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Only the rear AP Racing rotors required a spacer on my .2 GTS, and I can see why. The pads and caliper would have been touching the rear hat on the new rotor. Wouldnt have fit.
On the fronts they were good as is. I was assuming both needed spacers or possibly just the rear. However after getting it and reviewing it, it all makes sense. Just the rear needed spacers and only rear needed longer studs.
Yup, I get no spacer for the front since you are already running 350mm discs there. @JRitt@essex can you confirm the size spacer required for the rear? @LWG has a smaller gap than I do and we have exactly the same calipers, except his caliper color in red is a bit faster than mine in slow black.
I'll have to dig into the stud kit - I was sold the same length all the way around and you were not. Given we have the exact same discs I would think we should also have the same studs length unless the caliper up front makes it different for you (bigger). I will have to dig into that.
I’ll take a look when we are back in the office on Monday.
Red is definitely always faster! 😂
__________________
'09 Carrera 2S, '08 Boxster LE (orange), '91 Acura NSX, Tesla Model 3 Performance, Fiesta ST
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs Ferodo Racing Brake Pads Spiegler Stainless Steel Brake Lines
704-824-6030 jeff.ritter@essexparts.com
I have removed the rotor shields. thanks for the recommendation and help Jeff. Any concerns with extra heat now getting to the sensors or bush
Nice! That should help even out and lengthen your pad and disc wear.
Some people cover their ball joints and sensors with a heat barrier product. On my Corvette I had little shields made from a heat barrier product we offer called Teknofibra: https://www.essexparts.com/teknofibr...hermal-barrier
You can literally hold your hand on one side of this stuff, and a blow torch on the other, and not feel it. That may be a bit overkill for your needs though. As rugu6869 notes, your AP Racing discs are going to run considerably cooler than the OEM discs, and will put a lot less heat into the neighboring components.
Quick question, I had this kit installed today and we didn't need the calipers spacers on the front (plenty of clearance without, and with we had wayyy too much clearance between hat and pad with).
991.1, so my oem dics are 340mm.
Is this okay/normal?
I ended up running GT3 pads, so maybe this effected things in some way?
Pic for reference.
Last edited by mic_crispy; 03-29-2021 at 04:48 PM.
Quick question, I installed this kit today and we didn't need the calipers spacers on the front (plenty of clearance without, and with we had wayyy too much clearance between hat and pad with).
991.1, so my oem dics are 340mm.
Is this okay/normal?
I ended up running GT3 pads, so maybe this effected things in some way?
Pic for reference.
Not related to your question but did you scrub the rotors with a scrub pad and soap prior to install? If not, you may have some real trouble stopping. Just looks like the protective coating is still on in your pick.
Not related to your question but did you scrub the rotors with a scrub pad and soap prior to install? If not, you may have some real trouble stopping. Just looks like the protective coating is still on in your pick.
Looks great, BTW.
I'll ask my mechanic. Wasn't around for the install, but it stops great right now.
Last edited by mic_crispy; 03-28-2021 at 10:24 PM.
Quick question, I installed this kit today and we didn't need the calipers spacers on the front (plenty of clearance without, and with we had wayyy too much clearance between hat and pad with).
991.1, so my oem dics are 340mm.
Is this okay/normal?
I ended up running GT3 pads, so maybe this effected things in some way?
Pic for reference.
What size spacer did they include with your front kit? 12mm? 6mm? Maybe the hat is smaller diameter therefore no spacer needed? Is 991.2 caliper different than 991.1? I know .2 comes with 10mm larger rotor.
Quick question, I installed this kit today and we didn't need the calipers spacers on the front (plenty of clearance without, and with we had wayyy too much clearance between hat and pad with).
991.1, so my oem dics are 340mm.
Is this okay/normal?
I ended up running GT3 pads, so maybe this effected things in some way?
Pic for reference.
First, thanks for the purchase! The pic looks like things are situated properly radially. As long as the discs are centered in the caliper, and the pads are running close to the outer edge of the disc without too much overhang, or without sitting inboard too far, it won't cause any problems. If your caliper is sitting in too far however, the edge of the disc can get into the bottom of the caliper body in the area we call the caliper's disc pathway. Can you please shoot me a pic from the top of the caliper showing how the pad is sitting relative to the outer edge of the disc? Also, what year and trim level is your car?
Wujohn is correct on washing the discs. They are stored in oiled paper to prevent rust. The witness marks from that paper are on the disc in the pic. Your mechanic may have wiped them down after install.
What size spacer did they include with your front kit? 12mm? 6mm? Maybe the hat is smaller diameter therefore no spacer needed? Is 991.2 caliper different than 991.1? I know .2 comes with 10mm larger rotor.
I believe its a 10mm spacer?
991.1 (S/GTS) Has 340mm Front Rotor, 991.2 has 350mm front (S/GTS).
With the 10mm spacer(CORRECTION, 6mm), the pad was hanging over the rotor on the outside.
Last edited by mic_crispy; 03-29-2021 at 11:03 AM.
First, thanks for the purchase! The pic looks like things are situated properly radially. As long as the discs are centered in the caliper, and the pads are running close to the outer edge of the disc without too much overhang, or without sitting inboard too far, it won't cause any problems. If your caliper is sitting in too far however, the edge of the disc can get into the bottom of the caliper body in the area we call the caliper's disc pathway. Can you please shoot me a pic from the top of the caliper showing how the pad is sitting relative to the outer edge of the disc? Also, what year and trim level is your car?
Wujohn is correct on washing the discs. They are stored in oiled paper to prevent rust. The witness marks from that paper are on the disc in the pic. Your mechanic may have wiped them down after install.
Ill try to get this pic asap, but wheels are back on so its hard. It does brake correctly though so i figured it either works or it doesnt? Or maybe its an issue when the brakes expand?
With the spacer, my pad was above the rotor so we figured that was not ideal.
Its a 991.1 Carrera S.
Last edited by mic_crispy; 03-29-2021 at 09:03 AM.
02-19-2021, 06:02 PM
