[GunMetalGrey]

Originally Posted by TrackClub

GMG did ya see my post #102?

Rears only take 30% (approx) of the load, so should last much longer, but worth at least checking anyway as part of the annual maint given the pads.

You bet, not sure if I’m going to do the job myself or not, but I have my father to help out and he’s worked on cars a lot more than I have

[GunMetalGrey]

Originally Posted by RUQWIKR

I think the PN is actually 19207043. Buddy (Geoff) pointed it out to me. The pic they have for the other PN is for the vented ones, too. I will try to go correct my post. Sorry about that. Should not be an issue with returns at least for Amazon.

Updated: dug through my stash: opened the box to confirm: pic is right side up on my phone, but you can see the vented pistons and pressure seals in the sealed container.

Ordered the right ones from CarID, since Summit Racing is apparently out of stock until December.
Was able to cancel the order with Amazon without problem

[TrackClub]

Originally Posted by GunMetalGrey

You bet, not sure if I’m going to do the job myself or not, but I have my father to help out and he’s worked on cars a lot more than I have

Great stuff! Could be a nice family bonding project

[JT Camaro]

Will be cool to see more data on temperature drops with vented pistons

[slimjim2525]

Silly question. Just ordered titanium shims. Do these replace the plate on the back of the pad, or are they additional to the backing plate?

[SCCAForums]

Originally Posted by slimjim2525

Silly question. Just ordered titanium shims. Do these replace the plate on the back of the pad, or are they additional to the backing plate?

Additional. You just slip them right in behind your pads.

Best Regards,
Dave

[weemus]

Originally Posted by JT Camaro

Will be cool to see more data on temperature drops with vented pistons

GM did performance testing (which I will try to locate) which claimed a -30C (-86F) temp drop with vented pistons.

[JT Camaro]

Originally Posted by weemus

GM did performance testing (which I will try to locate) which claimed a -30C (-86F) temp drop with vented pistons.

that's impressive!

[TheRealJA105]

Yeah if that is true, it's very impressive and worthwhile.

[TrackClub]

Originally Posted by TheRealJA105

Yeah if that is true, it's very impressive and worthwhile.

Somebody has actually posted an actual test on his and recorded 75F (i think?) So close enough.

[TheRealJA105]

Originally Posted by TrackClub

Somebody has actually posted an actual test on his and recorded 75F (i think?) So close enough.

I haven't seen any of this data, but I'm very interested now. Even 75°F is a huge difference!

[TrackClub]

Originally Posted by TheRealJA105

I haven't seen any of this data, but I'm very interested now. Even 75°F is a huge difference!

Agree. And obviously individual tests will vary based on circumstances involved.

[RUQWIKR]

I had CCB fronts on for a while early last year with and without vented pistons in the ZL1 1LE calipers. Without vented pistons cooked the outer dust seals within a couple of track days. I put stock J57 vented pistons in, and, before I took the CCB fronts off, I ran a few more track days without cooking the dust seals.

I took the CCB fronts off due to my young sons running a lot then, so, I put steel ZL1 rotors back on with stock pads.

[SCCAForums]

I have since installed the TItanium shims, and the SS 1LE (larger) brake deflectors, and had zero brake issues at ButtonWillow a couple weeks back. I was only out for 10 - 12 minutes, so shorter sessions, but was pleased with how everything worked.

The SS 1LE brake deflectors will scrape if running 18" wheels, and even if 19" wheels, probably not street friendly, mainly for track.

Best regards,
Dave