Looking for input from ZL1 owners who track theirs on road courses.

[Norm Peterson]

Originally Posted by ZO6 Bryan

They were getting pretty noisy. They would roar when braking very hard at all.
I am actually waiting on the pads to arrive so I can put it back together. I had the rotors turned and they came out OK. But the machine shop was not optimistic when they first looked at them.

Their lack of optimism may be well-placed. Hot spots are hardened spots that can go deeper than the amount of material removed, maybe deeper than the max removable.

I hope that's not the case here, but you may not get as many sessions out of them as the remaining amounts of machineable thickness might suggest.


Norm

[ZMEnow]

Originally Posted by E. Bryant

I've seen some fine cracking of the rotor face, but nothing deep enough to catch a fingernail. Here is the last set that came off the car:





I haven't had any issues with run-out, either.

Are you West or East side of MI. Where are you tracking Gingerman?

[CompulsiveZL1]

My 2013 has been tracked quite a bit at Laguna and Sonoma out here in CAli since I bought it. Its a great car! I am running a stock motor, exhaust, cooling system with the exception of a 5% lower pulley, roto-fab intake, Motul 600 dot4, catch-can and custom tune. The car has no issues with heat soak and/or defueling throughout the sessions and is exceptional to drive. I did install Eibach springs and invested in a good four wheel track focused alignment (which improved the experience 100 fold). The most notable upgrade was the addition of AP Racing Radical bbk for the front and rear. I can tell you this was huge, the improvement in late braking into the corners is almost racecar like - ability. We all know these cars are heavy and in my opinion the undersized rotors and calipers were a design flaw from the start. Good to be part of such a great group of car enthusiasts. Thanks Doug.

[E. Bryant]

Originally Posted by ZMEnow

Are you West or East side of MI. Where are you tracking Gingerman?

I'm on the west side, and Gingerman is indeed my usual spot.

[Stephen12ZL1]

Originally Posted by ZO6 Bryan

They were getting pretty noisy. They would roar when braking very hard at all.
I am actually waiting on the pads to arrive so I can put it back together. I had the rotors turned and they came out OK. But the machine shop was not optimistic when they first looked at them.

If you intend to use these rotors on the street, turning them is probably o.k. These rotors are junk if you use them for the road course after machining. A new set isn't insanely expensive as there are a few choices. You can get a new OEM set for sure or aftermarket slotted like EBC (and many others).

[Can'tHave2MuchHP]

Originally Posted by E. Bryant

I'm on the west side, and Gingerman is indeed my usual spot.

Hey, I was in Harbor Springs a few months ago (Mid-August) and a roaring white or silver ZL1 (Can't remember which color) passed me, can't quite tell what color your car is from the picture at the bottom of your screen but, it wasn't possibly you was it? It definitely was cammed and was really loud.

[E. Bryant]

Originally Posted by Can'tHave2MuchHP

Hey, I was in Harbor Springs a few months ago (Mid-August) and a roaring white or silver ZL1 (Can't remember which color) passed me, can't quite tell what color your car is from the picture at the bottom of your screen but, it wasn't possibly you was it? It definitely was cammed and was really loud.

My car is silver and indeed rather loud, but I don't think I had it up in that area any time recently.

[Mikamaro]

Originally Posted by CompulsiveZL1

My 2013 has been tracked quite a bit at Laguna and Sonoma out here in CAli since I bought it. Its a great car! I am running a stock motor, exhaust, cooling system with the exception of a 5% lower pulley, roto-fab intake, Motul 600 dot4, catch-can and custom tune. The car has no issues with heat soak and/or defueling throughout the sessions and is exceptional to drive. I did install Eibach springs and invested in a good four wheel track focused alignment (which improved the experience 100 fold). The most notable upgrade was the addition of AP Racing Radical bbk for the front and rear. I can tell you this was huge, the improvement in late braking into the corners is almost racecar like - ability. We all know these cars are heavy and in my opinion the undersized rotors and calipers were a design flaw from the start. Good to be part of such a great group of car enthusiasts. Thanks Doug.

Thanks Doug for the post, how big is this kit from AP? I mean they are 6 pistons like oem? Do you have a youtube channel like E.Bryant we can what you rip laguna or sonoma?

[Utjoel333]

I'm curious also on the above post about how this brake system is better than the ZL1 brembos. Bigger caliper? Bigger rotor? Slotted?


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[CompulsiveZL1]

Hi Guys! Here is the write up about the brake kit I installed on my car. They are truly unique! Thanks

https://blog.stillen.com/2015/04/cam...n-laguna-seca/

[KaBoom1701]

Originally Posted by CompulsiveZL1

Hi Guys! Here is the write up about the brake kit I installed on my car. They are truly unique! Thanks

https://blog.stillen.com/2015/04/cam...n-laguna-seca/

I just dont see them being $3200 better than our OEM Brembos......

[Utjoel333]

Originally Posted by KaBoom1701

I just dont see them being $3200 better than our OEM Brembos......

I agree. Seems like the whole article is a bunch of marketing words. No objective evidence.



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[Mikamaro]

Originally Posted by CompulsiveZL1

Hi Guys! Here is the write up about the brake kit I installed on my car. They are truly unique! Thanks

https://blog.stillen.com/2015/04/cam...n-laguna-seca/

What is the actual weight reduction they mentionned, do you know?

[KaBoom1701]

The stock ZL1 is number #13 in the 0-06 stopping list at 100 feet...

http://www.motortrend.com/news/20-be...nces-recorded/