DIY: Sport Brake Caliper Rebuild

fonZie · 09-28-2011, 08:06 PM

Bingo, i wonder if earplugs would work... :-)

Thanks!

Ron · 04-25-2013, 02:16 PM

Sorry to bump this up but I have a question. Where do you not want to scratch the piston? I assume you don't want anything on lower half (body/walls) of the piston of course. But what about the lip and groove on the upper part. I scratched mine a little on the grove where the rubber seal goes. See pic.

spearfish25 · 06-07-2013, 08:28 PM

Quote:

Originally Posted by Ron

Sorry to bump this up but I have a question. Where do you not want to scratch the piston? I assume you don't want anything on lower half (body/walls) of the piston of course. But what about the lip and groove on the upper part. I scratched mine a little on the grove where the rubber seal goes. See pic.

You're fine. That groove is just for the dust boot and really doesn't matter. Just don't scratch the outer wall of the piston below that groove.

Gspinin · 07-09-2013, 06:53 PM

thanks for the instructions - i will be rebuilding in a few days when I get my calipers back from the powder coater. I left my O-rings in the caliper - you think that will be a problem with the calipers now powder coated?

Mike · 07-09-2013, 07:36 PM

Quote:

Originally Posted by Gspinin

thanks for the instructions - i will be rebuilding in a few days when I get my calipers back from the powder coater. I left my O-rings in the caliper - you think that will be a problem with the calipers now powder coated?

no, they will hold up fine.

mag_black · 12-08-2013, 05:17 PM

Just wanted to add; for those that are worried, it's a simple process w/ the right tools. Thanks OP!

mag_black · 12-21-2013, 02:11 AM

Does anyone know the bolt size for the rear calipers that hold the 2 halves together? I snapped mine, while torquing it.

Mike · 12-21-2013, 08:40 AM

I believe its M12x1.25 Just take one of the others to Lowe's or Home Depot and check for a match in their specialty bolt drawer.

forza370z · 06-01-2014, 10:51 PM

Question, why not to scratch the piston? It will cause the leak? I used vice grip to pull off the pistons. Didn't really check if there is scratches or teeth marks on the pistons. Can these pistons be bought separately if any of these gets screwed up?

spearfish25 · 06-02-2014, 11:41 AM

Scratching them could allow a leak around the O-ring. Deforming them would be even worse. You may be able to find them on courtesyparts.com

forza370z · 06-02-2014, 02:50 PM

Quote:

Originally Posted by spearfish25

Scratching them could allow a leak around the O-ring. Deforming them would be even worse. You may be able to find them on courtesyparts.com

Gotcha. I definitely need some. I found them on Rock Auto for $9 per piston. Not too bad.

forza370z · 06-02-2014, 09:36 PM

Here are the teeth marks from the vice grip when I pull the pistons out. Most of them are on the lips and inner walls. You guys think they are okay?

Also I did find scratches on the rear piston walls and I am going to order new ones. Do you guys think Centric pistons are as good as oem ones?

chops · 03-02-2015, 12:37 PM

before i create a thread in the main brake forum, anyone know the size of our front pistons? racing brake makes some high temp dust boots and piston's with vents that i would love to test on our cars

ericcd91 · 05-16-2015, 04:13 PM

Hi
Do you know if there is difference between pink and red grease?
Thanks

lhinojos · 07-18-2015, 01:06 PM

HELP!!!

So got my calipers powder late by a local shop(will start another thread about them later) and today while re assembling the calipers, I felt a grind when replacing the bolts that hold the caliper halfs together. So I instantly reversed the ratchet to pull the bolt out to see what was going on, and it locked the bolt. Now it won't turn any way I try to turn it. I checked the other calipers(the unassembeld ones) and found that there is dust trapped where the bolt threads into. My question is how do I loosen the bolt that is seized, also is there a way I can clean the threads for the calipers myself?

12-08-2013, 05:17 PM	#21 (permalink)
mag_black A True Z Fanatic Join Date: Mar 2013 Location: Massachusetts Posts: 1,400 Drives: 09 370Z MT6 Rep Power: 666	Just wanted to add; for those that are worried, it's a simple process w/ the right tools. Thanks OP! forza370z likes this. __________________ fujimura ≠ abbeyRoadCompany ≠ fastIntentions ≠ motordyne ≠ avantGarde ≠ ecutek ≠ nismo ≠ stillen ≠ stoptech ≠ gtm ≠ spl ≠ carbonfiberelement ≠ stance™

12-21-2013, 02:11 AM	#22 (permalink)
mag_black A True Z Fanatic Join Date: Mar 2013 Location: Massachusetts Posts: 1,400 Drives: 09 370Z MT6 Rep Power: 666	Does anyone know the bolt size for the rear calipers that hold the 2 halves together? I snapped mine, while torquing it. __________________ fujimura ≠ abbeyRoadCompany ≠ fastIntentions ≠ motordyne ≠ avantGarde ≠ ecutek ≠ nismo ≠ stillen ≠ stoptech ≠ gtm ≠ spl ≠ carbonfiberelement ≠ stance™

12-21-2013, 08:40 AM	#23 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	I believe its M12x1.25 Just take one of the others to Lowe's or Home Depot and check for a match in their specialty bolt drawer. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

06-01-2014, 10:51 PM	#24 (permalink)
forza370z A True Z Fanatic Join Date: Oct 2011 Location: 403 Forbidden Posts: 2,512 Drives: 2009 NISMO 370Z Rep Power: 18	Question, why not to scratch the piston? It will cause the leak? I used vice grip to pull off the pistons. Didn't really check if there is scratches or teeth marks on the pistons. Can these pistons be bought separately if any of these gets screwed up? __________________ 09 PW 370z Nismo \| K&N Drop Ins \| HKS Hi Power \| Berk HFCs \| Work Meister S1 3P \| Project Kics R40 Neo Chrome Lug Nuts \| KW V1 \| SPC rear camber arms/toe bolts \| Southbend Stage 3 daily clutch \| Southband 19Ib Steel Flywheel \| ZSpeed CSC

06-02-2014, 11:41 AM	#25 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Scratching them could allow a leak around the O-ring. Deforming them would be even worse. You may be able to find them on courtesyparts.com __________________ 2013 Cadillac V-Wagon, RIP Z

09-28-2011, 08:06 PM	#16 (permalink)
fonZie Base Member Join Date: Feb 2011 Location: McKinney Posts: 84 Drives: Roadster, White Rep Power: 14	Bingo, i wonder if earplugs would work... :-) Thanks!

07-09-2013, 06:53 PM	#19 (permalink)
Gspinin Enthusiast Member Join Date: Feb 2012 Location: MA Posts: 272 Drives: 2010 370Z Sport M6 Rep Power: 13	thanks for the instructions - i will be rebuilding in a few days when I get my calipers back from the powder coater. I left my O-rings in the caliper - you think that will be a problem with the calipers now powder coated?

06-02-2014, 09:36 PM	#27 (permalink)
forza370z A True Z Fanatic Join Date: Oct 2011 Location: 403 Forbidden Posts: 2,512 Drives: 2009 NISMO 370Z Rep Power: 18	Here are the teeth marks from the vice grip when I pull the pistons out. Most of them are on the lips and inner walls. You guys think they are okay? Also I did find scratches on the rear piston walls and I am going to order new ones. Do you guys think Centric pistons are as good as oem ones? __________________ 09 PW 370z Nismo \| K&N Drop Ins \| HKS Hi Power \| Berk HFCs \| Work Meister S1 3P \| Project Kics R40 Neo Chrome Lug Nuts \| KW V1 \| SPC rear camber arms/toe bolts \| Southbend Stage 3 daily clutch \| Southband 19Ib Steel Flywheel \| ZSpeed CSC

03-02-2015, 12:37 PM	#28 (permalink)
chops A True Z Fanatic Join Date: Oct 2010 Location: NA Posts: 1,732 Drives: NA Rep Power: 21	before i create a thread in the main brake forum, anyone know the size of our front pistons? racing brake makes some high temp dust boots and piston's with vents that i would love to test on our cars

05-16-2015, 04:13 PM	#29 (permalink)
ericcd91 Base Member Join Date: May 2012 Location: france Posts: 1 Drives: 370z 2009 Rep Power: 12	Hi Do you know if there is difference between pink and red grease? Thanks

07-18-2015, 01:06 PM	#30 (permalink)
lhinojos Track Member Join Date: Apr 2012 Location: Riverside, CA Posts: 559 Drives: 12 370z GM M6 Rep Power: 14	HELP!!! So got my calipers powder late by a local shop(will start another thread about them later) and today while re assembling the calipers, I felt a grind when replacing the bolts that hold the caliper halfs together. So I instantly reversed the ratchet to pull the bolt out to see what was going on, and it locked the bolt. Now it won't turn any way I try to turn it. I checked the other calipers(the unassembeld ones) and found that there is dust trapped where the bolt threads into. My question is how do I loosen the bolt that is seized, also is there a way I can clean the threads for the calipers myself?

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