It's done!! finaly. And it was worth every hours and penny spent on it! I did it yesterday.
First, from open to lsd, the difference in traction is simply day and night. Now I can actualy ACCELERATE on an icy/snowy road. It seriously improved my traction from a dead stop. I totaly recommed it. I also noticed that I gain some good speed while drifting, when I would usualy not gain any, more likely loose some speed and/or gain a little depending of the type of turn.
Second, from 3.23 to 3.46, personnaly, I'm realy happy with that. I wanted a shorter gear ratio. The only minus point is off course, fuel economy. Beside that, I noticed smoother acceleration, and off course there is supposed to be and increased acceleration but I didin't test that yet because my gf was with me.
Misc : the job took an overall of 6 hours in a garage with 3 good men. we took our time. and were not always working on my car but also on my friends ans such so it took longuer. but it is indeed a long job. We had to heat every single allen bolt from the driving axles, it was a pita. And the torch damaged the flanges a bit. the little metal guard that protect the hole where the seal is. I'll just try to avoid dirt roads.
I ended up changing all 3 flange, input flange was bigger on the 525 (3.23), and axles flanges were bigger on the 535(3.46) so I had to change all 3 but it's not a big job. I did a fluid change as well with some 75w90 syntec gear oil. About the torx, I did a mark on the nut as I was suggested. But I checked the torx at the garages computer and I torqued it a bit more than the mark. So far so good, it get home well so I think we did everything right.
My new RPM at 100 km/h (around 62 mph I think) is 2700 rpm. Can't remember where it was with the 3.23 but it's definatly higer now. Think it was around 2400 or 2300. Anyone can confirm that statement?
Wish I had brought my cam, didin't take any pics. sorry guys.
Error 404
Always nice to complete a project.
I'm looking to do the same. Thanks for sharing your feedback. It's on my "To Do List" for spring.
All the time and money I spent on my cars; I would do it all over again… /// M POWER
I did the same only in reverse. 3.46 open to 3.23lsd. Real easy to drive in the snow. Whatever improvement in fuel mileage I gained will be erased once the turbo is installed this summer.
If anyone is getting rid of their 3.23 limited slip at a decent price, lemme know, I'd like to find one before the S50 goes in.
I put a 3.73 in mine.. Didn't do that much difference RPM wise.. Round 500rpm difference.. I can do really quick overtakeing in 5th gear now without haveing to downshift
Still has deecent fuel economy and top speed..
BMW E34 Touring 92/8 525/5 Electrical black sports leather, 3.73 LSD. Black on black
BMW E30 Touring 89/3 325/5 Manual black sports leather, 3.91 LSD. Diamond Black on black
- From sweden yah b0rk b0rk b0rk -
BMW E34 Touring 92/8 525/5 Electrical black sports leather, 3.73 LSD. Black on black
BMW E30 Touring 89/3 325/5 Manual black sports leather, 3.91 LSD. Diamond Black on black
- From sweden yah b0rk b0rk b0rk -
According to my but dyno, there is a small increase in acceleration. Nothing crazy, but fun indeed. I can't wait to test it on the standing 1/4 mile. I want to do the same time as my 535.
Error 404
Bookmarks