How to refurbish BMW Limited Slip Differential (LSD)

[@MrCrazy240]

These vids are so satisfying to watch! Thanks to your series of how to turbo, I finally bought an M50 to swap in my E30 :D

[@jeremye21]

Your videos are very helpful, im planning to m52 swap my 77 E21 and you have shown me that almost all that I need to do it

[@B3nnyzs]

Drain plug is on the side on the e34 diff, you can see it under the driveshaft flange ;)

[@pazi88]

znitchy Oh you are right. I didn't even bother to look for that because I had to open the cover anyway :D

[@guilerdorn]

Very good video. How to check if the LSD plates are used without disassembling the diff ?

[@pazi88]

You can try lifting one rear wheel of the ground, support the one in ground that it can't rotate, no handbrake, neutral gear and try to rotate the wheel which is on the air from the driveshaft nut using torque wrench. Go up in torque and you should be able to rotate the wheel without the torque wrench clicking at about 60 to 80 Nm. If it rotates without the torque wrench clicking at less than 60 Nm the plates are probably too worn.

[@aaronmuona9032]

tosi hyviä videoita, jos jotain pitäs sanoo ni puhetta koittaisin vähän hidastaa niin kuuluis selkeämmin:)

[@pazi88]

Arskis _1 Juu koko ajan koitan sitä treenata. Puhuminen ei ole se meikäläisen paras osaamisalue :D

[@luizov88]

Can you make a video, showing how to swap lsd casette type 188 to e46 dif.

[@GTO2800]

Really helpful, thanks !

[@haweraki]

as always valid info , thank you

[@rtradu]

thank you so much friend, really helpful video

[@Spetke77]

Hyviä videoita teillä :) Jos lukkoa halutaan kiristää niin osaatteko sanoa mitä sille sitten tehdään?

[@pazi88]

Jani Aarrekivi Tuolta välistä kun poistaa 4mm paksuisen prikan ja pistää sen tilalle kolmannen kitkalevy parin, niin saa 40% lukon. Jos haluaa lisää, pitää koneistaa eri ramppikulmat ja/tai lisää tilaa neljännelle levyparille.

[@Spetke77]

Eli toi 40% lukko on vielä simppeli toteuttaa kun ei tarvi mitään koneistuksia. Onkohan sillä millainen vaikutus vakioon 25% lukkoon käytännössä?

[@pazi88]

En osaa sanoa. Ei ole tullu kokeiltua. Tommonen ehjä 25% jo on meille riittäny.

[@pajakuokkalaracingteam2587]

ralliautoihin laitetaan 10kg esijäänitystä. varmaa toimii katuajossakin.

[@michaelj4953]

You should make a video of converting a gear set and carrier on a 210 for the e34.

[@pazi88]

Just swap those in?

[@lakimakromedia]

Ohh man u did really huge job with this channel. So many usefull informations!! Greatings from Poland ;)

[@pazi88]

Thanks a lot!

[@knives4apro485]

im sure with the amount im watching your vids pazi, ill be able to speak Finnish pretty soon. :D

[@pazi88]

knives4apro Saunders At least you will learn all the curse words if nothing else :D

[@knives4apro485]

ya true, i thought i learnt all the curse words from the dudesons but im always open to more mate. hahaha

[@towlie911]

The Allen head bolts on mine that hold the LSD unit in are all stripping out. They are extremely tight. Yours look pretty loose, any tips on removing them without stripping?

[@pazi88]

It's pretty normal that those bolts get stripped. Normally like half of them are so stuck that I strip the torx socket. I then just hammer in suitable size XZN bit and use that to open the bolts.

[@Suabbi]

Mulla ois työnalla e34, jossa ilmeisesti toi typ210 lukkoperä niin onko siihen ihan samanlainen vaihtaa noi kitkalevyt? Aikasempaa kokemusta ei oo perän purkamisesta, joten jos jotain tarvii ottaa huomioon niin ois mukava tietää...

[@pazi88]

Joo samanlainen homma. Muistaa käyttää vaan typ210 kitkalevyjä.

[@matiasrivas8251]

what about measuring the backslash of the dif? could you make a video ?

[@pazi88]

I will make another video where I convert regular diff to LSD one and in that I will focus more on that.

[@MrCt333]

Got an ETA on when you're making that video? I've got a whining diff and everything I've read says the E34 diff can't be rebuilt by the DIY home mechanic.

[@driftalliance1556]

still waiting for that! otherwise great job! love your channel

[@morskipas21]

Does unit fits perfect yust like that or not? I have LSD unit that l want to put in regular 188 open diff l wonder if its just plug n play?

[@vanoscrap6296]

@@morskipas21 it will be plug in if the offset in the same. However you'll need to adjust the backlash and mb the preload afterwards, afaik

[@clubherbalife6292]

Great job

[@88Sam8888]

2 things: 1-soak the new friction disks in oil before you put in the diff 2-M8 bolts used to be torqued down to 65Nm if no other instructions

[@pazi88]

88Sam8888 Those will be covered in oil once the diff is filled with oil. And 8.8 m8 bolts will snap if you tighten them to that torque.

[@thetoughcookie3665]

M8 8.8 is like 27nm. Nice video btw. Simple.

[@Vlady_e30]

Did you experiment with LSD? More clutches, or angle? I saw that you can make 25%,35,40,45,60,75% LSD diff.

[@pazi88]

You can make 40% one by removing the 4mm washer inside the unit and replace that with friction disk - dog plate pair. Other can be made by altering the ramp angles and/or machining more room for fourth friction disk - dog plate pair

[@Vlady_e30]

yes. i know but did you tried it? how car with more lock drive? now i got welded 100% lock but i want lsd put in

[@pazi88]

No I haven't. The stock 25% LSD has been enough for me when in good condition.

[@jaakkoheikkinen1411]

Kuinka pitkälle tämmönen vakio huollettu 188 lukkoperä riittää? Kun itellä olisi tarkotus laittaa 34seen ja ottaa tehoa irti sen ~400 hp

[@pazi88]

Kyllä se melko pitkälle riittä. Toki kaiken saa rääkkäämällä rikki, mut meillä e30:ssä vasta vajailla 700hp tehoilla ja rättislickseillä 10:n varttimailivedot sai tumppien boorit menemään puneelle

[@nicbrz064]

What kind of oil do you use in this diffs?

[@teemu9689]

Minkälainen homma on laittaa pikku perällä olevaan e30 tommonen typ188 perä?

[@pazi88]

Helppo homma. Tais mennä jopa bolt-on, ellen ihan väärin muista. Tai saatto vaatia vetareiden/kardaanin vaihdon kans, mutta muistikuva on että ei.

[@SotaR0tta]

Eikö noiden kitkalevyjen väliin olisi kannattanut laittaa hieman peräöljyä? Hyvä video taas kerran!

[@pazi88]

Chuck Norris Kyllä sinne menee öljyä, kun perän täyttää sillä. Ei oo kummiskaan kyseessä mitkään moottorin osat, jotka vaatii voitelua heti ensimmäisellä pyörähdyksellä.

[@mohamedmostafa-zc5ju]

thank you very helpful can you share the link of seller of friction disk and dog ear

[@pazi88]

I couldn't find the seller but these seem reasonable priced: www.ebay.co.uk/itm/Bmw-188mm-Limited-slip-differential-LSD-Sperre-clutch-disc-friction-plate-kit/262895672626

[@Cafferssss]

I have a diff in my kitchen, but when I turn it by hand from the input it gets tight and not in the same place and I cannot turn it anymore, I haven't tried forcing it or anything, it's an lsd like this. Is that normal?

[@pazi88]

No. The pinion gear in probaply completely busted. Like for example we had in this diff that was supposed to be "in good runnimg condition": pazi88.kuvat.fi/kuvat/Projektikuvat/e30+the+ONE/turbotus+2/IMG_20170525_120538.jpg

[@dannyperez2k11]

i have a 188 LSD in the same condition, is it ok to put in new friction plates when the old surface is worn out, should it be resurfaced before reassembly?

[@pazi88]

danny perez It would be better to resurface it, but it's not mandatory if the surface isn't totally destroyed. It needs special tools that we and most other people won't have. And normally the wear on the part that you don't change is just minimal scratches. The friction disk is made from softer material which is meant to wear instead of the other surface. It's like same case when you change the regular clutch. You change the clutch disk and the pressure assembly. But leave the surface on flywheel untouched in normal case. Of course if there is some metal chunks that are embeded to the surface of the diff you could carefully try to drind those away.

[@dannyperez2k11]

Good to know i can sand it without bringing it to a machine shop, my dog ear plate is bad to so could i flip it over without any issues?

[@pazi88]

danny perez You should replace the dog ear plates also as I did. The kuts normally come with those included.

[@dannyperez2k11]

Cheers Pazi!

[@Exekutioncro]

So there was no need to adjust anything?

[@pazi88]

Not in this case. Sometimes shimming is needed if the ramps are worn and need to be machined.

[@iliketorockrock]

Thank you for the short and easy guide! love the vids keep it up! :) I want to contribute to your channel, do you have stickers ore shirt i can purchase anywhere?

[@pazi88]

Thanks. No I don't have any merchandise to sell. I don't have time for such a things :D But if you want you could send small donation by paypal to [e-mail] It will be used in full to buy car parts to make these videos.

[@garde2k10]

Do you not need to set backlash on the crown wheel and pinion teeth?

[@pazi88]

Rofl Copter3000 No you don't because this doesn't change anything related to those. Just remember to put all back in the same way it was. For example the side bearing cover shims affect the backlash so you can't mix those.

[@garde2k10]

Can you make video on how to change the crown wheel and pinion into different casings? Eg e34 188mm 3.64 ratio into e36 188mm casing

[@Exekutioncro]

Wait, what keeps the output shafts in place???

[@pazi88]

Small snap rings in the lsd.

[@Exekutioncro]

@@pazi88 I only need to change my dust covers on both side because they have rusted away. That should be fairly easy right? I dont wanna touch any of the internals, as I dont have any experience with that. You think it is manageable?

[@pazi88]

@@Exekutioncro dust covers in the output flanges?

[@Exekutioncro]

@@pazi88 yes! Sorry for the late response

[@EliteHydronics.]

Brill ! gonna get the parts ordered and do this I did hear that you use ZF porsche clutch packs but there expensive did you do anything to the ramps ? many thanks Dave

[@pazi88]

I use cheap friction disks you can find from eBay for example. I included links in the description but here is one seller: goo.gl/NEYp6H

[@EliteHydronics.]

+pazi88 thanks for the link, maybe I could repurpuse my old 1mm cutoff discs haha kind regards Dave

[@aronkoosh4731]

is this the same job for a 210mm diff? if not, anyone know where i can get the best rebuild info on a 210mm including ring/pinion upgrade?

[@pazi88]

Same for typ210 too. But no idea what you mean with ring and pinjon upgrade.

[@aronkoosh4731]

pazi88 I need to change out my 3.15 for a 3.62

[@rhalyas]

So its ok to install new plates dry?

[@pazi88]

Raimo Haljas Yes. Those will be lubricated when you fill up the diff with oil.

[@rhalyas]

Even then i would say its difficult for the oil to move on those plates, when they are under pressure. Is-nt it like building an engine completely dry and without any pre-lubrication oil.

[@pazi88]

Raimo Haljas But those parts don't start moving immediately when you start moving the car, like engine parts will. And when you start driving the oil will splash all over the LSD unit lubricating it. Also the oil has tendency to creep upwards on surfaces so the whole unit doesn't even need to be covered in oil to get it lubricated. But ok. It doesn't hurt to lubricate those while installing but it's not mandatory.

[@yagivemedashits]

Never assemble a diff center dry! Especially a LSD center

[@ootakaivanp]

mites noi shimmilevyt? molemmille puolille levyjen jälkeen?

[@pazi88]

Mitä shimmejä tarkotat?

[@ootakaivanp]

@@pazi88 noita jousiprikkoja. sit kans tuol oli joku ihan ihmeen ite tehdyn näkönen ohut levy minkä ei pitås kuulua tonne

[@TheBPJo]

3:00 "Yack" lol

[@Honderas]

You had to repair the compression ring. I see even on the video, that the surface was damaged. When you have so badly damaged friction disk it is definitely because of a bad ring surface.

[@pazi88]

Again. Only coloring and minor wear that doesn't feel on finger. So it's fine. I'm well aware that if the surface is damaged, it needs resurfacing. But in this case the friction disks only were worn. But yeah I could have explained more in detail what needs to be checked.

[@tanaka836]

the diff is 25% ??

[@pazi88]

Mike Whiddett Yes it is.

[@HeikkiSaari]

LSD:n testimateriaali puuttui lopusta. :)

[@pazi88]

Tulee myöhemmin ;) Ei täällä voi edes ajaa vielä, kun tiet on lumessa.

[@DasSparschwein]

Of course it has a drain plug. Its in the middle of the yellow rear mount.

[@pazi88]

It's fill plug. I just later noticed that the drain plug is on the side of the diff.

[@DasSparschwein]

Ah, you're right - I did remember it wrong (have an E34 myself and did change the diff oil). Nice work in the video :)

[@skibumwannabe5492]

Nice claw hammer😂

[@yagivemedashits]

Skibum Wannabe this bloke is a back yard hack

[@Aabohax]

Olis ikävää asian kannalta unohtaa peräöljyt tallin pöydälle ku perää käyttää irti ja öljyt on laskettu ulos

[@pazi88]

Meillä on kerran unohtunut laittaa öljyt perään. Kyllä siinä ehkä 5-10 km kerkes ajaa ennenkuin leikkas 100:n vauhdissa kiinni :D Ei muuten hinaus ihan perinteisesti onnistunutkaan, kun takarenkaat oli lukossa :D

[@garydarkness]

Terve. Can anyone subtitle this video please?

[@user-im3dr8yo3o]

tuleeko tästä drifting auto

[@pazi88]

Ei tuu. Semmonen muuten vaan leikkikalu.

[@Honderas]

Have this lsd already died? It was very BAD refurbish! It wouldn't live a long time if any will refurbish like it is shown in this video.

[@pazi88]

Artik It still works flawlessy. Why it would fail?

[@Honderas]

If you will now open this lsd, you will definitely find damaged friction plates and something more.

[@pazi88]

Artik Why?

[@Honderas]

Mainly because the compression ring surface was hardly damaged and you didn't fixed it.

[@pazi88]

Artik It wasn't. There was some visible marks but nothing that you could feel with finger. So it's fine.

[@Vandalasz]

Video : how NOT TO rebuilt a bmw LSD diff