Thanks man. It was something I would always struggle to find when trying to do these jobs myself, so I wanted to make sure I can help as many others out!
Amazing result, thanks for sharing the process in so much detail. 👌 Did you have to do any work with the shims to make the mesh perfect or was it good enough to go?
Thanks man. I’m going to put it on the back burner for a while and decide further down the line whether to change the shims or not. It’s within the middle 1/3 so it’s close to correct, but I’ll see how I feel about it one day..
I would re-drill the cross bolt holes in the lower platern supports to restrict how far sideways it can slide to always stay on the pins. Just an idea.
I'm late finding this. Great video. I am in the US and have a 99 Z3 Coupe with the 2.8, now with 136k miles. I have excessive backlash on the output side of the diff - not measured, just really loud clunks during shifting and a grinding / graunch noise after making 90 degree turns and getting on it. Everything I have read about the diff in the 2.8 Z3 (from vendors selling replacement diffs) says it has a 3.15 with Torsen LSD, and that only the M Coupes got clutch pack LSDs. Did the UK/Euro 2.8s get a different LSD from the US models, or is my information wrong? Thanks.
The best thing for you to do is check yourself. The difference between the torsen and clutch lsd units is very obvious. Then to see if it’s the motorsport lsd unit compared to the normal, the holes are elongated on the lsd unit compared to the normal circular holes! With the loud clunks and excessive backlash, you will be wanting to check the condition of the bearings and gears. Hopefully it’s just a bearing failure causing the increased backlash!
@@tonyevans5853 getting a shop to build diffs is definitely not cheap, they have access to a lot of equipment that makes their job much more efficient! The main things when completing diff changes is checking the backlash, meshing, preload torque of the pinion shaft and preload of the output hubs
I haven’t checked the break away torque yet, but yes all clutch and dog ear plates replaced. They made the 4 plate diff with 40% lock, no preload and asymmetrical ramps. Very little of them around
Thanks Patrick, its a Preloadrr tool which I purchased from a bearing website. I have the dimensions of it if you want to make your own, it’s a pretty simple piece of kit
Sooo good that you are making such great videos and adding part numbers for the spare parts in the description,. Thank you.
Thanks man. It was something I would always struggle to find when trying to do these jobs myself, so I wanted to make sure I can help as many others out!
currently starting a restoration on my e30 and these videos are super helpful and very well made ! thank you
Great to hear, hope it goes well!
Came out real nice. For extra geek points, add the 'S' stamp to the diff case denoting it's an LSD.
Thanks! Yes I have wanted to do this! Very good idea, it is also missing the tag which is a shame as I don’t want to add a counterfeit!
You needed to check the clearance inside the LSD case with the new friction discs. It is possible to be out of spec with the new ones.
Great to see you back, awesome video as always! Result on the 4 plate LSD! Look forward to seeing more 😃
Thanks!! Have a few vids to do, then we’ll have to see where it goes..
Incredible job
Thanks Logan😎
I'm refreshing my BMW Z3 1.9 which has a 3:45 diff... plus I fancied zinc plating the hardware so this has been perfect !!..
Nice one! Hope it all goes to plan, zinc plating is a must for me whilst I’ve got everything taken apart
great work as always
Thanks my guy
Amazing result, thanks for sharing the process in so much detail. 👌 Did you have to do any work with the shims to make the mesh perfect or was it good enough to go?
Thanks man. I’m going to put it on the back burner for a while and decide further down the line whether to change the shims or not. It’s within the middle 1/3 so it’s close to correct, but I’ll see how I feel about it one day..
Excellent video!
Appreciate it!
Star of the day 🌟
Thanks!
I would re-drill the cross bolt holes in the lower platern supports to restrict how far sideways it can slide to always stay on the pins. Just an idea.
Good video's..😊
@@shahrinabubakar9999 thanks!!
I'm late finding this. Great video. I am in the US and have a 99 Z3 Coupe with the 2.8, now with 136k miles. I have excessive backlash on the output side of the diff - not measured, just really loud clunks during shifting and a grinding / graunch noise after making 90 degree turns and getting on it. Everything I have read about the diff in the 2.8 Z3 (from vendors selling replacement diffs) says it has a 3.15 with Torsen LSD, and that only the M Coupes got clutch pack LSDs. Did the UK/Euro 2.8s get a different LSD from the US models, or is my information wrong? Thanks.
The best thing for you to do is check yourself. The difference between the torsen and clutch lsd units is very obvious. Then to see if it’s the motorsport lsd unit compared to the normal, the holes are elongated on the lsd unit compared to the normal circular holes! With the loud clunks and excessive backlash, you will be wanting to check the condition of the bearings and gears. Hopefully it’s just a bearing failure causing the increased backlash!
My diff on my m3 e36 3.0 rumbles after 50 mph after a pinion and drive change😮 might have put the spacers on the wrong sides
Usually with a pinion + crown change, you will need different spacers. Have you checked the meshing and back lash of this new setup?
Checked the backlash, not so much the meshing, it’s been a nightmare getting someone to do it so having a go myself
@@tonyevans5853 getting a shop to build diffs is definitely not cheap, they have access to a lot of equipment that makes their job much more efficient!
The main things when completing diff changes is checking the backlash, meshing, preload torque of the pinion shaft and preload of the output hubs
Great video, enjoyed watching the process. What spray penetrant and welder do you use?
Thank you, the penetrant is Penol which I prefer over wd40. And the welder is a R-Tech MIG 180, a great machine!
Niiice!
Thanks man!
hi how did you fit this to the rear beam on the e30 as it has only 1 fixing point and that rear bracket is it e 36
@@davidthomas8317 i fabricated a custom cross member and diff mounting for the e36 rear cover. It can be seen in my episode 13
Great work! I just swapped 3.73 ratio in my m3 188mm diff. Can I ask where did you bought the Preload Measure device? The RED One. Thank you!
Thanks! It’s just a suitcase weighing scale!! Not perfectly accurate but I checked and calibrated it to where I was happy enough to trust it
@@BadE30 thanks! But where did you know that you need 2.5kg of force? Where did you get this info? 😁
8:20 fucking great hahah
Sometimes I show my mistakes, but not all of them haha
Nice job. Did you check lsd brake away torque and/or replaced clutch disks and dog ear plates?
Did bmw actually built a 4 disc diff?
I haven’t checked the break away torque yet, but yes all clutch and dog ear plates replaced.
They made the 4 plate diff with 40% lock, no preload and asymmetrical ramps. Very little of them around
Actually thinking about it, due to having no preload like a normal 188 LSD, you can’t do the break away test!
Another great video, where did you get the preload tool you used?
Thanks Patrick, its a Preloadrr tool which I purchased from a bearing website. I have the dimensions of it if you want to make your own, it’s a pretty simple piece of kit
@@BadE30 awesome. I'll be in touch, I'll just make my own with some flatbar - would need the dimensions.THanks
@@freakboy9189 not a problem! Just message me on Instagram if that’s ok?