Swapped Input flange on my 3.23 LSD to 6 bolt

[Mistawall]

OK so i went and bought a driveshaft for my swap not realizing it was 6 bolt. tryed looking for a 4 bolt but it was stating to become a pain in the ass. so i just bought a 6 bolt flange. so we installed that and tightend it with the imapct gun and it got real hard to move so we loosened it and tightened it to 70# with a tourque wrench now it moves freely. thoughts? i dotn wanna fuck my shit up if i run it.

[dirtbag30]

probably already caused damage to the crush washer in the pinion bearing.

the proper way to swap flanges would be to make a mark on the old nut and pinion shaft before removing the nut. and count the rotations as you would on a tie rod just to know how far the nut was on the shaft.

and to install you tighten the nut until it starts to get tight. it should be the same amount of revolutions it took to take it off and it should also line up with the marks you made in the beginning.

or at least thats how i did it when i swapped to a six bolt flange and haven't had any problems yet.


edit

see picture

IMG_0364 by alec.ruonavaara, on Flickr

[justin_l_]

There is a crush washer on the pinion it is probably screwed now

[pantelones]

tightend it with the imapct gun and it got real hard to move so we loosened it and tightened it to 70# with a tourque wrench now it moves freely. thoughts? i dotn wanna fuck my shit up if i run it.

There is a crush sleeve that is meant to be replaced when rebuilding the diff, and it can be salvaged if you are just replacing the seal, or input flange. You actually need to use a dial indicator to re-seat the pinion seal to ensure minimal leakage. In addition to what I just stated, the steps below is what you should have done...

make a mark on the old nut and pinion shaft before removing the nut. and count the rotations as you would on a tie rod just to know how far the nut was on the shaft.

Now you need to replace the crush washer, and rebuild the pinon bearing assembly.

[Mistawall]

Fack. well the diff isnt in the car. wonder how much that will cost cuz i certainly dont have the know how for that.

[Mistawall]

i just called up a transmission/driveline guy gonna see what he will charge me...

[328ijunkie]

Impact gun, fail.

[Mistawall]

sweet so he told me to order all the seals and crap might as well replace everything since he gotta take it apart. said liek $150 in labor

[GunMetalGrey]

That's crazy cheap, and almost concerning. Most people get quoted ~1k for a diff rebuild it seems.

[328ijunkie]

wicked cheap

[Mistawall]

using this thread as a parts source

http://forums.bimmerforums.com/forum/showthread.php?1650106-The-E36-Diff-Thread

[Mistawall]

im just replace seals and crush sleeve

[justin_l_]

Yea, that's reasonable. I paid 450 for parts and labor to have the rear end in my durango rebuilt. BMW speciality shops just like to charge a lot.