Official Fix for Shattered Brake Pistons

135nRXP · 08-22-2011, 03:24 PM

This may be a dumb question, but why do we need to order four of each of those pistons? There are only 12 pistons total in those calipers right?

TimMc · 08-22-2011, 10:03 PM

Quote:

Originally Posted by 135nRXP

This may be a dumb question, but why do we need to order four of each of those pistons? There are only 12 pistons total in those calipers right?

4 x 28mm pistons + 4 x 32mm pistons + 4 x 36mm pistons = 12 pistons all up.

Focusedintntions · 08-23-2011, 08:17 AM

This should be stickied....

135nRXP · 08-23-2011, 12:10 PM

Quote:

Originally Posted by TimMc

4 x 28mm pistons + 4 x 32mm pistons + 4 x 36mm pistons = 12 pistons all up.

Thanks. And wow I just realized that I was hit by the dumb bus on that one lol.

redrum36 · 08-27-2011, 10:15 PM

this still will only fix the piston cracking issue. the brakes will still over heat and have problems. when my pedal goes to the floor on the track, i feel like i am asking for a disaster to hsappen. i don't think cooling is going to help either,even if there was an option available. i think "real" BBK is only cure.

larryn · 08-28-2011, 08:22 AM

Quote:

Originally Posted by redrum36

this still will only fix the piston cracking issue. the brakes will still over heat and have problems. when my pedal goes to the floor on the track, i feel like i am asking for a disaster to hsappen. i don't think cooling is going to help either,even if there was an option available. i think "real" BBK is only cure.

Well, then you feel differently than two club racers in 135is that I know of with this fix. I would suggest Motul and a proper bleeding. If your pedal is going to the floor, you've got issues somewhere. The only time I had pedal to the floor was at Watkins Glen, when my pistons were failing... and I do quite a few track days.

adrean8j · 08-28-2011, 10:30 AM

Quote:

Originally Posted by larryn

Well, then you feel differently than two club racers in 135is that I know of with this fix. I would suggest Motul and a proper bleeding. If your pedal is going to the floor, you've got issues somewhere. The only time I had pedal to the floor was at Watkins Glen, when my pistons were failing... and I do quite a few track days.

I wonder why he thinks more cooling wouldn't help???

larryn · 08-30-2011, 08:09 PM

Quote:

Originally Posted by adrean8j

I wonder why he thinks more cooling wouldn't help???

Brake fade is caused by heat when your fluid boils.. I have no idea why he would think that cooling wouldn't help.

Brake fade feeling can happen if you have air in your lines, which is why I suggested bleeding, because these brakes take lots beating before they fade, with proper fluids in them.

pixelblue · 08-30-2011, 08:29 PM

Quote:

Originally Posted by larryn

these brakes take lots beating before they fade, with proper fluids in them.

Exactly!

chachacha28 · 11-30-2011, 02:46 PM

it looks like TH motorsports has seals for $21.50, so it should only be $255 + shipping. save yourself $45, thats like free brake fluid!

http://thmotorsports.com/i-336773.as...gSeanNOFITMENT
http://thmotorsports.com/i-336777.as...gSeanNOFITMENT
http://thmotorsports.com/i-336781.as...gSeanNOFITMENT

Chad44 · 02-26-2012, 07:50 PM

BTW- I want to buy a set of these with shattered pistons, to rebuild... If you have a set- PM me!

Ginger_Extract · 05-09-2014, 12:47 AM

Quote:

Originally Posted by ezeedee

it looks like TH motorsports has seals for $21.50, so it should only be $255 + shipping. save yourself $45, thats like free brake fluid!

http://thmotorsports.com/i-336773.as...gSeanNOFITMENT
http://thmotorsports.com/i-336777.as...gSeanNOFITMENT
http://thmotorsports.com/i-336781.as...gSeanNOFITMENT

Bumping this up. 9 of my 12 piston seals/dust boots are FUCKED. Pistons looks okay, but they're on borrowed time. What all do I need for a rebuild?

jafo1701 · 05-29-2014, 02:35 AM

Quote:

Originally Posted by Ginger_Extract

Bumping this up. 9 of my 12 piston seals/dust boots are FUCKED. Pistons looks okay, but they're on borrowed time. What all do I need for a rebuild?

I just did the Racing Brake Kit earlier this year. Just need an air compressor to get the old pistons out and a pick tool to get the old seals and dust boots out. I went with the high temp dust seals. Have to be careful not to get any brake fluid on the high temp dust seals though. I covered em up with masking tape when I put my calipers back on. I've yet to track with them yet. My first track day this year is this coming Monday.

John_01 · 04-06-2015, 02:23 AM

Has anyone tried this upgrade? Apparently RB are have production delays with their pistons/seals, so I think the Stoptech pistons are the only option available at the moment.

ShocknAwe · 04-06-2015, 07:36 AM

You really can't go wrong with StopTech.

dcaron9999 · 04-13-2015, 08:58 AM

After my brake service job yesterday (Motul RBF600 fluid replacement, inner-to-outer PFC 08 pad swap, clean up of all contact points, and thin coat of copper grease), I noticed that one of my driver side pistons had begun to chip. Dust boots are disintegrated as well, but I dont care as much about that. I used the Dremel to carefully smooth out the chip with very good results, and will start the lapping season like this.

Will be ordering pistons soon. Will email RB to see if that have their "leaking" piston seal issue sorted out for owners that see freezing weather. If not, will order seals from Zeckhausen, "high temp" boots and "vented" pistons from RB.

Any one know of a good DIY to the 135i caliper rebuild?

dcaron9999 · 04-13-2015, 07:57 PM

While I was on the RB site today, contemplating ordering their caliper rebuild kit, to my surprise the kits are no longer available or at least, they have been "temporarily" removed from their web site.

Would have been nice to order their stainless steel vented pistons...

08-22-2011, 03:24 PM	#45
135nRXP Boooooost! 5 Rep 73 Posts Drives: 2009 135i Coupe Join Date: Jun 2011 Location: FL iTrader: (1)	This may be a dumb question, but why do we need to order four of each of those pistons? There are only 12 pistons total in those calipers right? __________________ 09 135i, A6, Monaco/Coral Red, M-Sport pkg, Premium pkg, Hi-Fi sound,
	Appreciate 0 Quote

08-23-2011, 08:17 AM	#47
Focusedintntions Colonel 105 Rep 2,696 Posts Drives: 2011 135i M-Sport :D Join Date: Nov 2010 Location: NoVA iTrader: (1)	This should be stickied.... __________________ Faster, faster, faster, until the thrill of speed overcomes the fear of death… – Hunter Thompson
	Appreciate 0 Quote

08-27-2011, 10:15 PM	#49
redrum36 135i-DIOT 11 Rep 124 Posts Drives: 2011 135i Join Date: Apr 2011 Location: chicago iTrader: (1)	this still will only fix the piston cracking issue. the brakes will still over heat and have problems. when my pedal goes to the floor on the track, i feel like i am asking for a disaster to hsappen. i don't think cooling is going to help either,even if there was an option available. i think "real" BBK is only cure. __________________ 2011 135i -muffler delete, AFE intake, springs, sway, vorslag, Stoptech STR60 david@shark3.com "Faster, Faster, until the thrill of speed overcomes the fear of death."Hunter S. Thompson FS:VISHNU Procede
	Appreciate 0 Quote

11-30-2011, 02:46 PM	#54
chachacha28 NCOIC of Kickin It 77 Rep 946 Posts Drives: 08 135i "Simona" Join Date: Feb 2011 Location: Great Falls MT iTrader: (1)	it looks like TH motorsports has seals for $21.50, so it should only be $255 + shipping. save yourself $45, thats like free brake fluid! http://thmotorsports.com/i-336773.as...gSeanNOFITMENT http://thmotorsports.com/i-336777.as...gSeanNOFITMENT http://thmotorsports.com/i-336781.as...gSeanNOFITMENT Last edited by chachacha28; 11-30-2011 at 02:51 PM.. Reason: im a dumbass
	Appreciate 0 Quote

02-26-2012, 07:50 PM	#55
Chad44 New Member 0 Rep 9 Posts Drives: 03' 330i zhp, Imola Red Join Date: Feb 2012 Location: Worcester, Ma. iTrader: (0)	BTW- I want to buy a set of these with shattered pistons, to rebuild... If you have a set- PM me!
	Appreciate 0 Quote

04-06-2015, 02:23 AM	#58
John_01 Colonel 232 Rep 2,643 Posts Drives: E90 325i, E82 135i Join Date: Mar 2009 Location: Sydney, Australia iTrader: (0)	Has anyone tried this upgrade? Apparently RB are have production delays with their pistons/seals, so I think the Stoptech pistons are the only option available at the moment. Last edited by John_01; 04-06-2015 at 02:52 AM..
	Appreciate 1 Quote

04-06-2015, 07:36 AM	#59
ShocknAwe 1Addict 3233 Rep 7,892 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	You really can't go wrong with StopTech. __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
	Appreciate 0 Quote

04-13-2015, 08:58 AM	#60
dcaron9999 Major 157 Rep 1,409 Posts Drives: 2011 135i M package Join Date: Jan 2010 Location: Mirabel, Quebec iTrader: (0)	After my brake service job yesterday (Motul RBF600 fluid replacement, inner-to-outer PFC 08 pad swap, clean up of all contact points, and thin coat of copper grease), I noticed that one of my driver side pistons had begun to chip. Dust boots are disintegrated as well, but I dont care as much about that. I used the Dremel to carefully smooth out the chip with very good results, and will start the lapping season like this. Will be ordering pistons soon. Will email RB to see if that have their "leaking" piston seal issue sorted out for owners that see freezing weather. If not, will order seals from Zeckhausen, "high temp" boots and "vented" pistons from RB. Any one know of a good DIY to the 135i caliper rebuild? __________________ 2011 X3 35i with M pack + 2011 135i w/6SPMT \| 255 square tire setup \| Quaife 3.46 LSD \| Diff lock down bracket \| Bilstein B8+Swift SpecR springs+H&R FSB \| CDV delete \| BMS Oil Tstat bypass \| ER FMIC & CP \| N54Tuning DP \| GC Street Camber Plates \| M3 FCA +guide rods+RSFB's+Tranny mounts \| Manzo toe arms \| Cobb Stg2 agressive tune \| Hawk DTC70 brake pads \| RB SS brake pistons \| Goodridge SS brake lines \| Custom brake cooling ducts
	Appreciate 0 Quote

04-13-2015, 07:57 PM	#61
dcaron9999 Major 157 Rep 1,409 Posts Drives: 2011 135i M package Join Date: Jan 2010 Location: Mirabel, Quebec iTrader: (0)	While I was on the RB site today, contemplating ordering their caliper rebuild kit, to my surprise the kits are no longer available or at least, they have been "temporarily" removed from their web site. Would have been nice to order their stainless steel vented pistons... __________________ 2011 X3 35i with M pack + 2011 135i w/6SPMT \| 255 square tire setup \| Quaife 3.46 LSD \| Diff lock down bracket \| Bilstein B8+Swift SpecR springs+H&R FSB \| CDV delete \| BMS Oil Tstat bypass \| ER FMIC & CP \| N54Tuning DP \| GC Street Camber Plates \| M3 FCA +guide rods+RSFB's+Tranny mounts \| Manzo toe arms \| Cobb Stg2 agressive tune \| Hawk DTC70 brake pads \| RB SS brake pistons \| Goodridge SS brake lines \| Custom brake cooling ducts
	Appreciate 0 Quote