e36 3.46, 3.64, 3.73, 3.91 lsd w/40% lockup

[diffsonline]

hey whats up guys. just wanted to let you know i am building e36 6cyl diffs for $1400 with a 40% lockup built right. been coached along by the best diff builder out there.
if anyone wanted a 60% lock up with the 3rd clutch plate and the required machining its only another $200. takes me about a week to put it together.
these are exchanged prices...
can also do a rebuild increasing the lockup to 40 for $600, which would include a freshening up of the diff.

i can ship if needed and i have a bmw tech in nashua who can do the swap for $100.

just trying to help you guys out

[rollie]

Sounds interesting...two Q's...out of interest, would you happen to know what the std lock-up is on the 3.38 out of a '97-'99 auto M3?? Is it 40%??

2) How much for this 3.46 w/ 40% you mention??? $1400?
Thanks much,
Rollie

[Dan Wang]

Standard lockup on the 3.38 is approx 25%.

[rollie]

Thanks Dan...

[Carrerax]

How much for a 3.64 ring and pinion?

[diffsonline]

just the ring and pinion? i could do that for $500 plus shipping
--dan
or the whole diff for the 1400 with a 40% lockup

[diffsonline]

Originally posted by rollie
Sounds interesting...two Q's...out of interest, would you happen to know what the std lock-up is on the 3.38 out of a '97-'99 auto M3?? Is it 40%??

2) How much for this 3.46 w/ 40% you mention??? $1400?
Thanks much,
Rollie
yes 1400 plus your old diff for a 40% lockuop 3.46
the standard lockup as dan mentioned is 25% when the diff is new.

i started building them because i saw how much people were getting for them and i didnt want to pay that.

[blackm3]

Could you let me know price for ring and pinion for 3.46

[diffsonline]

Originally posted by blackm3
Could you let me know price for ring and pinion for 3.46
u mean just a ring and pinion swap? meaning w/o the differential being touched. or you would like to buy a ring and pinion from a 3.46 and do it yourself?
i can do either!
--dan

[Dan Wang]

You can also find a e28 528e automatic 3/87> and use the ring and pinion that will fit the E36 M3 differential housing.
The ratio is a 3.46
this may be a cheaper way to go.

Dan

[95RogueM3]

what does lockup mean? How does the stock 25% differ from the 40% offered here and is more better or worse for street driving?
How much higher would my rpms run...i know with a 3.38 its about a 7 percent increase?
-Richard

[blackm3]

Originally posted by Dan Wang
You can also find a e28 528e automatic 3/87> and use the ring and pinion that will fit the E36 M3 differential housing.
The ratio is a 3.46
this may be a cheaper way to go.

Dan

Dan...the ring and pinion from e28 528e auto 3.46 will fit the e36 M3? Have you done the swap?


Stickley...yes I just need the 3.46 ring and pinion only for my diff.:)

[diffsonline]

the automatic 5 series did not come with a 3.46 as far as i know (could possibly be wrong). the tough part is getting all the parts t do the install correctly and using the correct micrometer to set lash, as well as obtaining the shims and crush collars needed.

lock-up
here is the easiest explanation...25%-factory allows one wheel to spin before the other will easier, when compared to a 40%. the guys who build diffs for a living do 40-75% lockup. this is achieved by a bunch of different ways. the more lockup the more forward thrust you will have from a dead launch and also the easier it is to put the power down when exiting a turn. autocross you need no more than 40%, while club racing the 75% works better. on the street more than 60% is unnecessary. i personally run 60% in mine as i like to drift a lot.
it took me almost a year to get all the secrets of diff building from the best in the business!!

[diffsonline]

have a 3.64 that will be done next monday if anyone is interested!! $1400 plus ur diff

[aceves]

just wondering if you can do a quaiffe in 3.64 gearing (sp ?) and how much that would run ?

[diffsonline]

i will get a price on a quaife unit today and let you know!

[cquinton]

Interested in 3.38, but maybe your 3.46 if you could give numbers in what kind of difference it would make between the two. I have the 2.97 from my 98 328, but I have the 3.2 M motor and would like to get some more acceleration. If top speed is around 130ish, I'm cool with that.

[diffsonline]

top speed with a 3.46 is just over 145mph

[JazzM]

That depends on your transmission gearing. It won't be 145 with a 5 speed.

[cquinton]

I do have the ZF 5 speed tranny, so maybe the 3.38 is still the best option for me.

[JazzM]

Your best bet is 3.38 or if you want more top speed then a 3.15

[diffsonline]

here is a quick chart
1 2 3 4 5
0 0.0 0.0 0.0 0.0 0.0
200 1.0 1.6 2.5 3.4 4.1
400 1.9 3.3 4.9 6.7 8.2
600 2.9 4.9 7.4 10.1 12.3
800 3.9 6.5 9.8 13.4 16.4
1000 4.8 8.1 12.3 16.8 20.5
1200 5.8 9.8 14.7 20.2 24.6
1400 6.8 11.4 17.2 23.5 28.7
1600 7.8 13.0 19.6 26.9 32.8
1800 8.7 14.6 22.1 30.3 36.9
2000 9.7 16.3 24.6 33.6 41.0
2200 10.7 17.9 27.0 37.0 45.1
2400 11.6 19.5 29.5 40.3 49.2
2600 12.6 21.2 31.9 43.7 53.3
2800 13.6 22.8 34.4 47.1 57.4
3000 14.5 24.4 36.8 50.4 61.5
3200 15.5 26.0 39.3 53.8 65.6
3400 16.5 27.7 41.8 57.2 69.7
3600 17.5 29.3 44.2 60.5 73.8
3800 18.4 30.9 46.7 63.9 77.9
4000 19.4 32.6 49.1 67.2 82.0
4200 20.4 34.2 51.6 70.6 86.1
4400 21.3 35.8 54.0 74.0 90.2
4600 22.3 37.4 56.5 77.3 94.3
4800 23.3 39.1 58.9 80.7 98.4
5000 24.2 40.7 61.4 84.0 102.5
5200 25.2 42.3 63.9 87.4 106.6
5400 26.2 43.9 66.3 90.8 110.7
5600 27.2 45.6 68.8 94.1 114.8
5800 28.1 47.2 71.2 97.5 118.9
6000 29.1 48.8 73.7 100.9 123.0
6200 30.1 50.5 76.1 104.2 127.2
6400 31.0 52.1 78.6 107.6 131.3
6600 32.0 53.7 81.0 110.9 135.4
6800 33.0 55.3 83.5 114.3 139.5
7000 33.9 57.0 86.0 117.7 143.6
7200 34.9 58.6 88.4 121.0 147.7
7400 35.9 60.2 90.9 124.4 151.8
7500
redline 36.4 61.0 92.1 126.1 153.8

try it for yourself man
http://www.car-videos.com/tools/speedrpm.asp?Car=Select&Num1=245&Num2=40&Num3=17&AxleRatio=3.46&Ratio1=4.23&Ratio2=2.52&Ratio3=1.67&Ratio4=1.22&Ratio5=1.00&Ratio6=&Ratio7=&Redline=7500&Increment=200&B1=Recalculate

[cquinton]

Yeah, I'd still like to get my hands on the 3.38. So that's what i'm still looking for, if you got one, i'm interested.

[JazzM]

What kind of warranty do you offer?

[themadhatter]

we just picked up a 3.91LSD @ 25% for my buddies auto M3/4 from Dan on Sunday.

it's already been installed and boy does it kick ass! :buttrock

-Ron

[JazzM]

Ron, does it drive in first or do your start from second?

T.

[themadhatter]

not my car but I would imagine that the transmission runs as normal.

-Ron

[diffsonline]

the 3.91lsd works perfectly for auto m3's

if a diff is rebuilt i offer a 30 day warranty, nobody else does from what i am told, provided you break it in properly

[Lance325is]

What would you do in a euro 3.2 with a 6sp? 3.64?

[diffsonline]

yeah a 3.64 or a 3.73 are nice choices
if you want to go sick do a 3.91 iwht the 40% lockup

[JazzM]

Do you warranty your work/parts? What are the terms?

Thanks.

T.

[diffsonline]

Originally posted by Stickley Sedan
if a diff is rebuilt i offer a 30 day warranty, nobody else does from what i am told, provided you break it in properly
paypal works best for me, core charge is refunded upon inspection of core.

[JazzM]

What is the proper break-in procedure?

Thanks...

I may be interested in your 3.46 LSD 40%. What's the price? What do I need to install it?

T.

[95RogueM3]

wow...the first page and numberous posts after that list the price at 1400 as long as you send him your old diff.

I dont know about break in procedures.

-Richard

[diffsonline]

Originally posted by uuc95m3
wow...the first page and numberous posts after that list the price at 1400 as long as you send him your old diff.

I dont know about break in procedures.

-Richard
to break a diff in properly, once its installed you do a few slow figure eights to get the fluid in the clutch plates and throughout the internals.

the price is 1400 plus your lsd diff, or 1700 outright...shipping seems to be $50 no matter where in the US

and yes i accept paypal

[///Thirtytwo]

Stickley Sedan
you got mail

[aceves]

You wouldn't willing to do a trade for a prospeed motorsports 993TT based BBK would you (plus some cash me to you)?
You didn't happen to get more info on the quaiffe did you ?

[diffsonline]

for a quaife diff you would be looking about 2300 more or less, as i cannot get a decent price on the quaife unit. i have been told by 2 club racers that the way i am building them, as are most of the other builders, the clutch packs are much less likely to break than the quaife. although the quaife does a good job also.
send me some info on the BBK and ill think about it....

[Mikey52]

I just bought a 3.46 with 40% lockup from Dan. I received it last week and had it installed Monday. Ive put about 100 miles on it so far and it seems to be working great. Ive been taking it easy in 1st and 2nd but I plan on testing those gears out on my way home today. :devillook Also, I can say that 3rd gear is now limited to ~110. :D

The only issue I had for the install was that the flange was different, but my mechanic swapped them no problem.

[963.2]

Stickley sedan,

do you have a 3.71 ?
could u tell us the difference between 25% and 40%
just don't understand how these gears work
mine is 96 E36 M3

many thx

[diffsonline]

i do have one 3.73 available. when i build adiff you get a minimum of 40% lockup on the lsd. this provides better traction as well as effectively increasing the life of the clutches.
a numberically higher gear provides more accleration at the cost of top speed.
check the link under ratios by rpm to figure out what your speed will be in each gear www.diffsonline.com
hope that helps

[95RogueM3]

Dan,
If arrag buys one of your 3.46 can i have a discount as i sent him your way? Just curious? :stickoutt

-Richard

[963.2]

Stickley Sedan,
thanks for the link, but the link from the diff lock up area is not working, I think 3.73 can reached around 97 mph, we do have some guy in H.K. are interested, E46 330, E36 3.2 etc
do you offer GB ?
we may just need the diff and the gears, without the housing !

Many thx

[diffsonline]

the price is what it is unfortunately there isnt much money in them and thats probably why everyone else gets 1800
yeah the site is still slightly underconstruction. i tossed it together to answer questions easier for people and to give them some numbers to look at!

[diffsonline]

3.46 used is sold. have a 3.64 and a 3.46 finishing up this weekend...just some updates

[str8 gone]

do you do 4:10 diff for an e36 325?

[diffsonline]

i do not currently have a 4.10 in my possesion, i could get one if thats what you want... i assume its an auto?

[Vector]

how hard is it to install the bad boys? can any mechanic do this?

[diffsonline]

yeah man it takes about an hour to swap a diff, the avg mechanic would charge i'd guess around $100 to do the swap!

[///M_Drift]

Whats the top speed on one of your 3.73 differentials?

[diffsonline]

http://www.rimpro.com/diffsonline/rpmbyratio/373.html
check that page.
or scroll around www.diffsonline.com rpms by ratio.
top speed depends on your redline basically.

[kozan]

I have a 93 325iS. I know nothing about differentials, I was wondering what the best swap is for my car, its a standard transmission. Does the diff really make that huge of a difference?

[diffsonline]

Originally posted by kozan
I have a 93 325iS. I know nothing about differentials, I was wondering what the best swap is for my car, its a standard transmission. Does the diff really make that huge of a difference?
yes a 3.46 lsd with a 5speed in a 325 can make it just as fast as a stock m3. the rpms will increase slightly from the 3.15 thats in it now to the 3.46. you would love the throttle response and the acceleration.
hope this helps man, pm me if you need some other questions answered.
--dan

[PJ750iL]

do you have the 2.93 gears?

i ask, because i want to stretch the gears as much as possible and the 2.93 lsd should be better than a 3.15 lsd, i have a 98 M3 lsd right now and either one should be good to replace my current one.

anyway how hard would it be to install the gears by someone that knows the differential a bit.
also where are you located?

[diffsonline]

pm sent... i have one of ea.

[icemann633]

i am looken for a 3.38 with 40%...can you get a hold of one and if so how much?

[diffsonline]

there are almost no 3.38s available. if i could find one and build it to 40% lockup it would be more than a 3.46 would be. (if i find a 3.38 with a blown posi or something i can get it cheaper and do it for the same $1400 exchanged as the 3.46 would run)

[icemann633]

allright cool....i will try a junk yard and sacrafice 20%

[diffsonline]

cool man i'll let u know if anything comes along my way besides used 3.46s

[diffsonline]

i just got 2 3.46 40% together and 2 3.64's if anyone is interested!!

[Androulakis]

Is a 3.91 LSD 25% lockup a good choice in a manual M3 - or am I crazy for considering this?

This will be for a reasonably aggressively driven street car.

From what I have gathered it will make the car a 0-100 monster.

Thanks,

George

[Androulakis]

Is a 3.91 LSD 25% lockup a good choice in a manual M3 - or am I crazy for considering this?

This will be for a reasonably aggressively driven street car.

From what I have gathered it will make the car a 0-100 monster.

Thanks,

George

[jdholder]

3.91 in a manual car would be fun, for about a day. Without a 6 speed, you would kill fuel mileage.

I was thinking about doing this but only with a six speed conversion.

I think the deepest gearset you would want in a stock 5 speed would be 3.46.

Sincerely,

[moadster]

can you get me a 2.93 ring and pinion for a e30/36

[diffsonline]

lemme honestly tell you that a 3.91 in a 5 speed will make you honestly slower. if you go more than a 3.64 or even a 3.73 your car will be fun around town, but will be horrible on the highway

i have a 2.93 r&p i'll pm you the details...

[QWKBMW]

Check your pm's..

[diffsonline]

thanks man...replied

[tombmwe30]

Stickley,

what do you mean by freshen up on a 40% lock up/rebuild on customers diff.Are you replacing all bearings/races/all 3 friction discs and shims for 600.00? have you been tutored by Jim??
thanks..tom b

[diffsonline]

Originally posted by tombmwe30
Stickley,

what do you mean by freshen up on a 40% lock up/rebuild on customers diff.Are you replacing all bearings/races/all 3 friction discs and shims for 600.00? have you been tutored by Jim??
thanks..tom b
freshen up i mean, take the lsd carrier out, put new clutches and do the shimming to make it 40% lockup. (for a freshen)

luckily i have not been tutored by ***, i have taken a couple apart and found poor quality, used 200k mile bearings, poorly shimmed/spaced R&P, and reused crush collar. i inspect all bearings for ANY signs of wear and replace as needed (usually every diff gets new bearings if there are more than 10k on them, ANY scoring) new clutches, seals, etc.
hope that helps clear it up

[tombmwe30]

Cool,

Its good to know that people do good work and stand behind their product...thanks , tom b

[diffsonline]

Originally posted by tombmwe30
Cool,

Its good to know that people do good work and stand behind their product...thanks , tom b
thanks man i appreciate it.

[diffsonline]

doing 3 -- 3.46 setups i just bought next week.
anyone interested?

[toussi1]

I'm looking for a 4.10 differntial Doesn't need any lockup because I don't care. How much can you get one for? And yes I have an auto.

[diffsonline]

i'll find a R&P today and get back to you. you wouldnt have any interest in a 4.27 would u?
send me a pm

[str8 gone]

pm sent!!

[95RogueM3]

dan, i sent you an email over at diffsonline.

where is your tech who will do the swap for $100. I am in Norther New Jersey and would be interested in your installer when i buy a diff.

-Richard

[diffsonline]

he is located in nashua about 20 mins from me. we could do the whole deal there. all i would need is the money to get the diff built for you.

[diffsonline]

blowing out a 3.73 lsd with 40% for $1600 shipped with fresh rebuild if anyone is interested. (will do $1300 with core)

[aMiR M3]

let me know if you get any 3.64's or 3.46's ;)

[diffsonline]

i always have 3.46 and 3.64 diffs around. i just have a TON of 3.73's which is why i was trying to sell one cheaper.

also have a bunch of 3.91 setups now.

have a 2.93 lsd if anyone needs that also.:b_hotgree :biglaughb

[Ali]

what would revs be at 80 mph with a 3.73 on an e36 m3 in 5th? Also, how much cheaper are you willing to go on them?
thanks

[diffsonline]

the price is $1600 for the 3.73 thats built now and $1750 shipped for the others.
i'll always give $300 credit for a good lsd core in the purchase.

right now i'm not doing any less than those prices, considering what the market gets for a diff. Blanton gets $1950 PLUS a core for a 3.46 with 40% lockup, and Turner gets $1800 plus a core.

5th gear at 80 mph would be about 4100rpm
here is the rpm chart for the 3.73 Gearset

GEAR -- 1ST -- 2ND -- 3RD -- 4TH -- 5TH

500 RPM -- 2.2 -- 3.8 -- 5.7 -- 7.8 -- 9.5 --- MPH

1000 RPM -- 4.5 -- 7.5 -- 11.4 -- 15.6 -- 19.0 --- MPH

1500 RPM -- 6.7 -- 11.3 -- 17.1 -- 23.4 -- 28.5 --- MPH

2000 RPM -- 9.0 -- 15.1 -- 22.8 -- 31.2 -- 38.0 --- MPH

2500 RPM -- 11.2 -- 18.9 -- 28.5 -- 39.0 -- 47.6 --- MPH

3000 RPM -- 13.5 -- 22.6 -- 34.2 -- 46.8 -- 57.1 --- MPH

3500 RPM -- 15.7 -- 26.4 -- 39.9 -- 54.6 -- 66.6 --- MPH

4000 RPM -- 18.0 -- 30.2 -- 45.6 -- 62.4 -- 76.1 --- MPH

4500 RPM -- 20.2 -- 34.0 -- 51.3 -- 70.2 -- 85.6 --- MPH

5000 RPM -- 22.5 -- 37.7 -- 57.0 -- 78.0 -- 95.1 --- MPH

5500 RPM -- 24.7 -- 41.5 -- 62.7 -- 85.8 -- 104.6 --- MPH

6000 RPM -- 27.0 -- 45.3 -- 68.3 -- 93.6 -- 114.1 --- MPH

6500 RPM -- 29.2 -- 49.1 -- 74.0 -- 101.4 -- 123.7 --- MPH

7000 RPM -- 31.5 -- 52.8 -- 79.7 -- 109.2 -- 133.2 --- MPH

7500 RPM -- 33.7 -- 56.6 -- 85.4 -- 116.9 -- 142.7 --- MPH

[resisTm3]

could you tell me the difference between 3.46 and 3.64

what would be better for my 97 e36 m3




brett.

[ADVANT123]

Is there some sort of warranty provided with these units? Is there a return policy? I'm weary of purchasing anything thats rebuilt due to bad experiences in the past, what kind of guarantee do I have that this differential will be just as good as the one I have in there (if not better) and whats the life expectancy of your differential?

[jdholder]

What's the biggest Diff I can get in an E36 Medium Case? Can I get a 4.27 or 4.45?

Thanks!!

[Rito Smooth]

PM SENT...I want a 3.46 with 40% lockup.

[diffsonline]

Is there some sort of warranty provided with these units? Is there a return policy? I'm weary of purchasing anything thats rebuilt due to bad experiences in the past, what kind of guarantee do I have that this differential will be just as good as the one I have in there (if not better) and whats the life expectancy of your differential?
there is a 2 year warranty provided with every differential that has been rebuilt. to give you an idea of why these are rebuilt, bmw never provided a 6cyl 364, 346, 410, 427 + differential. the differential i provide is the best in the industry we feel. i have rebuilt and replaced differentials built by others. as far as a return policy, no, that honestly to me makes no sense. that would be like returning a supercharger, or cams. i will take it back less shipping if it hasnt been installed, that's the best i can do.
-Dan

[diffsonline]

What's the biggest Diff I can get in an E36 Medium Case? Can I get a 4.27 or 4.45?

Thanks!!
how crazy do you want to go?
its about $1000 MORE for a motorsport ring and pinion setup, but i can get them...here is a list, and i responded to your pm
4.18 188
4.27 188
4.36 188
4.45 188
4.56 188
4.67 188
4.75 188
4.88 188
5.00 188
5.13 188
5.28 188
5.44 188

[coolcarlski]

bump