Big progress this weekend. First start up.
Took today off so that I could have a 4 day weekend this week and get stuck into the compact. Pulled the N42 out.
Cleaned up the engine bay a bit
Few things fitted while the engine was out. CMP solid steering coupler, clutch hard line, smaller heater valve from the 330. Had to adapt the EVAP purge line from the larger OD pipe on the compact to the smaller OD pipe from the M54. Made a fitting that looks pretty factory and just clips into the original connector.
Put in a third pedal.
I'm super picky with wiring and hate when it's not tidy so a lot of time was spent making sure everything looked pretty original when wiring in the clutch switch. Power and ground from the brake pedal and the DME wire runs under the dash with the factory loom. I omitted the EWS wire and opted instead to just code out the need to press the clutch to start, it's not needed and tidier.
When swapping from a N42 you have to wire in the AC compressor as well since it's part of the engine harness on the N42 and part of the chassis harness on M54 cars. Instead, since I'm deleting SAP which is in the same position as the AC compressor wiring, I just cut and changed the SAP connector to the correct one for the AC. The SAP wiring goes through a relay behind the glovebox so I bypassed it and moved the SAP pin at the DME to the chassis connector for the AC. No new wires needed, a much better solution than running a new harness all the way across the car IMO.
My reverse switch was wiring in line with the factory harness while I had the engine out so the only additional wire running into the ECU box is the clutch switch wire, everything else utilizes the factory wiring.
New clutch and flywheel on. Gearbox with all detents replaced, new guide tube, pivot pin etc.
Started on the first crank.
Snapchat-1404950484_1.mp4
Still lots to do. Waiting on some parts to finish rebuilding the rear end. Cooling, AC system, front end etc. Can't wait to drive it.