After a year of searching, an Alpineweiß story

[enrike]

Wow! I really enjoy reading your thread, the attention to detail makes me want to make a better effort when working on my ride.

[iwantspeed]

I went to the junkyard this labor day weekend.
it was 50% off everything, I found a 1988 325I automatic with no crash damage, not sure why it was in the junkyard.
the engine bay was covered in oil gunk and grease.

A benefit from the car being automatic is that the subframe has lived an easier life and is less prone to engine mounts being pulled up on the passenger side and pushed down on the driver side.

A benefit of it being covered in grease there is a slightly better possibility of the subframe not having any rust. After degreasing it and thorough cleaning with carb cleaner, no rust woohoo!

fresh junkyard front subframe


all clean with motor mount and sway bar reinforcement plates mocked up


motor mount upper

motor mount lower

sway bar tab

[iwantspeed]

New Burr king belt grinder makes quick work on getting these reinforcement plates to fit properly.

[bzboardz]

i need to do this ^^ great work!

[iwantspeed]

i need to do this ^^ great work!

Yes,
Once I install mine I will have a spare front subframe.

[iwantspeed]

Hey guys I got a limited slips diff in a 3.73 ratio but the weird part is that it came from an automatic. I thought all automatics came with a 4.10
Anyways. The output flanges turn in the same direction. So its good
I counted the amount of rotation form input on the diff to the output flange.

Scanned the vin and confirmed that the car has a factory limited slip.

the diff id tag has an S before the ratio number signifying that it's a limited slip


Factory stamp on top of the diff

Got some maintenance items.
Redline 75W90
Output flange seals and circlips
Rear diff cover gasket

Inside it's guts. No metal shavings when I drained the diff
No excessive wear pattern.

[iwantspeed]

I just checked the back lash on my lsd diff,and I'm stoaked to find it to be only 0.003 thousands on the drive side of the ring gear and on the coast side of the ring gear.

[iwantspeed]

I pressed the old bushing out.

New powerflex 70a durometer diff bushing.
I'm pretty impressed with the fit.
Nice tight press in fit.
Bushing is 2 parts with a sleeve and 2 big washers.
Thanks Bob(blackout) he took his bushing out of his prepped diff cover becuause I didn't have time to wait for shipping from powerflex. I'm trying to get this diff installed before the next autocross.

[bzboardz]

great choice with the powerflex!

[iwantspeed]

great choice with the powerflex!

Thanks to your feedback and positive review, it helped me make a decision.

[iwantspeed]

After installing the lsd diff I took it to an autocross with BMWcca at California speedway in the city of Fontana.

[iwantspeed]

[iwantspeed]

I have a busy weekend ahead of me.
Uuc dssr 187mm
Late model centered shift knuckle.
pillow ball
pin
selector shaft seal
output seal
lock ring
Garagistic front delrin carrier bushings
Brent5671 rear delrin carrier bushing
New Allen screws for my UUC evo3 lever
And a shift rubber boot

[Crippled Crip]

love your build/car alex!

[iwantspeed]

love your build/car alex!

Your Derek's younger brother right?
Thanks.