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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, Apr-17-2017, 09:31:20 PM   #31
Abad46
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Default Re: 4 clutch machineless unsprung LSD

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Originally Posted by bigjae1976 View Post
Why a 3.45? Did you swap in a 5 speed?


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Went with 3.45 because of S62 lol.

3.62 was too much for road america and 3.15 was just not enough for autobahn CC. 3.45 has proven to be juuuust right. Just like 4.10 was by far the best I used for the tracks I frequent when I had the S54.
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Old Tue, Apr-18-2017, 12:27:08 AM   #32
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Default Re: 4 clutch machineless unsprung LSD

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Went with 3.45 because of S62 lol.

3.62 was too much for road america and 3.15 was just not enough for autobahn CC. 3.45 has proven to be juuuust right. Just like 4.10 was by far the best I used for the tracks I frequent when I had the S54.
Nice...would explain the screen name!

Thanks for the info and I'm sure tikamak says the same.

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Old Wed, Apr-19-2017, 08:18:04 PM   #33
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Default Re: 4 clutch machineless unsprung LSD

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I was thinking about going the same route. An older diff with the ZF unit will run $250 at a minimum. Then clutch discs, parts, etc...you're getting close to an OS Giken or a ZF conversion from Diffsonline or Jim Blanton.
I didn't track the costs of the entire diff rebuild and swap, but the donor diff complete from an e32 750iL was $80 from pickandpull.
The steels and frictions I replaced were sourced from Blanton, and not expensive, but I understand he no longer has them. The ones that came out of the core actually looked fine... went into my bud's e28 lemon racer.
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Old Wed, Apr-19-2017, 11:47:22 PM   #34
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Default Re: 4 clutch machineless unsprung LSD

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I didn't track the costs of the entire diff rebuild and swap, but the donor diff complete from an e32 750iL was $80 from pickandpull.
The steels and frictions I replaced were sourced from Blanton, and not expensive, but I understand he no longer has them. The ones that came out of the core actually looked fine... went into my bud's e28 lemon racer.
The problem is I'm going to have a hard time finding a 750iL in a Pick N Pull yard in KS with a limited slip rear still in it.
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Old Thu, Apr-20-2017, 12:24:10 AM   #35
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Default Re: 4 clutch machineless unsprung LSD

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The problem is I'm going to have a hard time finding a 750iL in a Pick N Pull yard in KS with a limited slip rear still in it.
Took me about 9 months to find one in the Chicago area that wasn't insanely priced lol
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Old Thu, Apr-20-2017, 05:34:53 AM   #36
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Default Re: 4 clutch machineless unsprung LSD

What's the going rate for a 750 or 535 diff? I've found $275 and $350.


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Old Thu, Apr-20-2017, 04:58:45 PM   #37
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Default Re: 4 clutch machineless unsprung LSD

Just browsed the Pn'Ps around here... no 750s or 540s. Next big case LSD I find... I'll snag it!
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Old Thu, Apr-20-2017, 05:16:18 PM   #38
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Default Re: 4 clutch machineless unsprung LSD

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Just browsed the Pn'Ps around here... no 750s or 540s. Next big case LSD I find... I'll snag it!
I'd be interested if you can keep the total price shipped in the $250-$300 range. Really just want the LSD unit and axle stubs. Don't need the 3.15 R&P or the case.

I'll have an extra M Variable lock LSD unit if you want to work out a trade.
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Old Fri, Apr-21-2017, 04:39:51 PM   #39
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Default Re: 4 clutch machineless unsprung LSD

I'll keep my eyes open for you.
Sorry, but no use for the M Variable... I already threw one away!
Steve
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Old Fri, Apr-21-2017, 09:17:42 PM   #40
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Default Re: 4 clutch machineless unsprung LSD

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I'll keep my eyes open for you.
Sorry, but no use for the M Variable... I already threw one away!
Steve
Thanks!
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Discussing 4 clutch machineless unsprung LSD 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)