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Old Feb 18, 2022 | 05:57 PM
  #101  
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Coilovers are 100% dialed in and the car absolutely flew on the new surface this past weekend. Unfortunately a magnetic ride sensor failed and sent the car into limp mode halfway through the real push lap but it was enough for a 2:15.793 rolling lap per AIM. Lap 1 was a 2:18.623 which is still nearly 2 seconds quicker than our previous best of 2:20.386.


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Old Feb 20, 2022 | 01:01 AM
  #102  
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What tires are you guys on?
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Old Feb 20, 2022 | 02:06 PM
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Originally Posted by Dane@LGmotorsports
Coilovers are 100% dialed in and the car absolutely flew on the new surface this past weekend. Unfortunately a magnetic ride sensor failed and sent the car into limp mode halfway through the real push lap but it was enough for a 2:15.793 rolling lap per AIM. Lap 1 was a 2:18.623 which is still nearly 2 seconds quicker than our previous best of 2:20.386.

https://youtu.be/2u1-Hu-GMoo
Sounds about right... people doubted the fact that coilovers on this car could produce 2-3 second improvements. We saw similar improvements with the properly dialed MCS coilovers. The stock suspension on the C8 leaves ALOT on the table with how overly soft and poorly dampened it is.

Congrats on the lap time.
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Old Feb 20, 2022 | 10:39 PM
  #104  
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Originally Posted by GTUnit
What tires are you guys on?
I believe 295/345 Hoosiers, though they can correct me if I’m wrong.
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Old Feb 21, 2022 | 02:26 PM
  #105  
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Originally Posted by J5isalive
Sounds about right... people doubted the fact that coilovers on this car could produce 2-3 second improvements. We saw similar improvements with the properly dialed MCS coilovers. The stock suspension on the C8 leaves ALOT on the table with how overly soft and poorly dampened it is.

Congrats on the lap time.
Thanks! I finally made a spring change in the rear rather than messing with rebound and it made a world of a difference.

Originally Posted by PRE-Z06
I believe 295/345 Hoosiers, though they can correct me if I’m wrong.
That is correct, A7 compound.
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Old Feb 22, 2022 | 04:32 PM
  #106  
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Dana,
when will the Bilstein coilover kit for the C8 be available?
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Old Feb 22, 2022 | 06:15 PM
  #107  
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Originally Posted by seanirby
Dana,
when will the Bilstein coilover kit for the C8 be available?
It'll be ~6 weeks before I get custom gas caps to make them bolt on but if the front lower control arm is modified to accept a heim then I can build/ship in 2-3 weeks.
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Old Feb 22, 2022 | 07:07 PM
  #108  
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What sway bars do you recommend with the coil overs?
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Old Feb 23, 2022 | 12:03 PM
  #109  
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Originally Posted by seanirby
What sway bars do you recommend with the coil overs?
Ours when available but in the meantime I'd say the AFE offering is better than stock.
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Old Mar 7, 2022 | 12:58 PM
  #110  
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Originally Posted by J5isalive
Sounds about right... people doubted the fact that coilovers on this car could produce 2-3 second improvements. We saw similar improvements with the properly dialed MCS coilovers. The stock suspension on the C8 leaves ALOT on the table with how overly soft and poorly dampened it is.

Congrats on the lap time.
It is still a Production car and penny pinchers are still involved lol. Doesn't surprise me better shocks helped.
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Old Mar 7, 2022 | 01:06 PM
  #111  
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Originally Posted by smitty2919
It is still a Production car and penny pinchers are still involved lol. Doesn't surprise me better shocks helped.
And that is the correct response... the number of corvette owners who challenged me on this about the shock and spring package being a huge compromise on the stock car was amazing... I stopped responding, all these boomers thinking Tadge wouldnt put out a car who's suspension was a bit of a compromise. Oh well.

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Old Mar 7, 2022 | 02:35 PM
  #112  
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Originally Posted by J5isalive
And that is the correct response... the number of corvette owners who challenged me on this about the shock and spring package being a huge compromise on the stock car was amazing... I stopped responding, all these boomers thinking Tadge wouldnt put out a car who's suspension was a bit of a compromise. Oh well.
Yea, that is silly. Anybody who tracks a lot would understand that your truly ideal setup on track would be hell to daily drive. And that goes well beyond just springs and shocks.
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Old Mar 7, 2022 | 03:46 PM
  #113  
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Originally Posted by Ksteckba
Yea, that is silly. Anybody who tracks a lot would understand that your truly ideal setup on track would be hell to daily drive. And that goes well beyond just springs and shocks.
Not necessarily the case. This is where adjustable shocks come into play. Spring rate and shock settings control your comfort level. Spring rate will make things "firm", then you need a shock that can control said spring rate. But having too much compression/rebound in a shock setting makes things ride harsh and not very comfortable. Big bars can add roll stiffness without reducing any type of comfort on the street.

Higher end shocks like MCS/Penske/JRi/Ohlins/KW do this better than others, but on the opposite side of he spectrum the Viking Performance twin tube triple adjustable coilovers I have on my C5Z can me made to fee like a Cadillac on the street to a track car on rails in just a matter of clicks...and the Vikings are a fraction of high end setups.
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Old Mar 7, 2022 | 03:46 PM
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Originally Posted by Ksteckba
Yea, that is silly. Anybody who tracks a lot would understand that your truly ideal setup on track would be hell to daily drive. And that goes well beyond just springs and shocks.
Not necessarily the case. This is where adjustable shocks come into play. Spring rate and shock settings control your comfort level. Spring rate will make things "firm", then you need a shock that can control said spring rate. But having too much compression/rebound in a shock setting makes things ride harsh and not very comfortable. Big bars can add roll stiffness without reducing any type of comfort on the street.

Higher end shocks like MCS/Penske/JRi/Ohlins/KW do this better than others, but on the opposite side of he spectrum the Viking Performance twin tube triple adjustable coilovers I have on my C5Z can me made to fee like a Cadillac on the street to a track car on rails in just a matter of clicks...and the Vikings are a fraction of high end setups.
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Old Mar 7, 2022 | 03:50 PM
  #115  
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Originally Posted by J5isalive
And that is the correct response... the number of corvette owners who challenged me on this about the shock and spring package being a huge compromise on the stock car was amazing... I stopped responding, all these boomers thinking Tadge wouldnt put out a car who's suspension was a bit of a compromise. Oh well.
Aww, well it's a Corvette...GM would never compromise on their flagship vehicle...

Wait till you start seeing the Z06 variant spring setups. They are throwing down a LITTLE more money/effort into those
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Old Mar 7, 2022 | 03:52 PM
  #116  
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Originally Posted by smitty2919
Not necessarily the case. This is where adjustable shocks come into play. Spring rate and shock settings control your comfort level. Spring rate will make things "firm", then you need a shock that can control said spring rate. But having too much compression/rebound in a shock setting makes things ride harsh and not very comfortable. Big bars can add roll stiffness without reducing any type of comfort on the street.

Higher end shocks like MCS/Penske/JRi/Ohlins/KW do this better than others, but on the opposite side of he spectrum the Viking Performance twin tube triple adjustable coilovers I have on my C5Z can me made to fee like a Cadillac on the street to a track car on rails in just a matter of clicks...and the Vikings are a fraction of high end setups.
LG's spring rates and my spring rates are fairly similar... I am sure they'd agree that the ride comfort isnt much sacrificed. The main thing i find on my 3way MCS is their versatility, with the compression dialed back a bit the ride is quite refined and a joy on the street. Unfortunately i've gone pretty far off the deepend with my C8 and the car does not see very much street time; the time it does see I enjoy it alot! Its better than stock in all respects.
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Old Mar 7, 2022 | 03:54 PM
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Originally Posted by smitty2919
Aww, well it's a Corvette...GM would never compromise on their flagship vehicle...

Wait till you start seeing the Z06 variant spring setups. They are throwing down a LITTLE more money/effort into those
The spring rate on the new z06 based on their percentage increase over the z51 is still a joke as compared to what the car needs. but i digress. lol
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Old Mar 7, 2022 | 04:04 PM
  #118  
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Originally Posted by J5isalive
LG's spring rates and my spring rates are fairly similar... I am sure they'd agree that the ride comfort isnt much sacrificed. The main thing i find on my 3way MCS is their versatility, with the compression dialed back a bit the ride is quite refined and a joy on the street. Unfortunately i've gone pretty far off the deepend with my C8 and the car does not see very much street time; the time it does see I enjoy it alot! Its better than stock in all respects.
I would agree with you. I feel the same way just on a much lower end setup than you. People get scared of increasing spring rate and sacrificing ride quality.

Originally Posted by J5isalive
The spring rate on the new z06 based on their percentage increase over the z51 is still a joke as compared to what the car needs. but i digress. lol
I'm curious, what spring rate numbers are you hearing??
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Old Mar 7, 2022 | 04:08 PM
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Originally Posted by smitty2919

I'm curious, what spring rate numbers are you hearing??
35-43% stiffer. the base z06 is +35% z07 is +43%
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Old Mar 7, 2022 | 04:22 PM
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Originally Posted by J5isalive
35-43% stiffer. the base z06 is +35% z07 is +43%
I think at most FE4 Z51 rates are FR 39.5N/mm and RR 46 N/mm. So you're thinking rates upwards of FR 53-57 and RR 62-65?

I has a feeling they are more than that for the upcoming top variant cars Z06 and up. They did bench mark against a GT3RS.
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