locally to me so I may stop by one say. Pretty speedy though I must say.

The owner's name is Mike also, so I'm sure you spoke with him. I don't work there, but definitely go there if you can and have them install it.
Reference my pics if you want that same setup. He had my car for a week to do it. There's still some small improvements to be made, but I'm very happy with the product.
One day when I have extra time, I will do the string and tape method and get a GoPro under there to see how much function is happening.

Mac7504 · 04-08-2022, 01:03 PM

Quote:

Originally Posted by MikeEM1

The owner's name is Mike also, so I'm sure you spoke with him. I don't work there, but definitely go there if you can and have them install it.
Reference my pics if you want that same setup. He had my car for a week to do it. There's still some small improvements to be made, but I'm very happy with the product.
One day when I have extra time, I will do the string and tape method and get a GoPro under there to see how much function is happening.

Ahhh gotcha, thanks.

I'd love to see that. I couldn't tell off my phone but are u running stock or aftermarket exhaust? I understand there are different variants for each.

Corbs09 · 04-08-2022, 01:37 PM

Quote:

Originally Posted by Mac7504

I spoke to Mike (was that you?) about getting one but wanted to see the installation instructions first, they wouldn't do it which was very off putting. They are here locally to me so I may stop by one say. Pretty speedy though I must say.

Keep me posted, I would be willing to buy one if pricing is somewhat reasonable.

Mac7504 · 04-08-2022, 01:41 PM

Quote:

Originally Posted by Corbs09

Keep me posted, I would be willing to buy one if pricing is somewhat reasonable.

I'll let you make that determination.

https://mfrengineering.com/collectio...-rear-diffuser

Corbs09 · 04-08-2022, 02:55 PM

Not terrible, but definitely not cheap

maybe that will be on the next round of mods.

synolimit · 04-08-2022, 09:33 PM

i still dont see the point. the car doesnt have a flat bottom so all the air thats going under the car is still going to go up and on top of the diffuser and get trapped in the bumper. some will stay down and get used but your just adding to your parachute like adding a rear snow plow to hang lower and scoop up even more air for the bumper.

Driv200 · 06-26-2022, 02:10 PM

Hey guys,

Love the thread. The ZL1 1LE has been a cad that has eluded me as I have been tracking other projects and never had a ZLE. 20+ years tracking hard b/c I enjoy it. Some NASA wins central region in my track prepped EVO IX RS.

Questions: (I’m shopping and can finally get my first 1LE project)
* is a 600HP NA SS 1LE better option than ZLE for track use? There is a new one for sale with this quoted engine package.

* Does any ZLE need an ice box to prevent heat soak?

* Does the Exorcist 1000HP in ZLE trim have any place on track?

SFV1LE · 06-26-2022, 11:11 PM

Quote:

Originally Posted by Driv200

Hey guys,

Love the thread. The ZL1 1LE has been a cad that has eluded me as I have been tracking other projects and never had a ZLE. 20+ years tracking hard b/c I enjoy it. Some NASA wins central region in my track prepped EVO IX RS.

Questions: (I’m shopping and can finally get my first 1LE project)
* is a 600HP NA SS 1LE better option than ZLE for track use? There is a new one for sale with this quoted engine package.

Answer>> Maybe yes, maybe no. Depends on your goals and style of driving. A 600 HP SS may have other mods like aero and suspension that already come with the ZLE package... so hard to say.

* Does any ZLE need an ice box to prevent heat soak?

Answer>> In stock form no, on warm CA days my ZLE hits the same top speed (~160) at the end of the front straight at Auto Club Speedway lap after lap.

* Does the Exorcist 1000HP in ZLE trim have any place on track?

Answer>> In my opinion, NO. If I was going to build a track focused ZLE I would go with a proven track shop like Katech etc, Magnuson 2650 package and maybe 750-800 WHP max on E85 to keep heat down. Maybe later add some MCS 3-ways or Ohlins TTX (GT4.R) and a bigger rear wing.

800 WHP will allow you to keep up with McLaren 765s on straights, there is no point to more power for high level road course work.

Driv200 · 06-26-2022, 11:40 PM

Thanks for reply. Agree with dedicated track build. Since my car is duel purpose, I am looking at $50k for 600HP SS 1LE or $75k for stock ZLE.

What about heat soak on stock ZLE set up?

BROCKgoFAST · 06-27-2022, 08:22 AM

Quote:

Originally Posted by Driv200

Thanks for reply. Agree with dedicated track build. Since my car is duel purpose, I am looking at $50k for 600HP SS 1LE or $75k for stock ZLE.

What about heat soak on stock ZLE set up?

Keep it relatively stock and the ZLE wont have the heat soak issues. hey start to have issues when you up the PSI on the supercharger since its working harder.

wakespeak · 06-27-2022, 09:59 AM

Quote:

Originally Posted by Driv200

Thanks for reply. Agree with dedicated track build. Since my car is duel purpose, I am looking at $50k for 600HP SS 1LE or $75k for stock ZLE.

What about heat soak on stock ZLE set up?

I think the stock ZLE car needs nothing if you track, and you have a warranty. Even match to GT3s in my experience except in some drag race sections of the track (they have more gears with the PDK).

I added an intercooler tank more to make sure there is no air in the system. The air can expand and cause cavitation, which shuts down the coolant pump. The car is otherwise fine even in 100F+ air temps. NA cars make less power then too, so its a wash to me.

SFV1LE · 06-27-2022, 03:53 PM

Quote:

Originally Posted by wakespeak

I think the stock ZLE car needs nothing if you track, and you have a warranty. Even match to GT3s in my experience except in some drag race sections of the track (they have more gears with the PDK).

I added an intercooler tank more to make sure there is no air in the system. The air can expand and cause cavitation, which shuts down the coolant pump. The car is otherwise fine even in 100F+ air temps. NA cars make less power then too, so its a wash to me.

I agree with this, my experience also (except intercooler tank, I don't have that)

What are symptoms of having some air in system? I have never bled the system on my 2018 ZLE.

Corbs09 · 06-29-2022, 09:51 AM

Quote:

Originally Posted by SFV1LE

I agree with this, my experience also (except intercooler tank, I don't have that)

What are symptoms of having some air in system? I have never bled the system on my 2018 ZLE.

Extreme heat/heat soak

06-26-2022, 02:10 PM	#63
Driv200 Drives: 2022 C8 Z51 Join Date: Feb 2018 Location: OK Posts: 72	Hey guys, Love the thread. The ZL1 1LE has been a cad that has eluded me as I have been tracking other projects and never had a ZLE. 20+ years tracking hard b/c I enjoy it. Some NASA wins central region in my track prepped EVO IX RS. Questions: (I’m shopping and can finally get my first 1LE project) * is a 600HP NA SS 1LE better option than ZLE for track use? There is a new one for sale with this quoted engine package. * Does any ZLE need an ice box to prevent heat soak? * Does the Exorcist 1000HP in ZLE trim have any place on track? __________________ Owner: Shifts & Giggles for Private Track Days in OK/TX/KS. COTA, MSR Cresson, Eagles Canyon, Hallett, Heartland Park Topeka. 2006 EVO IX RS Track Prepped 2020 Porsche Cayman 718 GT4 2022 Corvette C8 Z51 with mods 2024 = Always come back to ZLE. Actively Looking.

06-26-2022, 11:40 PM	#65
Driv200 Drives: 2022 C8 Z51 Join Date: Feb 2018 Location: OK Posts: 72	Thanks for reply. Agree with dedicated track build. Since my car is duel purpose, I am looking at $50k for 600HP SS 1LE or $75k for stock ZLE. What about heat soak on stock ZLE set up? __________________ Owner: Shifts & Giggles for Private Track Days in OK/TX/KS. COTA, MSR Cresson, Eagles Canyon, Hallett, Heartland Park Topeka. 2006 EVO IX RS Track Prepped 2020 Porsche Cayman 718 GT4 2022 Corvette C8 Z51 with mods 2024 = Always come back to ZLE. Actively Looking.

04-08-2022, 02:55 PM	#61
Corbs09 Drives: Chevy Camaro ZLE Join Date: Mar 2022 Location: Dallas, TX Posts: 112	Not terrible, but definitely not cheap maybe that will be on the next round of mods.

04-08-2022, 09:33 PM	#62
synolimit Drives: 22 ZL1 1LE A10 Join Date: Feb 2022 Location: Ohio Posts: 233	i still dont see the point. the car doesnt have a flat bottom so all the air thats going under the car is still going to go up and on top of the diffuser and get trapped in the bumper. some will stay down and get used but your just adding to your parachute like adding a rear snow plow to hang lower and scoop up even more air for the bumper.

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