Can't get a BMW driveshaft cut and welded and balanced in STL, I found out today. No jig because no business...they told me to look at cali. I did find out, however, that the reason they can't even do the work is because of the center u-joint. Apparently, they can't even get this off without destroying it and it is required to center the 3 bolt flange properly and then balance. I'm fairly certain I want this job done properly, so onward ho.
Many internet searches and phone calls later, I settled on Driveshaft Specialist, Inc in San Antonio. They seemed to know what I was talking about and asked germane questions, which I found oddly comforting. It was almost like being on this forum. Anyway, I centered the diff in the slotted holes and measured flange to flange (minus 1 1/16" for the guibo) and came up with 59 11/16", which was largely in-line with previous posts. They asked me 2 questions which I didn't expect....
1. Which size 3 bolt flange did I have on my transmission? Didn't know there was more than one. Figured that out.
2. Distance from back of guibo to center of bolt holes for center bearing. Huh? Oh, I can measure it, but WTF does that have to do with anything?
I decided to ax a few questions myself. You guys aren't gonna cut the shaft aft of the center ujoint are you? No. Well, if that stays the same, and I give you a flange to flange length of the final driveshaft, why do you give a shit about this measurement? The slots are like 1 1/2 - 2" long, how accurate is that measurement? Anyhoo, armed with a LOT of previous postings and the PDF of the BMW manual, I felt like I held my own in the driveshaft wars. $470 for a *new* driveshaft (including shipping to my home and shipping the core back) was more than I planned to spend, and I now have a center bearing and 3 bolt flange for sale, but I'm hoping I have this bitch whacked. I'll let you know