Will a m4 lsd diff fit into a 4 series?

exquisit · 01-23-2018, 02:55 AM

As per title, couldn't find anything using search so asking here

what needs to be done or bought to do a conversion

cheers

Polo08816 · 01-23-2018, 05:43 AM

You need to just sell your car and buy an M4.

Mike@N54Tuning.com · 01-23-2018, 01:55 PM

Quote:

Originally Posted by Polo08816

You need to just sell your car and buy an M4.

Mike

RoundelM3 · 01-24-2018, 12:45 PM

There are a couple of aftermarket LSDs available for F3x cars - a much less expensive proposition than the M4 version, which is electronically controlled. Non-M F3x cars don't have the required wiring or DME programming to support that. Quaife is one brand, and VAC motorsports and some other tuners have LSD solutions as well.

dr.roro · 01-24-2018, 02:41 PM

Don’t forget there’s even an OEM M Performance LSD for the F3x.

Timevampire · 10-24-2023, 01:50 AM

I don't think the diff itself bolts on but if you get the whole subframe then you will only need to shorten your drive shaft and modify the rear brakes and schocks slightly.

Then you have the issue of the E-lsd which, without control, defaults to open. So you have to use a pwm to vary the clutch pressure. On the m cars, there is a module controller, that in different modes will actuate the clutch packs differently. Short of tapping into the cars wiring harness and reverse engineering the diff control module, you can control with a knob from a duty cycle controler from Amazon (30amp). The only problem is a manual control has limited useful use cases. Drag racing and drifting would be great at full lock. So if you want to instal a drift button, it's awesome.
Great way to get stronger axles also.

Eschmacher · 10-24-2023, 07:45 AM

Quote:

Originally Posted by Timevampire

I don't think the diff itself bolts on but if you get the whole subframe then you will only need to shorten your drive shaft and modify the rear brakes and schocks slightly.

Then you have the issue of the E-lsd which, without control, defaults to open. So you have to use a pwm to vary the clutch pressure. On the m cars, there is a module controller, that in different modes will actuate the clutch packs differently. Short of tapping into the cars wiring harness and reverse engineering the diff control module, you can control with a knob from a duty cycle controler from Amazon (30amp). The only problem is a manual control has limited useful use cases. Drag racing and drifting would be great at full lock. So if you want to instal a drift button, it's awesome.
Great way to get stronger axles also.

Way to necro a 5 year old thread.

Timevampire · 10-24-2023, 09:47 AM

Didn't notice that. I guess I should be checking dates before posting. Thanks for the tip

thejeremyman9 · 10-24-2023, 03:07 PM

Quote:

Originally Posted by Eschmacher

Way to necro a 5 year old thread.

His username is TimeVampire

Achaine · 01-11-2024, 05:58 PM

Quote:

Originally Posted by Timevampire

I don't think the diff itself bolts on but if you get the whole subframe then you will only need to shorten your drive shaft and modify the rear brakes and schocks slightly.

Then you have the issue of the E-lsd which, without control, defaults to open. So you have to use a pwm to vary the clutch pressure. On the m cars, there is a module controller, that in different modes will actuate the clutch packs differently. Short of tapping into the cars wiring harness and reverse engineering the diff control module, you can control with a knob from a duty cycle controler from Amazon (30amp). The only problem is a manual control has limited useful use cases. Drag racing and drifting would be great at full lock. So if you want to instal a drift button, it's awesome.
Great way to get stronger axles also.

Hello hi I am just in the process of adapting the complete rear axle of m4 f82 on an e30.. it is a project that I am carrying out here in France.. I was looking for information on how to manage the diff lock and I came across your message.. could you explain to me in more detail the modification to manage the diff manually? sorry for my broken English!! to the pleasure

franck.Vlad on Instagram, maybe easier ?

F32Fleet · 01-12-2024, 01:09 PM

Quote:

Originally Posted by exquisit

As per title, couldn't find anything using search so asking here

what needs to be done or bought to do a conversion

cheers

Iirc the M3/4 LSD is electro-mechanical.

Just go buy a LSD from diffsonline.com

01-23-2018, 02:55 AM	#1
exquisit New Member 0 Rep 7 Posts Drives: n/a Join Date: Mar 2016 Location: aus iTrader: (0)	Will a m4 lsd diff fit into a 4 series? As per title, couldn't find anything using search so asking here what needs to be done or bought to do a conversion cheers
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01-23-2018, 05:43 AM	#2
Polo08816 Brigadier General 1616 Rep 3,958 Posts Drives: 2014 335i M Sport Join Date: Sep 2010 Location: MD iTrader: (0)	You need to just sell your car and buy an M4.
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01-24-2018, 12:45 PM	#4
RoundelM3 Major General 1840 Rep 6,992 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	There are a couple of aftermarket LSDs available for F3x cars - a much less expensive proposition than the M4 version, which is electronically controlled. Non-M F3x cars don't have the required wiring or DME programming to support that. Quaife is one brand, and VAC motorsports and some other tuners have LSD solutions as well. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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01-24-2018, 02:41 PM	#5
dr.roro Captain 197 Rep 832 Posts Drives: 2019 G01 X3 Join Date: Oct 2007 Location: MD iTrader: (2) Garage List 2015 BMW 435i Coupe [0.00] 2019 BMW X3 xDrive30i [0.00]	Don’t forget there’s even an OEM M Performance LSD for the F3x.
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10-24-2023, 01:50 AM	#6
Timevampire Enlisted Member 56 Rep 30 Posts Drives: 435i, delta integrale, turboLS Join Date: Jun 2023 Location: Socal iTrader: (0) Garage List 2015 bmw 435i [9.00]	I don't think the diff itself bolts on but if you get the whole subframe then you will only need to shorten your drive shaft and modify the rear brakes and schocks slightly. Then you have the issue of the E-lsd which, without control, defaults to open. So you have to use a pwm to vary the clutch pressure. On the m cars, there is a module controller, that in different modes will actuate the clutch packs differently. Short of tapping into the cars wiring harness and reverse engineering the diff control module, you can control with a knob from a duty cycle controler from Amazon (30amp). The only problem is a manual control has limited useful use cases. Drag racing and drifting would be great at full lock. So if you want to instal a drift button, it's awesome. Great way to get stronger axles also. Attached Images
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10-24-2023, 09:47 AM	#8
Timevampire Enlisted Member 56 Rep 30 Posts Drives: 435i, delta integrale, turboLS Join Date: Jun 2023 Location: Socal iTrader: (0) Garage List 2015 bmw 435i [9.00]	Didn't notice that. I guess I should be checking dates before posting. Thanks for the tip
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