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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Sun, Apr-22-2012, 11:24:53 PM   #1
enderw88
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Default 6 Bolt Differential Input Flange

Just spent the last hour searching here, real EOM and Google looking for 6-bolt input flanges to E36 differentials. There is a lot of information on how to do the swap from four bolt to six bolt, but I can't figure out which cars had six bolt input flanges so I can source one for my upcoming transmission swap.


Does anyone know what cars had 6 bolt input flanges?
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Old Sun, Apr-22-2012, 11:28:31 PM   #2
m3onrails
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Default Re: 6 Bolt Differential Input Flange

Pretty sure it was random, there's no method to the madness but I do know a few 95's that had them, where as most of the later years I've seen have a 4 bolt flange.
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Old Sun, Apr-22-2012, 11:31:06 PM   #3
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Default Re: 6 Bolt Differential Input Flange

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Originally Posted by m3onrails View Post
Pretty sure it was random, there's no method to the madness but I do know a few 95's that had them, where as most of the later years I've seen have a 4 bolt flange.
YAY, go Configuration Control! I can't even find a part number for the little beasties...
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Old Sun, Apr-22-2012, 11:33:43 PM   #4
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Default Re: 6 Bolt Differential Input Flange

I think it's the same thing with the 2 or 4 rear brake lines... funny how BMW did things at such random on these cars. Good luck in your search!
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Old Sun, Apr-22-2012, 11:53:20 PM   #5
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Default Re: 6 Bolt Differential Input Flange

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Originally Posted by m3onrails View Post
Pretty sure it was random, there's no method to the madness but I do know a few 95's that had them, where as most of the later years I've seen have a 4 bolt flange.
Incorrect. 6-bolt drive shafts ended 10/1996. The only 4-bolt shaft on 95 was the automatic M3.

6-Speed trans + 6-bolt diff can use;
-E46 M3 shaft (PNP 100%, just requires bolts in place of the studs found on the E36) <--- Superior IMO, uses a larger CSB
-Or a combination of any CV 6-bolt E36 rear half + the front half of the E46 M3 shaft (assuming the halves are the same spline size)
-Euro Shaft
-fairly certain the rear CV US 6-bolt + Euro front half would work too (cheaper to get front half shipped from overseas)
-4-bolt input diff swap + automatic 95,97-99 shaft (least ideal, short by a mm or two)
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Last edited by Braymond141; Mon, Apr-23-2012 at 12:29:26 AM.
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Old Mon, Apr-23-2012, 12:14:04 AM   #6
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Default Re: 6 Bolt Differential Input Flange

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Originally Posted by enderw88 View Post

Does anyone know what cars had 6 bolt input flanges?
You already have a 6-bolt flange. Search ended.
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Old Mon, Apr-23-2012, 01:19:57 AM   #7
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Default Re: 6 Bolt Differential Input Flange

I have been under there before plenty of times, and even pulled the driveshaft to replace the CSB rubber. My foggy memory said four bolts, which RealOEM for my serial number confirmed:



Quote:
Originally Posted by Braymond141 View Post
You already have a 6-bolt flange. Search ended.
When in doubt, consult reality. I went out and jacked up the car and lo and behold: 6 bolt input flange. Thanks Brett! Did you find that info in TIS?
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Old Mon, Apr-23-2012, 02:04:49 AM   #8
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Default Re: 6 Bolt Differential Input Flange

Quote:
Originally Posted by enderw88 View Post
I have been under there before plenty of times, and even pulled the driveshaft to replace the CSB rubber. My foggy memory said four bolts, which RealOEM for my serial number confirmed:





When in doubt, consult reality. I went out and jacked up the car and lo and behold: 6 bolt input flange. Thanks Brett! Did you find that info in TIS?
That generic picture does not confirm anything. You need to use the drive shaft section to confirm what you have.


No parts found matching your car.



01 DRIVE SHAFT ASSY FIVE SPEED GEARBOX L=1469MM 1 26112227222 $822.97
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Old Mon, Apr-23-2012, 02:33:20 AM   #9
enderw88
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Default Re: 6 Bolt Differential Input Flange

Quote:
Originally Posted by Braymond141 View Post
That generic picture does not confirm anything. You need to use the drive shaft section to confirm what you have.


01 DRIVE SHAFT ASSY FIVE SPEED GEARBOX L=1469MM 1 26112227222 $822.97
It's all in how you search. It is interesting though that even the detailed pictures of the differential don't show a six bolt flange, just a four.


I can't find a six bolt INPUT FLANGE (part #1) anywhere.
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Buying the car is going to turn out the be the least expensive part of this experience. Fun though.

Last edited by enderw88; Mon, Apr-23-2012 at 02:39:21 AM.
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Discussing 6 Bolt Differential Input Flange in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)