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Technical question regarding caliper mounting center on e46 m3 spindles.

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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 Mon, Jan-04-2010, 12:10:46 AM   #1
WRXEATR
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Default Technical question regarding caliper mounting center on e46 m3 spindles.
Would any of you guys be willing to help me out with this?

I'm looking for the dimension for the caliper mounting center on your e46 m3 spindles.

I am currently researching OEM brake upgrade options for us e36 guys, without dropping 1k+ on BBKs. I need to know if the e46 m3 caliper brackets/calipers will bolt up to e36 m3 spindles.

The dimension for the mounting center on e36 spindles is 4.75"



Yes, I'm aware of the 850ci calipers; I have had no luck sourcing them. I am also aware of Porsche calipers, and Wilwood, Alcon, etc. I haven't gone this route because I am specifically looking for a caliper that will utilize the stock mounting center without the use of aftermarket brackets.

The goal here is to fit E46 ZCP package calipers/brackets/rotors to the e36 ///M3.
Last edited by WRXEATR; Wed, Jan-06-2010 at 12:13:30 AM.
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Old Mon, Jan-04-2010, 12:19:18 AM   #2
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At the moment I have my calipers off. It is night but I'll get you some measurments come tomorrow, if no one else chimes in.
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Old Mon, Jan-04-2010, 12:21:01 AM   #3
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At the moment I have my calipers off. It is night but I'll get you some measurments come tomorrow, if no one else chimes in.
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Old Mon, Jan-04-2010, 04:01:38 AM   #4
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abl original parts may have a six speed available.
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Old Mon, Jan-04-2010, 04:27:10 PM   #5
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abl original parts may have a six speed available.
Yeah, Alex was the first person I tried. Car-part.com has them starting @ 2200 but I was looking closer to the 1500 range.

Anyone have any luck with the dimensions?
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Old Mon, Jan-04-2010, 04:01:02 AM   #6
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as far as i remember....no, they don't mount directly up....have to make a mounting bracket.
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Old Tue, Jan-05-2010, 02:45:10 AM   #7
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anyone?
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Old Tue, Jan-05-2010, 10:05:59 PM   #8
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Measured with my dial calipers, measured at 4.800" E46 M3. Obviously it was eye balling the centers. So your 4.750" seems to be the same.
Last edited by hogger453; Tue, Jan-05-2010 at 10:10:06 PM.
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Old Tue, Jan-05-2010, 10:59:56 PM   #9
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Measured with my dial calipers, measured at 4.800" E46 M3. Obviously it was eye balling the centers. So your 4.750" seems to be the same.
Take reading from outer edge of ID to outer edge of ID and then subtract diam. of one hole. That will give you center to center.
Shouldn't this be in MM?
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Old Tue, Jan-05-2010, 11:18:48 PM   #10
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Take reading from outer edge of ID to outer edge of ID and then subtract diam. of one hole. That will give you center to center.
Shouldn't this be in MM?
TY for informing me, a 13 ex-machinist and machine tool rebulder.
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Discussing Technical question regarding caliper mounting center on e46 m3 spindles. 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)