After having some problems with the engine running a little hot I parked the car and decided to add a pusher fan to the radiator. I replaced the thermostat so I could check it off the list but decided to leave the 5-blade fan on the engine and add the pusher fan to see if that would be enough. If it's not I'll change the water pump and convert to the later fan/clutch setup to.
As a lot of you know, I work at a wrecking yard so I have access to a lot of hardware, brackets, mounts, metal, plastic, a lot of misc stuff but we deal in mostly newer cars so I don't have access to any old BMW stuff. I grabbed a broken duel motor fan assembly off of a Toyota and took the motor and fan blade off. They use this motor/fan on a LOT of their Toyota, Lexus and Scion vehicles. I also found some shock tower ring washers that were about the same size of the fan motor to use as mounting brackets on the radiator.
Something a little disappointing but really not a big deal... I centered the fan on the radiator and verified that the radiator is centered in the sheet metal opening, checked my clearances and went for it. After getting it all installed I noticed the fan was not centered behind the kidney grille opening. What the hell! After double-checking everything I finally realized that the sheet metal opening for the radiator is not centered on the nose panel so even though everything else is on center, the fan sits slightly to the right when looking at the front of the car. Everything is black and behind the grilles so it won't be noticeable, but it still bugs me a little.
Modified shock tower washers for brackets with some foam tape. Fan motor and fan off a Toyota.
Bracket on engine side of radiator.
Bracket with "standoffs" for fan motor.
The radiator has to go in with the engine fan in place so the fan motor and fan blade are put on after the radiator is installed. I'm happy with the way it turned out, except for the centering aspect of it.