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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, Oct-28-2018, 06:02:26 AM   #1
bosundave
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Default Things I learned from changing my Brembo 2-piece rotors.

1) my Brembo 355 mm X 32 mm friction rings are incredibly expensive. https://www.turnermotorsport.com/p-1...eft-and-right/
$1119.90 influence mounting hardware

2) Stoptech friction rings will fit perfectly. They are not supposed to be near as good but are less than half price. Mounting hardware is also included.
Amazon.
Centric 31.737.1102.99 Brake Rotor (AERO-ROTOR + HDWR - 355x32 SLOT RIGHT)
$268.45 free shipping. the .99 suffix means that the mounting hardware is also included. They come in a sealed Stoptech labeled box.

I bought and installed the left slotted rotor. On my upcoming next day off, I will install the right side.

3) Unless you have an oxy acetylene torch to put a lot of heat to the Brembo Fasteners count on cutting at least some of them off with a Dremel.
Corrosion was not a problem with the Fasteners. They were actually in great shape. Remember it is steel into bronze so this is not a corrosion issue. Brembo uses high-strength threadlocker. They use a LOT of high strength threadlocker on their fasteners.

When Brembo says the fasteners cannot be reused, they are not kidding. Half of the fastners came off with my quarter inch impact gun and the other half had to be the cut off using three large fiber cut-off wheels and my Dremel.

I used the propane torch to try to soften the threadlocker. That was ineffectual. Then I used MAPP gas. That was also ineffectual. I did not have access to oxy-acetylene which would have worked. So my only option was to cut them off. PITA!

And yes yes I had been soaking the Fasteners for 2 days with Kroil penetrating fluid. There was zero corrosion... that was not the issue. It was just the copious amount of high strength threadlocker that Brembo uses.

4) The Stoptech friction ring at least appears to be extremely high quality and fit perfectly. But the fasters did not seem to be near as good as the Brembo fasteners. But Stoptech even includes Vibra Tite threadlocker with the bag of fasteners which was a nice touch.

5) Make sure you have the correct small size torque wrench that will accurately apply 70 inch pounds. I had a brand new calibrated one.

6) I learned it having a 36-inch long pry bar is invaluable and I don't know how I went so long without one. The rotors have been on for 8 years and I did not use never sieze on the hub. (Big mistake) Obviously, the rotor hat was frozen to the hub. Using a large hammer on the old rotor is not really an option because it may damage your wheel bearings. And hammers generally don't work anyways.

One nice little pop with a 36-inch pry bar was all it took to separate the rotor hat from the Hub.

7) If I had used never seize and had not left the rotors on for so long, the job would have been much easier. The job took forever because I was meticulous, using a variety of wire wheels on my electric drill and smaller wire wheels on my Dremel to clean the Hub surface and rotor hat.

8)I thought the rotor hat would just clean up and everything will be fine. That was not the case. It was extremely faded from the sun and therefore needed to be wire wheeled, sanded and repainted and also coated with clear... which I did.

9) The job took much more time than anticipated because I went to the extra trouble to get the hub scrupulously clean using a wire wheel and brake clean. And then a very nice coat of non galvanic specialized never-seize since I live in a salt air environment.

10) I had no idea how long it would take to clean the actual caliper body and the pins and the spring steel pad retaining clip. I had two metal heat shields that needed both sides wire wheeled too.
Lots of brake clean and scrubbing with a nylon brush on the actual caliper. Painting the caliper will have to wait until another day, but it's fully operational for now.

11) I also found out I was glad I did my research and had a brand new tub of Permatex ceramic brake paste ready for use in appropriate areas on my brake pads before installation.

12) I forgot how satisfying it is to bed in new rotor and new brake pads after a job well done.
Got to love that stink of hot brake pads and rotors! ��

13) I guess I got my money's worth out of the left front rotor. You think? See photos below.

I finally was able to upload to photos. The verses before second is after. I'll try to upload three more photos of some of the in between work. They should be self-explanatory. You'll be seeing pictures of a filthy Rusty Hub. Unfortunately I don't have and after picture of the hub. But picture in your mind something n
nice and clean and shiny. I spent a lot of time with the wire wheel getting the hub perfectly clean and then slathered it pretty good but never-sieze. It was dark and I was really tired at that point.
Attached Images
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File Type: jpg IMG_20181028_120922.jpg (575.3 KB, 26 views)
File Type: jpg IMG_20181028_122118.jpg (216.9 KB, 28 views)
File Type: jpg IMG_20181028_122147.jpg (236.2 KB, 27 views)
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I wasn't speeding...I was QUALIFYING!

Agency Power muffler , Ebay midpipe, Magnaflow resonators BREMBO GT BBK, Endless Racing brake pads , TC Kline SA Coilover (front) Swift 448lb springs, BC Racing coilover rears (for now), TMS front(30mm) and rear(25m) adjustable anti sway bars, AKG FCABS, TMS limiters on AKG RTABs, and powerflex subframe bushings, HPF AND TMS weld in Subframe kit, 10 hours of additional subframe Stitch welding above and beyond what's usually called for, CF trim interior and exterior clear coated by my guy with heavy duty UV protection, Vorsteiner CF rear diffuser, Strassentech type CF lip, Aurora Angel Eyes, DRL,HID Fogs 6k, Headlights HID 6k, D-Force racing wheels sandblasted and powder-coated semi-gloss black, Square set up 265/35-18, built-in Passport Escort 9500CI .. custom mount of controls in ash tray, , rareQuatro CF shock tower brace, Pioneer Avic Z3, BSW stg 1speakers, BSW sub

Last edited by bosundave; Sun, Oct-28-2018 at 05:26:15 PM.
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Old Sun, Oct-28-2018, 01:42:57 PM   #2
Paulo M
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Default Re: Things I learned from changing my Brembo 2-piece rotors.

Interesting timing, I’m doing this now. Although I went with Brembo rotors to be on the safe side in terms of fitment. My fasteners and bolts came off surprisingly easy, almost seems like they can be reused. Good thing the brembo rings come with new hardware.

I’ll be putting mine back together soon, this is pretty helpful. Thanks
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Old Sun, Oct-28-2018, 04:11:43 PM   #3
bosundave
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Default Re: Things I learned from changing my Brembo 2-piece rotors.

Quote:
Originally Posted by Paulo M View Post
Interesting timing, Iím doing this now. Although I went with Brembo rotors to be on the safe side in terms of fitment. My fasteners and bolts came off surprisingly easy, almost seems like they can be reused. Good thing the brembo rings come with new hardware.

Iíll be putting mine back together soon, this is pretty helpful. Thanks
Maybe mine were assembled by a guy who decided to use way way too much thread locker. You could see that nearly every thread of every machine screw was slathered with the stuff.

Yes, Obioban said the Brembo rotors were much superior. I just could not swing those this time around. Next time....

Here are a couple more photos
Attached Images
File Type: jpg IMG_20181028_122722.jpg (265.4 KB, 23 views)
File Type: jpg IMG_20181028_122810.jpg (666.5 KB, 23 views)
__________________
I wasn't speeding...I was QUALIFYING!

Agency Power muffler , Ebay midpipe, Magnaflow resonators BREMBO GT BBK, Endless Racing brake pads , TC Kline SA Coilover (front) Swift 448lb springs, BC Racing coilover rears (for now), TMS front(30mm) and rear(25m) adjustable anti sway bars, AKG FCABS, TMS limiters on AKG RTABs, and powerflex subframe bushings, HPF AND TMS weld in Subframe kit, 10 hours of additional subframe Stitch welding above and beyond what's usually called for, CF trim interior and exterior clear coated by my guy with heavy duty UV protection, Vorsteiner CF rear diffuser, Strassentech type CF lip, Aurora Angel Eyes, DRL,HID Fogs 6k, Headlights HID 6k, D-Force racing wheels sandblasted and powder-coated semi-gloss black, Square set up 265/35-18, built-in Passport Escort 9500CI .. custom mount of controls in ash tray, , rareQuatro CF shock tower brace, Pioneer Avic Z3, BSW stg 1speakers, BSW sub

Last edited by bosundave; Sun, Oct-28-2018 at 05:30:47 PM.
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Old Sun, Oct-28-2018, 04:28:54 PM   #4
HassanEido
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Default Re: Things I learned from changing my Brembo 2-piece rotors.

Great post. Those brembos =$$$
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Mods:
-Custom CF airbox
-SSV2 catless headers(with a modified collector extention), Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
368.4 whp 289.1 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
Why not to use after market bearings with surfacetreatments and /or increased clearance
http://www.m3forum.net/m3forum/showp...4&postcount=10
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Discussing Torque Spec thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)