Question for SS 1LE owners who Track at Laguna

Calcanuck · 07-23-2019, 11:37 PM

I have been to Laguna in my Camaro for 3 different track days now. I noticed that under heavy braking into turn 2 the back end gets light squirrelly. I don’t remember my 911 getting that squirrelly, I guess there are some advantages to have the motor over the rear wheels

.
I have an SS with the 1LE suspension upgrade, reprogrammed MRC, factory big brake kit, and Zl1 wheel and tires. I have been thinking of adding the 1LE the Rear trailing links and Rear Knuckle to see if it helps settle the car down under heavy braking.
What I am wondering is do SS 1LE cars get squirrelly in this braking zone as well? I realize this is a down hill braking zone and which makes the car light in the rear so it might just be physics

kropscamaro16 · 07-24-2019, 10:52 AM

more aero!!

rickybobby · 07-24-2019, 01:28 PM

Not sure if this helps but my zl1 1le is very stable braking into T2. My M3 is unstable as you are describing though.
I’m not sure specifically what the zl1 has over our ss that is making it more stable though. It’s likely a combination of the aero and suspension though.

TRZ06 · 07-24-2019, 04:58 PM

The rear cradle bushings are your issue.

You need to either put the BMR lockout kit OR ZL1 1LE solid rear cradle bushing kit in. This makes the biggest difference to the rear-end staying planted and gets rid of the side to side sway.

JRL1LE · 07-24-2019, 07:43 PM

I've run many laps at Laguna in my stock SS 1LE, (lap time 1.40), some movement under braking for T2 but I think it's just a heavy car going into downhill braking zone at high speed.

Calcanuck · 07-24-2019, 11:00 PM

Quote:

Originally Posted by JRL1LE

I've run many laps at Laguna in my stock SS 1LE, (lap time 1.40), some movement under braking for T2 but I think it's just a heavy car going into downhill braking zone at high speed.

Thanks
Were you at Laguna on Monday? There was a white 1LE running with Checkered Flag, I was running with Trackmasters at the same event.

Calcanuck · 07-24-2019, 11:02 PM

Quote:

Originally Posted by TRZ06

The rear cradle bushings are your issue.

You need to either put the BMR lockout kit OR ZL1 1LE solid rear cradle bushing kit in. This makes the biggest difference to the rear-end staying planted and gets rid of the side to side sway.

Thanks, I had one other recommendation to add the sold rear cradle bushings. What does this do to the overall ride and control over bumps? I am concern about it skipping over rougher surfaces.

Calcanuck · 07-24-2019, 11:06 PM

Quote:

Originally Posted by rickybobby

Not sure if this helps but my zl1 1le is very stable braking into T2. My M3 is unstable as you are describing though.
I’m not sure specifically what the zl1 has over our ss that is making it more stable though. It’s likely a combination of the aero and suspension though.

I am sure the larger wing on the 1LE does help with more down force on the rear. I don’t notice this as much at Sonoma or Thunderhill, I think Laguna has more down hill braking where the aero more stable rear suspension helps to counter the rear getting light.

JRL1LE · 07-25-2019, 12:03 AM

Quote:

Originally Posted by Calcanuck

Thanks
Were you at Laguna on Monday? There was a white 1LE running with Checkered Flag, I was running with Trackmasters at the same event.

No, but I wish I was! My car is silver

TRZ06 · 07-25-2019, 03:24 PM

Quote:

Originally Posted by Calcanuck

Thanks, I had one other recommendation to add the sold rear cradle bushings. What does this do to the overall ride and control over bumps? I am concern about it skipping over rougher surfaces.

It doesn't change any of the vertical motions of your suspension. That is springs and shocks.

What it does do is eliminate the side to side sway from the rubber bushings. I noticed NO / ZERO adverse effects from the change.

seanblurr · 07-25-2019, 08:24 PM

I was there this past Monday, though I wasn't in the Camaro. Back when I had an SS 1LE I don't recall having too much unsettling coming into turn 2, a bit though.

Calcanuck · 07-25-2019, 09:37 PM

Quote:

Originally Posted by TRZ06

It doesn't change any of the vertical motions of your suspension. That is springs and shocks.

What it does do is eliminate the side to side sway from the rubber bushings. I noticed NO / ZERO adverse effects from the change.

Makes sense, thanks!

Calcanuck · 07-25-2019, 09:39 PM

Quote:

Originally Posted by seanblurr

I was there this past Monday, though I wasn't in the Camaro. Back when I had an SS 1LE I don't recall having too much unsettling coming into turn 2, a bit though.

I am sure the upgrades from SS to 1LE are doing the trick. Sounds like its time to update thinks a little or live with it.

07-23-2019, 11:37 PM	#1
Calcanuck Drives: 2017 Hyper Blue 2SS Join Date: Mar 2017 Location: East Bay, California Posts: 173	Question for SS 1LE owners who Track at Laguna I have been to Laguna in my Camaro for 3 different track days now. I noticed that under heavy braking into turn 2 the back end gets light squirrelly. I don’t remember my 911 getting that squirrelly, I guess there are some advantages to have the motor over the rear wheels . I have an SS with the 1LE suspension upgrade, reprogrammed MRC, factory big brake kit, and Zl1 wheel and tires. I have been thinking of adding the 1LE the Rear trailing links and Rear Knuckle to see if it helps settle the car down under heavy braking. What I am wondering is do SS 1LE cars get squirrelly in this braking zone as well? I realize this is a down hill braking zone and which makes the car light in the rear so it might just be physics __________________ Hyper Blue 2SS, 6MT, NPP, 6 piston Brembo, 1LE suspensions upgrade, ZL1 Seats, Wheels & Tires

07-24-2019, 10:52 AM	#2
kropscamaro16 Drives: 2016 1ss camaro Join Date: Feb 2016 Location: 909 Posts: 9,836	more aero!! __________________ 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS

07-24-2019, 04:58 PM	#4
TRZ06 Drives: 22' Porsche PDK GT4 Join Date: Mar 2018 Location: Bay Area Posts: 2,020	The rear cradle bushings are your issue. You need to either put the BMR lockout kit OR ZL1 1LE solid rear cradle bushing kit in. This makes the biggest difference to the rear-end staying planted and gets rid of the side to side sway. __________________ Current: 22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS *1LE* (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06

07-25-2019, 08:24 PM	#11
seanblurr Drives: ZL1 1LE Join Date: Oct 2016 Location: California Posts: 1,297	I was there this past Monday, though I wasn't in the Camaro. Back when I had an SS 1LE I don't recall having too much unsettling coming into turn 2, a bit though. __________________

07-24-2019, 01:28 PM	#3
rickybobby Drives: BMW M3, ZL1 1LE Join Date: Mar 2019 Location: California Posts: 103	Not sure if this helps but my zl1 1le is very stable braking into T2. My M3 is unstable as you are describing though. I’m not sure specifically what the zl1 has over our ss that is making it more stable though. It’s likely a combination of the aero and suspension though.

07-24-2019, 07:43 PM	#5
JRL1LE Drives: 2017 SS 1LE Join Date: Oct 2015 Location: San Ramon, Ca Posts: 550	I've run many laps at Laguna in my stock SS 1LE, (lap time 1.40), some movement under braking for T2 but I think it's just a heavy car going into downhill braking zone at high speed.

User Name		Remember Me?
Password