Quick & sloppy engine swap (part 2)

As previously mentioned, this project was back in the accumulation stage, but I’ve scrounged enough parts to get it back on the road.

  • A 535i getting an engine swap donated a B34 engine & transmission. They’re a backup option, but might be getting installed if they check out OK. Many minor parts like the air cleaner assembly & pulleys are getting swapped onto the B32 engine.
  • I also lucked out with a Bimmerforums connection – he had saved a spare (and rare) 1989 E24 B35 harness from the scrapper!
  • A 633CSi getting parted out in Cleveland donated the engine. The E24 chassis was a rusty mess, but the engine & transmission appeared to be in excellent shape. Up on a stand she went to get a full set of new gaskets and seals.

The chassis has been patiently waiting for the motor transplant. It has a running Euro B34 installed, but that motor has a lot of blowby & very low compression.

Since I’ve sold virtually everything else in the fleet, I decided the time has come to finish up the swap and get her back on the road. Here’s how that went:

  • Disconnected the battery, drained the coolant & oil.
  • Pulled the wiring harness out of the cabin, coiled carefully on top of the motor.
  • Disconnected all the coolant hoses, drained system of all coolant. Don’t forget about the block plug, it’s a 17mm bolt low on the rear passenger side behind the oil drain channel. Removed the clutch fan, shroud & radiator.
  • Disconnected the power steering pump and A/C compressor, left them dangling out of the way.
  • Removed v-belts, front pulley & harmonic damper/trigger wheel.
  • Removed the front anti-sway bar.
  • Disconnected the exhaust pipes, dragged the complete exhaust system out of the car.
  • Pulled the transmission bolts one by one, with some ridiculous combination of 3/8″ & 1/2″ extensions & adapters.
  • Pry engine away from transmission. (Done 8/17)
  • Hoist that big old thing out of there! (Done 8/17)
  • Strip necessary parts (B35 harness, fuel rail, damper, trigger wheel, pulleys) and install them on the B32. (In Process)
  • Reverse the entire process to install the B32. (Pending)
  • Drop the new motor in. (Pending)

Aug 17 was very productive: