4 bolt to 6 bolt diff swap

[Xear0]

Hey guys im lookin at gettin a 3.91 LSD 4 bolt diff for the M, but if im not mistaken my car is a 6 bolt. ive read al over that you can just replace the input/output shafts on the diff to make it work.

What i havent read is a diy, what is involved with this swap, or how hard it is.
i searched around on google but i keep finding the swap for the whole diff, not the input/output shafts.

any help?

[Neel]

You're correct, the 95's are a 6bolt flange. Instead of going through all of the trouble, why not just change the drive shaft to a 4bolt ? Unless you are going to put down north of 400hp or do clutch dumps like its your job, it should hold up.

[Neel]

You can also change the 4bolt flange on the diff to a 6bolt flange

[Xear0]

Originally Posted by Neel

You can also change the 4bolt flange on the diff to a 6bolt flange

thats wat i wanted to do. how hard is it to swap the flange on the diff? im assuming you have to change the whole input shaft? which would require cracking open the diff?

thx for the help!!

[redline2041]

do I have an lsd diff in my 92 325i

[Roland H]

most 96 build year cars have 6 bolt driveshafts as well.

[Neel]

the flange actually is separate iirc. I actually have a 6bolt flange for when i "eventually" put my euro 6spd in.

[Xear0]

Originally Posted by Neel

the flange actually is separate iirc. I actually have a 6bolt flange for when i "eventually" put my euro 6spd in.

Haha "eventually". Thx man you've been a great help. Unfortunately the diff I was lookin at sold so Ill have to keep lookin around. Ill find one tho!

EDIT: actually ended up getting the diff. should be here towards the end of the week.

[Neel]

i think ive had the euro 6spd for 2 years now :P

[Xear0]

So wait uve had a euro 6 speed sittin around for 2 years and never put it in???

This confuses me. Lol.

[Neel]

I was going to put it on, then i bought an AR-15. I then was going to put it on again this year and then i ended up buying an e28 535i 5spd. LOL I keep buying stuff. :/

[Xear0]

haha see i cant do that. once i get a part for my car i wont want to do anything but install it. and if i cant install it (i.e. waiting on other parts) i just will want to screw or tinker with it and stuff. (you should have seen it when i got my cams.....omfg)

im so wierd lol

[Roland H]

Originally Posted by Xear0

haha see i cant do that. once i get a part for my car i wont want to do anything but install it. and if i cant install it (i.e. waiting on other parts) i just will want to screw or tinker with it and stuff. (you should have seen it when i got my cams.....omfg)

im so wierd lol

I've had a LTW flywheel and a euro cluster sitting in my basement for a year.... I tend to buy something and then start a completely different project, and then get back to my original project.

[Neel]

oh yea more info on mayhem.. i see you dont own an E36 either.

[Roland H]

Originally Posted by Neel

oh yea more info on mayhem.. i see you dont own an E36 either.

Mayhem is just that, mayhem. Not too sure what's going on with it yet... But we shall find out soon.