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BMW 3-Series (E90 E92) Forum > E90/E92/E93 Marketplace (For Sale / Trade / Wanted) > Private Owners For Sale / Trade / Wanted > Suspension / Brakes / Chassis / Spacers > E92 335i Quaife (LSD) Differential Group Buy



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      01-17-2007, 11:18 PM   #23
kujo
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Quote:
Originally Posted by Orb
4. A clutch type LSD is going to work terrible at best. This will be especially so if there is very little development like some offering already. It is not hard to make an LSD but it is difficult to tune all the variables to an application and their very high in maintenance. If you’re going racing then this is another story.
Is this meaning an LSD won't work amazingly well with our cars ?

Or am I reading this wrong ?
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      01-18-2007, 06:51 AM   #24
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If it will fit a 335i Step Sedan then I'm in.

FWIW, Quaife makes LSD's for many BMW's at $1500 list, so on a group buy it should be < $1500.

Also, I personally contacted Quaife a couple months ago and they stated the BMW 335i was not a priority for them. Perhaps an upfront group buy can make it profitable for them?
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      01-18-2007, 02:31 PM   #25
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Quote:
Originally Posted by sdiver68
If it will fit a 335i Step Sedan then I'm in.

FWIW, Quaife makes LSD's for many BMW's at $1500 list, so on a group buy it should be < $1500.

Also, I personally contacted Quaife a couple months ago and they stated the BMW 335i was not a priority for them. Perhaps an upfront group buy can make it profitable for them?
I know that most Quaife diffs don't come off-the-shelf. They are specifically designed and produced after a group of at least 10-12 buyers show up.
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      01-20-2007, 11:15 PM   #26
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ORB,

Any new news ?
Have you confirmed we can have these built for us ?

I spoke with bmwdiffs.com

They will build an LSD into our core diff for $3850 with 3 yr. warranty.
A little steep, so a GB from Quaife would be ideal.

I really want/need an LSD in this car.
This One Legger crap just takes away from the way this car should be.

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      01-21-2007, 02:33 AM   #27
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id do it would I be able to get a 3.91?
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      01-21-2007, 09:42 AM   #28
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Quote:
Originally Posted by schneid4323 View Post
id do it would I be able to get a 3.91?
this LSD does not change your ratio. If there is a stock E90/E92 out there that had that ratio, you could get the diff from that car + this LSD unit and have 3.91 LSD

Lets get some more people on this bandwagon!
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      01-21-2007, 10:02 AM   #29
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Quote:
Originally Posted by kujo View Post
ORB,

Any new news ?
Have you confirmed we can have these built for us ?

I spoke with bmwdiffs.com

They will build an LSD into our core diff for $3850 with 3 yr. warranty.
A little steep, so a GB from Quaife would be ideal.
+1 on news

bmwdiffs at $3850? kiss here -->
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      01-21-2007, 10:18 AM   #30
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It has only been one week and there are still not enough people yet. You have to be patient but this is a good start for only a week.

We really need 15 people to make this happen so the company, at the very minimum, can amortize development cost. The biggest problem of buying a one of LSD is they are expensive and very little development and testing will go into the product if any. It is important to me that we get a properly developed product.

I would encourage any one who really wants this to be proactive in getting people to sign up for this.

Quote:
Originally Posted by kujo View Post
ORB,

Any new news ?
Have you confirmed we can have these built for us ?

I spoke with bmwdiffs.com

They will build an LSD into our core diff for $3850 with 3 yr. warranty.
A little steep, so a GB from Quaife would be ideal.

I really want/need an LSD in this car.
This One Legger crap just takes away from the way this car should be.

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      01-21-2007, 10:25 AM   #31
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You can certainly change the gearing to what you want but this is outside a group buy. There are several vendor who do sell the gearing that will bolt right on.

Quote:
Originally Posted by schneid4323 View Post
id do it would I be able to get a 3.91?
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      01-21-2007, 10:39 AM   #32
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I do believe the Quaife differntal will work extremely well for this car. It is superior technology to a very outdate clutch/ramp style LSD.

It is my personal opinion that the clutch style LSD is just not going to work very well unless it is extensity tested and tuned for this car. It is not impossible to tune a clutch style LSD but it is difficult and is likely why BMW has just not bother with them. I should have stated this is my opinion and not fact…you will have draw your own conclusion.





Quote:
Originally Posted by kujo View Post
Is this meaning an LSD won't work amazingly well with our cars ?

Or am I reading this wrong ?
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      01-21-2007, 10:41 AM   #33
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If the LSD is under $2K and is a "drop in" installation and easily removable on my leased car...count me in too.
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      01-21-2007, 10:54 AM   #34
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It's a 'drop in' to a point.
the entire Differential is removed and taken apart.
The LSD is then installed in your stock 3.46 gears.

2K would just be for the LSD.
Then, you'd have to pay for install.
I'd guess at 3-4 hours labor, min.., then the same cost to remove your LSD and return the Open Diff to your casing for return of lease.

With all the mods we're doing, our leased cars can probably be sold for more than the buyout on the lease anyway, so you can leave all mods on and sell, instead of turning in.
I sold my ZHP and profited $4,800 including the cost of the mods as well.
Though, that was a special case of course.....

I was quoated $2,550 for diff and install on my e46 ZHP.
Install was about $600 of it, I believe.

We'll have to see what happens I guess.

I'd be willing to pay a few hundred over 2K if we only have 10 people and they'd be willing to make a run of 10.

Keep us updated Orb.

kj
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      01-21-2007, 11:07 AM   #35
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I do not see the price going down with these quantities. Quaife will only produce this product if it is profitable and that future sales are viable. Since the 3 series is a large scale production it should be when compared to any of the BWM line. It is hard to believe they did make a Z8 product but it was produced because of a group buy.

Initially I have confirmed that the E90 330i, E90 335i and E92 335i with a standard and automatic do share the same differential housing which also looks to be the case for all 3 series 2006 onwards. If you still interested officially add your name to the list. Before going ahead with this a group buy a compatibility list will be listed so if any reason it not compatible then there is no obligation.


Quote:
Originally Posted by sdiver68 View Post
If it will fit a 335i Step Sedan then I'm in.

FWIW, Quaife makes LSD's for many BMW's at $1500 list, so on a group buy it should be < $1500.

Also, I personally contacted Quaife a couple months ago and they stated the BMW 335i was not a priority for them. Perhaps an upfront group buy can make it profitable for them?
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      01-21-2007, 07:08 PM   #36
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Can sdiver68 and schneid4323 please post you intrest by placing yourself on the list. Being on the list can't be conditional so you need to state your intentions.

1. Kujo
2. RichP (tentatively on specfication being meet)
3. Specialque
4. Stressdoc
5. Patric 335
6. bmwmike
7. Orb
8. sdiver68 (tentatively on specfication being meet)
9.
10.
11.
12
13.
14.
15.

X. Driver72 (confirmation required as you answer is conditional)
X. schneid4323 (confirmation required as you answer is conditional)
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      01-21-2007, 10:16 PM   #37
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This car is a fun drive as is.
But, with some tuning and an LSD with added grip of both tires, this car will be transformed.

If we can get an LSD for 2K, an 'enthusiast' would be NUTS not to spend that money that way.

Fill that list boys and girls !

kj
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      01-22-2007, 03:03 PM   #38
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Bump!
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      01-22-2007, 03:16 PM   #39
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well Im definitely interested. pm me with more info when you know more about it.


9. Ryan(E92)
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      01-22-2007, 03:42 PM   #40
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why don't you guys wait it out a little bit and see if the e90 M3 variable LSD will fit...IM 90% sure it will share the same housing and should be a direct swap.

IM sure the 335 uses the big gears like the M cars do because of its massive torque.

my 2 cents worth lol
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      01-22-2007, 04:39 PM   #41
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so this Quaife LSD is compatible with the DSC system? where would u take it to get installed?
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      01-22-2007, 04:49 PM   #42
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Quote:
Originally Posted by grkm3 View Post
why don't you guys wait it out a little bit and see if the e90 M3 variable LSD will fit...IM 90% sure it will share the same housing and should be a direct swap.

IM sure the 335 uses the big gears like the M cars do because of its massive torque.

my 2 cents worth lol
It most likely will not work for two reasons:

There is a strong chance the M3 will have a unique subframe and the unit will be physically larger (like the E46 m3).

The gear ratio that it will come with will be very incompatible for most E90s (read the 335) I would expect the M3 to have at least a 3.63 rear end; it is going to be suited to a high RPM/low torque NA motor, not a low RPM/high torque application (like the 335)
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      01-22-2007, 05:23 PM   #43
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Quote:
Originally Posted by RichP View Post
It most likely will not work for two reasons:

There is a strong chance the M3 will have a unique subframe and the unit will be physically larger (like the E46 m3).

The gear ratio that it will come with will be very incompatible for most E90s (read the 335) I would expect the M3 to have at least a 3.63 rear end; it is going to be suited to a high RPM/low torque NA motor, not a low RPM/high torque application (like the 335)
+1.

And I think the E46 M3 diff is electronically controlled (it's being referred to in the literature as the M-Diff). If the E9x M diff follows the same pattern, you won't be able to use it in non-M cars because these cars don't have the diff control software (and HW?).


If I had the car already, I'd be on this list. As it is, I won't have it back to the US until sometimes in August...
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      01-22-2007, 06:00 PM   #44
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BMW uses 3 gear sets in all there cars for like the past 30 years.I highly doubt they will change that in the next M3.

Bmw uses 3 sizes of differentials. The 3 sizes are a referance to the diameter of the ring gear.

First the small 168mm differential, which is comonly found in the 4cyl chassies like E30 and E36 318, 2002, and E21 320 and 323.

The second or medium 188mm size is found in most 6cyl chassis. Such as E30 325, e36 325 328 323 m3, E36/7 318ti, also Z3 coupes, and roadsters,E46 325 323 328 also E30 M3, and E24 6 series.

Finaly the large Differential 210mm. This unit is found in all 8cyl, and 12cyl chassis. Like E32 740 and 750, E31 840 and 850, also E34 M5,E24 M6, and E46 M3.

If some one can conferm that a 335 uses a 210mm gear set you can bet your car an e90 M3 lsd will drop in.

how do you think all the people running around with 3.91s and 4.10s in there e46 M3s got them?Do you guys think that Dinan or some company made custom gears? lol they came out of old school 210mm cars like the 6 series and 8 series

All BMW differentials weather LSD or open use one of theese 3 sizes. The easiest way to tell what you have in your car is to count the bolts on the output Bearing race/ oil seal mount behind the output flange. This flange will have 4 bolts for a 168mm, 6 bolts for a 188mm, and 8 if it is a 210mm.
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