E21 with Upgraded M10 and Weber Carburetors

The cis fuel injection system that came in late M10 engines was revolutionary in its time. However, in the modern era the system has become antiquated and difficult to service.

On an M10 engine, Weber carburetors are a great upgrade option that improve serviceability and power. They make the engine more responsive and fun to drive, while giving it a satisfying growl.

This 79 320i came to us looking for a refresh and a small power increase. A newer M10 engine from an E30 318i was installed, with new Weber carbs. The camshafts were upgraded to 284 duration cams and a lightweight flywheel was installed. The engine bay was stripped and repainted, and many engine components were replaced or repainted to give the engine area a complete refresh.

Photos

Visit our Facebook page to see more photos of this build.

“Mr. Z”, the Turbocharged E34 Wagon

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

This 1994 525i wagon — affectionately dubbed “Mr. Z” — recently spent some late nights under the knife to have a turbo installed. This brought it from family-friendly to wickedly fast, while still keeping the wagon functionality.

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

The Custom Fabricated Exhaust to Downpipe Wastegate

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

English Wheeled Intercooler End Tanks

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Turbo Setup Bolted On

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Custom 3-Chamber Blowoff Valve Muffler

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Downpipe & Charge Pipe

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Welding the Downpipe

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Completed 3.5″ Exhaust

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Adding a Coolant Path to the Wastegate

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Custom Fabricated Coolant Reservoir

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Final Dyno Tune – 370hp and 320 ft/lbs of torque. Thanks OnPoint Dyno!

Mr. Z -- Total Motor Werkes Turbo BMW E34 Wagon

Test Driving

To learn more, visit our Facebook page and the Mr. Z Photo Album.