1973 BMW 2002 tii - Judge Judy

[phreshkid]

More diff stuff.

Two 3.64 LSDs side by side. Left side was removed from the tii yesterday (perfect working order), Right side was purchased last year as a very low mileage early e21 diff out of Northern California. I don't recognize the front cover, but it will fit a 2002.







And three diffs: two 3.46LSDs and a spare 3.91LSD



It's good to have spares.

[phreshkid]

Dont feel like reading the thread again, but has this been repainted once already or is this the original paint?

I like it, in its own ugly way

Been repainted once, in a two-stage combo. That's why I have destroyed clear coat. BMW only used single stage paint for non-metallic colors of the 70s.












Today was Differential Power Hour.

I figured it was a great time to swap out the 3.64LSD for a freshly rebuild 3.91LSD.

Here is a photo with the rebuilt 3.91 LSD unit and another spare 3.91LSD unit.


Then I pull the covers off - both are pretty.


Then I swapped covers, grabbed out a set of spacers and longer bolts, but later deemed unnecessary.



Before pulling the 3.64LSD out, I measured distances to verify if spacers were needed. Turns out I don't need them at all. This is interesting.



Someone modified the output shafts of the 3.64 LSD before installation, or this is a uber rare 2002 limited slip differential. I will verify tomorrow. I now two of each diffs, all LS.



Here is a shot of the 3.64LSD I just pulled out, next to the freshly rebuilt 3.91LSD. Notice how the output flanges are drilled for both 8mm and 10mm hardware. How cool is that.




Fresh diff installed. I didn't need to swap, but I thought a 3.91 would give the bottom end some more pep. Seems like the cam took from the bottom end of the curve and gave to the top end. And oh boy does she move.



Overall, a good swap. I also fixed the exhaust issues. No more clanking. All is well again.

[2mAn]

Dont feel like reading the thread again, but has this been repainted once already or is this the original paint?

I like it, in its own ugly way

[phreshkid]

Did some stuff.

New Borrani wheels, new plate. I actually got the car back today after nearly two weeks in the shop. All systems are go now. It's fun, it's fast, it's ugly, it's mine.

[phreshkid]

did you sell this one too??? Im still waiting for an update

Still own this one. Not "done" with her yet.



She'll get new paint, new wheels (Have acquired Borrani wheels and stock tii alloys), new interior, and various gaskets around the car.

I'll get back to working on this car in the next month.

Til then, 1600.

[2mAn]

Updates are good.

I think I'll sell the car though. The 1600 has my heart. The tii is scalded-cat fast, now. I'll explain more on that later.

xoxo

did you sell this one too??? Im still waiting for an update

[phreshkid]

Did a bunch of stuff to the tii but I probably won't post photos until tomorrow or Friday. Too lazy.

Updates are good.



I think I'll sell the car though. The 1600 has my heart. The tii is scalded-cat fast, now. I'll explain more on that later.

xoxo

[kronus]

ok, phew. was about to be surprised. my 74 did not have them..

[phreshkid]

wait, these things actually have brake pad wear sensors?

I'm not actually sure. It came with the pads, which came with the calipers.

The calipers are from a 1977ish e12 528i. They are necessary because I am running vented e21 rotors. Stock tii came with solid rotors.

So idk really. It just looks like I know what I'm doing most of the time.

[kronus]

wait, these things actually have brake pad wear sensors?

[rzerob]

Nice.

[phreshkid]

rustoleum rebuild is quick, cheap, easy, but effective :)

It worked so well! Here is a fresh CSB, and a nice, cleaned up driveshaft (I washed and scrubbed and deep cleaned before I laid the paint).



Figured I'd replaced the Flex Disc/Guibo while I was in there, as well as all hardware. You can see the old Flex Disc separating.



I removed the driveshaft this morning, got everything replaced, dialed, and installed, and by the evening, I was driving again. All efforts were worth it. Car drives good with the new gear.

A special package arrive today from IE. Fresh early e21 hubs (tii spec) and a set of IE antisway bar hardware and bushings. Andrew took the time to press in new races, bearings, dust caps, install fresh studs, threw in new lug nuts, and even added freshly-plated hardware to secure the hub to the spindle! Thanks again Andrew - that was seriously nice of you.


Just to confirm that these are in fact tii spindles:



And all put together, including refinished backing plates, all new hardware, etc. Nothing on this set up is used or reused from the current set up on the car. The goal was to completely swap the entire system and put the stock set up in storage.




Soon.

[jhaurimn]

rustoleum rebuild is quick, cheap, easy, but effective :)

[phreshkid]

Got the driveshaft out this morning. Getting a new CSB on, then a new Guibo, then slapping it all back together. I'll probably give it the ol' "Rustoleum Rebuild" before she goes back into the car.

[phreshkid]

Today I finally blew up the Center Support Bearing. So I ordered up a new CSB and 4-bolt Guibo. I hope to have all that taken care of tomorrow so that I can drive it and get her nice and tuned up.

Many things also showed up. GC suspension, Esty Carpet Kit, new flashlight, some powdercoated things, ect.

I'm still waiting on fresh early e21 hubs to get here from IE, but I'm almost ready to install onto the tii.




I may start to rip out the carpet tomorrow, though I need to finalize the sound system or at the very least, the center console piece that will house all three gauges.