I've done all my own work since the late 70s. I'm careful and methodical, and think I do pretty good work. Unfortunately, time and weather didn't cooperate and I turned to a well regarded local independant BMW mechanic to do the work I didn't have finished in time for this season's early events. He has very good reveiws among the BMW types, and is a racer and track day instructor.
The Tuesday before a 2 day NASA HPDE at VIR I dropped the car at the shop in the morning. In the car were all the necessary parts except a few OEM bits like bushings. I provided a list of what parts I brought, and all the work to be performed, much of which overlapped.
What I wanted was: Remove exhaust system at headers. Remove driveshaft. Drop diff and subframe. replace diff and Powerflex subframe bushings. Replace upper and lower outer control arm balljoints. Replace upper inner control arm bushings. Install adjustable lower control arms (inner bushings already installed) Install AL flywheel-Clutchmasters clutch+p-plate. Install rear main seal while there. Install new center bearing and Guibo when reinstalling Install front control arms w/ Powerflex bushings Change trans-diff-engine fluids Swap race pads in, bleed brakes enough for fresh fluid in the calipers. Install Zionsville race cooling system Install Stewart water pump, leave mechanical fan off Install underdrive pulleys Wire SPAL double relay 2-speed fan harness Mount 4 direzzas Align to specs and set cross weight.
This is a long list, but much of the work overlaps. If I had a lift at my disposal and all the special bushing pullers and pushers, I'd expect 2 full days should get it done.
Wednesday I called the shop to verify it was still on schedule; if it wasn't going to be done, I could sell my slot for the event, but the window to do that closed Wednesday evening. Getting a straight answer wasn't easy, but the said it'd be done. Thursday came and went. Not done yet.
Friday morning, they were saying lunchtime; at noon it was 2, then 3 then 4 then 5...
Finally at 7PM I'm standing in the shop while the owner is wrapping his huge abomination of wiring up in 10 feet of harbor freight split-sheath, a roll of electrical tape and 50 zip ties. He test drives the car, and his counter guy rings up the ticket.
It's $5100.00. That's 36% the original purchase price of the car. I said "wait...that can't be right..." write up guy allowed they "let me slide on a bunch of stuff"
There was no estimate provided and no breakdown of labor time by job. I extrapolated about 46 hours of billed labor. The car was in their shop during business hours less than that amount of time by 10 hours.
At this juncture, I'm supposed to be 75 miles into a 240 mile trip into rural Virginia, and it's not getting any earlier. I pay the bill, and collect the car.
The instant I try the clutch I about crap myself. It's light as a feather, like a couple pounds, and doesn't disengage til it's pressed firmly on the floor. It feels broken.
BTW, the owner said he had the trans "in and out 3 times" because the "slave cylinder blew up" when he depressed the pedal. I got this news on the phone as a reasone why the car would be late. I inquired whether he'd see the bold face warning on the installation instructions advising that the friction disc installs ~springs toward flywheel~ reverse to common oem BMW friction discs...He repeated this several times 'til he eventually tried that...
I drove back and told the guy "I've only installed maybe a dozen clutches in cars, but this simply feels wrong". He said it would be fine in a few miles.
I went home. It was nearly impossible to select first gear at a stop light, but it did improve with use, so I took secondary roads home and to VIR, and the time I was there it felt odd but better.
Since then I've had to replace the upper fuse box housing under the hood which he broke connection block mounting tabs off of, and completely remove and re-do the fan wiring so it would both work, look tidy, and not set the car on fire.
Then the power steering pump sh1t the bed 2 days ago. He replaced the line set to fix a weep/leak, installed the underdrive pulley, and refilled the system w/ Redline D4 ATF.
I called to discuss and like my discussion about the laughably poor wiring job, he showed a complete lack of concern.
I bought a remanufactured OEM pump which I'll do myself, correctly in about 2 hours. This whole deal is a lesson learned.
Here's a sad fact: I could have bought a 4 post lift and paid myself to take a week off work, and it would have been less expensive, and I wouldn't be wondering what effect it has when you destroy 2 slave cylinders dead-loading a backwards-installed friction disc.
Grrrrrrrrrrr.