The 4 Piston Racing facility in Danville, IN houses two buildings – one is 12,000 sq.-ft. and the other is 2,500 sq.-ft. The shop is very heavily focused on Honda cylinder heads and engine work to the tune of 300+ engines and 1,000 cylinder heads annually!
This build of a 1963 356 B Cabriolet Porsche done by Marlon Goldberg of Workshop 5001 features a four-cylinder 2.5L engine called the Polo engine. It uses mixed and matched parts from almost every generation of air-cooled 911 engine ever built, as well as parts from some of the water-cooled era. The result is this oddity Porsche powerplant, and it’s awesome!
This more than 100-year-old engine gets a new lease on life thanks to the guys at UCF Machine Shop. The antique rebuild is our Engine of the Week.
From single cylinder engines to four cylinders and all the way to V6 and V8 power plants, outboards can deliver 2.5 hp to 600+ hp, and the desire for more keeps climbing.
Porsche’s decision to develop a new four-cylinder engine stems from its need to improve fuel efficiency and emissions ratings across its model line. The new engine will come standard in the Boxster and Cayman models. There has been talk of a four-cylinder 911, but that’s rather unlikely. The new engine features a horizontally opposed, “boxer” engine, denoting