Old World Charm: 1918 3-4hp Lorenz Engine

An engine collector unexpectedly stumbles upon a Lorenz engine, which he had been wanting for years.

| February/March 2019

The left or sideshaft side of Rudy Adrian’s 1918 3-4hp Lorenz. (Photos by Bill Vossler).

Manufacturer: Ignac-Lorenz Co., Kromeriz, Moravia, Czechoslovakia
Year: 1918
Serial No.: 7130
Horsepower: 3-4hp (rpm not listed)
Bore & stroke: 4in x 6in
Flywheel: 23in x 3in
Ignition: Spark plug w/magneto
Governing: Hit-and-miss, sideshaft governor
Cooling: Tank, thermosiphon

Brass tag attached to the engine casting reads “Original Lorenz.”

Engine enthusiast Rudy Adrian had been keen on getting a Czechoslovakian-made Lorenz engine for years. Why? For starters, his wife, Xenia, is of Czechoslovakian heritage; her grandfather emigrated from Czechoslovakia and settled in Ohio. Plus, he just liked how they looked. “Years ago at the Baraboo, Wisconsin, show, a fellow had a Lorenz engine,” Rudy says. “I liked the way it looked. It still had the factory cart on it, and the wheels were neat-looking. It was very European in appearance.” But finding one in the U.S. took a bit.

Owner Rudy Adrian with his 1918 3-4hp Lorenz.

Finding a Lorenz

For many years, simply wanting a Lorenz was as far as Rudy’s aspirations went. But then one day he was talking to a customer at his magneto and igniter repair shop, Adrian’s Magneto Service. “We were just chatting on the phone about engines, and he asked if I had bought anything lately. I said, ‘No, I’m kind out of room, but I would like to buy a Lorenz engine, so if you ever come upon a small Lorenz that’s for sale, let me know.’” Rudy didn’t expect the immediate response he got. “I have too many engines, too, and I have a small Lorenz I would let go,” the caller said. Naturally, Rudy jumped at the chance to buy the engine.


Gas Engine Magazine A_M 16Gas Engine Magazine is your best source for tractor and stationary gas engine information.  Subscribe and connect with more than 23,000 other gas engine collectors and build your knowledge, share your passion and search for parts, in the publication written by and for gas engine enthusiasts! Gas Engine Magazine brings you: restoration stories, company histories, and technical advice. Plus our Flywheel Forum column helps answer your engine inquiries!

Facebook YouTube