[kropscamaro16]

i tried 2.0 front 1.5 rear then tried 2.0 all the way around now with all the spl parts im able to get -3 front -2.2 rear with no camber plates


once i get the camber plates/coilovers on ill probably do -3.5 f -2.5 r to start lol wish me luck


i wanted to do the rear cradle bushings but parts is like $500 and labor is about the same or more lol which did you do gm or bmr or?

[khcoaching]

Originally Posted by kropscamaro16

i tried 2.0 front 1.5 rear then tried 2.0 all the way around now with all the spl parts im able to get -3 front -2.2 rear with no camber plates


once i get the camber plates/coilovers on ill probably do -3.5 f -2.5 r to start lol wish me luck


i wanted to do the rear cradle bushings but parts is like $500 and labor is about the same or more lol which did you do gm or bmr or?

GM for the bushings. I also just purchased some SPL arms for next time......

[khcoaching]

#3 Ridge Motorsports Park – WITH the Chicane 155.95
WITHOUT the Chicane 148.91

Since the car needed a full service and the axle retainer clip recall done, I took it to the dealer and had them perform all the work. (All fluids, axle clip recall, brake fluid flush with DOT4, ZLE rear subframe bushings since they were dropping the rear cradle anyway and another full alignment) I had installed the GMPP CAI kit and was told the flash was no go for 2021. The dealer was able to get the GMPP CAI flash done, even though I was told it couldn’t happen. Side bar – The local dealer has a mechanic that is their “track” mechanic and is well versed in Corvettes and Camaros. He was able to get the alignment where it needed to be, per the GM track specs. Car is still on the stock wheels, Goodyear tires and brake pads.

Changes from #2 – GMPP CAI with calibration – ZLE rear subframe bushings, DOT4 fluid, different alignment (-2.5F -1.5 R .002 Toe)

On track –

So…..there ended up with a lot happening this session. With all the changes listed above, the tests included:

- Ridge with the Chicane
- Ridge without the Chicane
- Ridge Chicane all electronics OFF
- Ridge Chicane in ESC in RACE mode and TC off

Video of the laps without the Chicane -

https://youtu.be/voyRhiJPH3k

Observations – Considering how little was actually done, the changes were very noticeable. The alignment was felt, everywhere….turn in, mid corner and on exits. I know a lot of people complain about understeer on these cars, I basically had none, unless I pushed too hard and made it happen. (Remember, I’m still on the OEM F1 S3 tires) The car was unflappable on entries and even more so with the ESC on Race. I’m chalking this up to the subframe bushings. The data charts tell the tale with the much higher entry speeds.

Powerwise with the GMPP CAI and mapping, for sure smoother running and throttle response, but no real performance difference. I did run it to the revlimiter coming out of 11 (waste of time for an upshift) and also up the front straight where I should have gone to 5th without the Chicane.

I also had zero issues with the brakes. No fade, pretty good power and modulation – still on stock pads, but good fluid. I did push the entries a bit more and the ABS activation is starting to be a problem. I’m hoping stickier tires solves this and I’ll also go to a race type of a pad.

Here is the lap time difference from Test#2



And....I was able to sneak in a electronics test. My morning runs were all done with TC and ESC OFF......I did a back to back with the car in RACE mode and.....it was faster. The car have me so much more confidence on the entry, that I could really push it until the ABS was consistently holding me back. I also set my outright fastest lap with NO Chicane with it in Race mode as well. Pretty surprised and it flat out works.

Here is the back too back test -

[eimarshall]

WOW!! Awesome time! You are carrying some great speed!

I've been trying some new lines with the new pavement, and seeing your line certain lends some creedence to what I've felt. The double apex on 6 and 8 is great confirmation and you're staying much further inside on 11 and at the start of 15 than I've tried. Also you're clearly braking later than I am. lol. Can't wait to try some of those lines tomorrow!!

[kropscamaro16]

Originally Posted by khcoaching

GM for the bushings. I also just purchased some SPL arms for next time......

nice its about the only thing i dont have on my suspenion so far lol mcs 1 way coilovers and vorshlag camber plates on the way

[khcoaching]

Originally Posted by eimarshall

WOW!! Awesome time! You are carrying some great speed!

I've been trying some new lines with the new pavement, and seeing your line certain lends some creedence to what I've felt. The double apex on 6 and 8 is great confirmation and you're staying much further inside on 11 and at the start of 15 than I've tried. Also you're clearly braking later than I am. lol. Can't wait to try some of those lines tomorrow!!

I’ll have the car there tomorrow, but will be working with a client. Hopefully we can do lap!

[khcoaching]

A couple of pics from Thursday.....

[khcoaching]

Update on consumables......at this point, the car has a total of what I would call 2.5 days on it, pretty much all hard.

Tires - The tires could probably go another day, but it wouldn't be a record pace. Front wear is pretty darn excellent, maybe another .5 of camber, but really close. The rear for sure needs more camber, but it will have to wait for the arms to get installed.

Front



Rear



Brakes - Rotors look amazing, you can even make out some of the cross hatch on the edge on the right front. I think the stock pads are pretty easy on the rotors and I am impressed with how well they work....still no fade and plenty of stopping power. Pad wear is more than I would have thought, but pretty good. Probably another day left in them.



Ken

[kropscamaro16]

these supercar 3s are tanks i got around 5 track days on my first set and still have life left in em and pads my oem set with my bbk lasted almost a year then upgraded to hawk dtc60 but they are hard on rotors so far!



im on -3 front -2.2 and it seems pretty good now but once i get the coils/plates ill add more in front

[khcoaching]

Great info! How are you getting more camber out of the rear?

The SC3s are amazing, but for sure fell off PB pace on the 2nd day even though the wear is good. I think I could only get another day max out of my pads.....

Ken

[kropscamaro16]

i have all of the spl parts in the rear lol so its easy but from factory you can get -2 no problem and yea oem tires/pads arent bad on these cars

what are you going to upgrade to for tires/pads?

[khcoaching]

Originally Posted by kropscamaro16

i have all of the spl parts in the rear lol so its easy but from factory you can get -2 no problem and yea oem tires/pads arent bad on these cars

what are you going to upgrade to for tires/pads?

I have a square 305/30/19 with SC3Rs ready to go for next time. Probably the Ferodo 3.12s......I've had great luck with the 2500s and also the 1.11s.

The tech who did the alignment could only get 1.8 and 1.5 out of the year and he has quite a lot of experience with these cars. I'll the the arms on after I try the square setup as it isn't horrible now.

Ken

[kropscamaro16]

oh nice and yea im still trying to figure out if i want to do a square/staggered setup not sure yell well figure it out !

[eimarshall]

It was awesome meeting you at the track last Saturday! Thanks for the pointers and ride along!