[Pcormier66]

Where are you guys getting your TI shims for the ZL1 front caliper?

[SCCAForums]

Originally Posted by Pcormier66

Where are you guys getting your TI shims for the ZL1 front caliper?

They were Girodisc brand, and I got them from Strano.

Best Regards,
Dave

[Pcormier66]

Found them. Thanks. Any reason to use shims in the rear as well?

[SCCAForums]

Originally Posted by Pcormier66

Found them. Thanks. Any reason to use shims in the rear as well?

I did both... why not. But the rears took a day of track wear before I could fit both shims in.

They’ll fit nicer on slightly worn pads.

Best Regards,
Dave

[TheRealJA105]

Originally Posted by Pcormier66

Found them. Thanks. Any reason to use shims in the rear as well?

I think the rear brakes get hotter (or at least remain hotter after the cooldown lap) due to less thermal mass and lack of air flow. I've come to this conclusion strictly by the redneck way of touching the wheels when back in the pits and comparing. I need to get an IR thermometer or something to get real data.

Also why i started a thread about rear brake cooling awhile ago. I never did buy the C8 rear cooling ducts to try out though. Of course i got the typical answers of "it's not required" "Chevy designed the system for the track" in that thread too

I still think getting air to the rear brakes would be highly beneficial, but i hate the way our rear rotors are designed with the parking brake drum on the inside and the only internal venting comes from the outside. This would eliminate the cooling air flowing through the rotor vanes.

[RUQWIKR]

Originally Posted by TheRealJA105

I think the rear brakes get hotter (or at least remain hotter after the cooldown lap) due to less thermal mass and lack of air flow. I've come to this conclusion strictly by the redneck way of touching the wheels when back in the pits and comparing. I need to get an IR thermometer or something to get real data.

Also why i started a thread about rear brake cooling awhile ago. I never did buy the C8 rear cooling ducts to try out though. Of course i got the typical answers of "it's not required" "Chevy designed the system for the track" in that thread too

I still think getting air to the rear brakes would be highly beneficial, but i hate the way our rear rotors are designed with the parking brake drum on the inside and the only internal venting comes from the outside. This would eliminate the cooling air flowing through the rotor vanes.

Rears don’t get near as hot unless someone is leaning on PTM too much. A good reference is that the CCB calipers in rear of GM cars don’t use vented pistons but have same pad compound as the front.

[Timbo-1LE]

Ken at KBS

[TheRealJA105]

Originally Posted by RUQWIKR

Rears don’t get near as hot unless someone is leaning on PTM too much. A good reference is that the CCB calipers in rear of GM cars don’t use vented pistons but have same pad compound as the front.

I don't have PTM nor use any nannies, without airflow there is nowhere to dissipate the heat. During actual braking they might not get as hot because they aren't doing as much work, but they have less mass so it might be closer than you think. They definitely don't cool off as quick as the fronts.

[RUQWIKR]

Originally Posted by TheRealJA105

I don't have PTM nor use any nannies, without airflow there is nowhere to dissipate the heat. During actual braking they might not get as hot because they aren't doing as much work, but they have less mass so it might be closer than you think. They definitely don't cool off as quick as the fronts.

Comment wasn’t aimed at you. Airflow even worse with 18” wheels too.

[h018871]

Something else to add:
The banjo washers are single use, GM # 21012386
Pretty cheap, less than a buck a piece. You don't want a leak.

& another something else: banjo bolt torque 30 lb-ft

[olblue75]

Originally Posted by TheRealJA105

I think the rear brakes get hotter (or at least remain hotter after the cooldown lap) due to less thermal mass and lack of air flow. I've come to this conclusion strictly by the redneck way of touching the wheels when back in the pits and comparing. I need to get an IR thermometer or something to get real data.

Also why i started a thread about rear brake cooling awhile ago. I never did buy the C8 rear cooling ducts to try out though. Of course i got the typical answers of "it's not required" "Chevy designed the system for the track" in that thread too

I still think getting air to the rear brakes would be highly beneficial, but i hate the way our rear rotors are designed with the parking brake drum on the inside and the only internal venting comes from the outside. This would eliminate the cooling air flowing through the rotor vanes.

Do you have PNs for the ducts?? Looking for a option for the rear of my Gen5.

[h018871]

blue, JA's thread here:
https://www.camaro6.com/forums/showthread.php?t=574985

A Corvette group discussion here:
https://www.midenginecorvetteforum.c...-not-installed

This is the parts list I was able to find:
10) Deflector, rear brake cooling duct: RH 84721515, LH 84704301
11) Retainer, rear brake cooling air scoop: 11561871, need 12
12) Bolt, rear brake rotor cooling: 11589241, need 4
13) Duct, rear brake rotor cooling: RH 84781212, LH 84781211
14) Bolt, rear brake caliper cooling duct deflector: 11609465, need 12
15) Deflector, rear brake rotor cooling duct: RH 84721514, LH 84704300
16) Bolt, rear brake cooling duct deflector: 93360989, need 6

I haven't tried it but it would appear as though you have to buy the full kit (84713426??) for the C8 as JA couldn't find ducts #13.

Additionally, not sure if there would be much benefit as pointed out earlier: the parking brake on the Camaro blocks airflow through the rotor. The C8 has a separate caliper for the parking brake so the center of the rotor is open to airflow.

[TheRealJA105]

Originally Posted by h018871

blue, JA's thread here:
https://www.camaro6.com/forums/showthread.php?t=574985

A Corvette group discussion here:
https://www.midenginecorvetteforum.c...-not-installed

This is the parts list I was able to find:
10) Deflector, rear brake cooling duct: RH 84721515, LH 84704301
11) Retainer, rear brake cooling air scoop: 11561871, need 12
12) Bolt, rear brake rotor cooling: 11589241, need 4
13) Duct, rear brake rotor cooling: RH 84781212, LH 84781211
14) Bolt, rear brake caliper cooling duct deflector: 11609465, need 12
15) Deflector, rear brake rotor cooling duct: RH 84721514, LH 84704300
16) Bolt, rear brake cooling duct deflector: 93360989, need 6

I haven't tried it but it would appear as though you have to buy the full kit (84713426??) for the C8 as JA couldn't find ducts #13.

Additionally, not sure if there would be much benefit as pointed out earlier: the parking brake on the Camaro blocks airflow through the rotor. The C8 has a separate caliper for the parking brake so the center of the rotor is open to airflow.

I still think there is benefit to be had, but not as much as if we had a properly vented rear rotor.

[h018871]

agreed, something is better than nothing. Not sure how how much that something is though.