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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 Sat, Dec-29-2018, 11:25:30 PM   #1
///mtree
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Default Need some help with Brembo rear calipers

Good Afternoon all,

I was hoping I could get some help from you all. A while back I purchased a set of Brembo rear calipers. I was told these were a discontinued piece from Brembo as they are now sold in a complete set with larger rotors. This was supposed to be a rear calipers upgrade that utilizes the stock 328mm rotor.

I didnít get a chance to install them when they arrived but Iíve now started working on the car and got around to doing the brakes. I have run in to an issue. The brackets line up with the mounting points on the ďearsĒ and install fine but when I have the rear rotor in place the caliper brackets are too ďshortĒ as in the caliper itself rests on the edge of the rotor and doesnít go far enough down to line up with the mounting holes.

Has anyone used this set or are familiar with it? Iím wondering if Iím using the wrong rotor or this was meant for another vehicle?

Iím attaching photos of the caliper with the bracket as well as the bracket by itself for reference.

IMG_2746.jpgIMG_2748.jpgIMG_2750.jpgIMG_2751.jpgIMG_2752.jpg


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Old Sun, Dec-30-2018, 05:06:44 AM   #2
WOLFN8TR
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Default Need some help with Brembo rear calipers

What are the part numbers on the rear calipers you have? In the DIY link PM TboneM3 "Tyler" and see if he can assist you.

PORSCHE CALIPERS:
996.351.425 (driver side front)
996.351.426 (passenger side front)
996.352.421 (driver side rear)
996.352.422 (passenger side rear)

Porsche 996 BREMBO BBK Photo DIY

http://www.m3forum.net/m3forum/showthread.php?t=600427
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Old Mon, Dec-31-2018, 07:21:11 AM   #3
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Default Re: Need some help with Brembo rear calipers

I mean if it’s hitting the rotor then maybe wrong caliper, bracket or they mill down the caliper for a different car. Also did you trim the shield?
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Old Mon, Dec-31-2018, 07:33:31 AM   #4
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Default Re: Need some help with Brembo rear calipers

Perhaps you were lied to about it fittong this car? Sounds like this set is not meant for a 328mm rotor, or there are mismatched brackets? Whatever distance it is from the bottom of your pads to the bottom of the rotor face, is how much thicker you'd need those brackets to be or how much less, than 328mm, the rotors these fit would be. You can buy proper brackets direct from brembo, I believe, if that's the issue. Look for your calipers' part #. Post it here for reference, if you would.

These calipers aren't 996 porsche brembos, so the brackets you might see mentioned often here or see on ebay or ecs, wouldn't be what you'd need, afaik.
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OE CSL trunk Sportline 8S 18"x8.5/9.5" MPSS 245/275 APEX 75mm Studs Brembo 996 4 pot 36/40 345mm CSL & 28/30 328mm CSL ZHP "712" rack Pioneer/CDT/Eclipse/Kicker

Last edited by TboneM3; Tue, Jan-01-2019 at 05:48:27 AM.
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Old Tue, Jan-01-2019, 04:43:50 AM   #5
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Default Re: Need some help with Brembo rear calipers

Are you sure you have the 328mm stock rotors and not the csl ones?

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Old Tue, Jan-01-2019, 05:45:16 AM   #6
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Default Re: Need some help with Brembo rear calipers

Quote:
Originally Posted by tey elvis View Post
Are you sure you have the 328mm stock rotors and not the csl ones?

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irrelevant, though, because they're the exact same dims, 328mm x 20mm.
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Evolve-R Alpha N Evolve CSL CF Airbox Eventuri Scoop Supersprint V1 stepped 2.5" SS V1 S pipes 2.5" + 200 cell HFC OE sect 2 SCZA 2.5" sect 3 Besian RE pullies WPC'd OE bearings oil catch can fan/SAP/washer delete CSL battery

GroundControl S/A Koni (Hyperco/Eibach 300/600) + tall RSMs Hotchkis front sway (med) rear strut bar TMS camber & subframe plates Eibach alu rear camber arms RE trans mounts AKG poly subf/diff 95a SDW RTAB weighted ///M knob + ZHP alcantara boot + UUC DSSR + delrin bushing Mason clutch pedal + brass bushing TMS black pedals delrin brake pedal bushing

OE CSL trunk Sportline 8S 18"x8.5/9.5" MPSS 245/275 APEX 75mm Studs Brembo 996 4 pot 36/40 345mm CSL & 28/30 328mm CSL ZHP "712" rack Pioneer/CDT/Eclipse/Kicker
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Old Tue, Jan-01-2019, 06:12:01 AM   #7
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Default Re: Need some help with Brembo rear calipers

Quote:
Originally Posted by TboneM3 View Post
irrelevant, though, because they're the exact same dims, 328mm x 20mm.
My bad

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Old Tue, Jan-01-2019, 06:05:57 PM   #8
///mtree
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Default Re: Need some help with Brembo rear calipers

Thanks for the responses. I was looking for a number on the caliper and I found some markings on the inside and bottom which were difficult to make out. It looks like on the inside of the caliper on the non mounting side (where the black Brembo lettering is) it is marked with

1 6972 02

The inside half where the caliper mounting bracket is looks like

1 6971 02



The bottom of the caliper looks to be staged with

S (could be an 8) 340 (maybe 346?)


Iím not sure how part designation is done on these.


IMG_2755.jpgIMG_2756.jpgIMG_2758.jpgIMG_2757.jpg



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Old Tue, Jan-01-2019, 06:14:06 PM   #9
///mtree
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Default Re: Need some help with Brembo rear calipers

I also took a picture of the part number on the mounting bracket.

It says P/N 90.2551-B S/N 0203009

IMG_2759.jpg


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Old Thu, Jan-10-2019, 03:01:37 AM   #10
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Default Re: Need some help with Brembo rear calipers

Problem solved?

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Discussing Need some help with Brembo rear calipers 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)