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Old 01-21-2004, 01:19 AM   #1
Slowered318
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4.10:1 LSD diff info

Just incase anyone wanted to know.. this is what the inside of an E30 4.10 limited slip diff looks like..

Note the output shafts are very hard to turn in the oposite direction of each other, thus.. limited slip


Any other information people can add would be great, and use this thread as a refrence
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Last edited by Slowered318; 01-21-2004 at 01:23 AM.
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Old 01-21-2004, 01:20 AM   #2
Slowered318
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mmmmm... fresh paint
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Old 01-21-2004, 01:24 AM   #3
Slowered318
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results of my limited slip:
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Last edited by Slowered318; 01-21-2004 at 01:56 AM.
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Old 01-21-2004, 01:28 AM   #4
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Is that from the E30 m3?
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Old 01-21-2004, 01:35 AM   #5
Slowered318
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Quote:
Originally posted by mkgino
Is that from the E30 m3?
Nope.. 325ix from what I understand. bought it used.. it's more heavy duty then the origional 4.10 that came in 89-91 318is
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Old 01-21-2004, 05:20 AM   #6
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4.10 + LSD = SEX
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Old 01-21-2004, 07:27 AM   #7
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would that fit on my 84 straight drop in ?
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Old 01-21-2004, 08:19 AM   #8
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Quote:
Originally posted by snd84318i
would that fit on my 84 straight drop in ?
Yes!
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Old 01-21-2004, 08:26 AM   #9
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I think i'm going to use a 318i 4.10 non LSD in my 325...just to see how it works out...
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Old 01-21-2004, 01:33 PM   #10
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My fren had a 3.73 LSD from an iX and it is much tighter - more lock percentage. I think it's 40%. As compared to his 4.10 LSD - 25%
It's a handful taking corners in the rain... Definitely not for the uninitiated...
However, it made drifting easier....
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Old 01-21-2004, 02:38 PM   #11
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Quote:
Originally posted by fabianyee
My fren had a 3.73 LSD from an iX and it is much tighter - more lock percentage. I think it's 40%. As compared to his 4.10 LSD - 25%
It's a handful taking corners in the rain... Definitely not for the uninitiated...
However, it made drifting easier....
i hear ya brotha.. it's the drifters diff that's for shure, the thing is rock solid!
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Old 01-21-2004, 05:01 PM   #12
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Quote:
Originally posted by Slowered318
Nope.. 325ix from what I understand. bought it used.. it's more heavy duty then the origional 4.10 that came in 89-91 318is
Actually, that is from the M3. The 325ix had the big box 3.91. M42's have the small box 4.10.
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Old 01-21-2004, 05:03 PM   #13
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Originally posted by Eurostyle
I think i'm going to use a 318i 4.10 non LSD in my 325...just to see how it works out...
LOL, you'll barely reach highway speed.
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Old 01-21-2004, 05:40 PM   #14
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Originally posted by Mystikal
LOL, you'll barely reach highway speed.
No, not at all! When i went fron 2.73 to 3.91 on my old car my top speed whent from 185 to 195+ (remenber its an E)
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Old 01-21-2004, 08:19 PM   #15
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Originally posted by Eurostyle
No, not at all! When i went fron 2.73 to 3.91 on my old car my top speed whent from 185 to 195+ (remenber its an E)
Okay, I crunched some numbers. Your new max in-gear speeds:

1st: 21mph
2nd: 37mph
3rd: 57mph
4th: 81mph
5th: 100mph

You would need to shift to 4th to do a 0-60 run. It would slow you down more than anything.

BTW, if the 3.91 was on an otherwise stock ETA it could only hit 169km/h before the rev limiter.
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