Wizeman WP 928 S4 Marine Engine (1986)

J. Wizemann & Co. was founded in 1923 in Stuttgart by Julius Wizemann (1882-1957). The company has produced different iron and steel components and since 1960’s Wizemann has been engaged also in engine marinisation. Later a separate brand called Wizeman Marine was created (please note there was a single “n” in the brand name and “nn” in the company name).

A newsletter from Wizeman Marine from September 1986 advertised a marine engine based on the new 5-litre V8 32-valve Porsche 928 engine. The 32V V8 car engine developed 212 kW on model year 1986 when it was fitted in the Porsche 928S and 235 kW from model year 1987 (starting August 1986) in the Porsche 928 S4. The marine engine developed 221 kW according to DIN 6271 for marine engines (60% relative humidity at 27º C/80º F).

Keep going. This is where it gets good.

Stuttcars Membership is for people who'd rather spend an hour inside one option code than skim ten headlines. The rest of this story — and every other one like it — is a few seconds away.

Every members-only story

Deep history, driven reviews, market reports and the full archive.

No ads. None.

The whole site reads like a magazine, on every device.

Every Porsche, researched

Model-by-model hubs: production numbers, specs, options, colors.

30% off the shop

Every Stuttcars shirt and piece of merch, all year.

Join Stuttcars — Keep Reading

$35 a year. Cancel anytime, no hoops.
Already a member? Sign in

BY PORSCHE PEOPLE, NOT A CORPORATION. Your membership keeps a small independent team of historians, ex-racers, engineers and journalists doing this.

Wizeman WP 928 S4 Marine Engine (1986)