Callaway Cyclone V16 Is Made From Four Motorcycle Engines
Someone pointed us to this engine Callaway developed that merges four inline-four Yamaha motorcycle engines into a 4.0L V16 engine. The engine makes 550 bhp at 10,000 rpm and 340 lb-ft of torque at 8,500 rpm. When Autoblog posted their article they claimed there was a prototype with the redline raised to 11,500 rpm, allowing the engine to make 640 horsepower. Although it appears they developed as far back as 2004, I had never heard of it.
The Callaway Cyclone V16 is a prototype engine for a future Callaway project. With its exceptionally-high specific power output, striking visuals and an exhaust note only a high revving V16 can make, this powerplant should be reserved for a very special vehicle.
The specifications -
16 cylinder, 90° V-angle , aluminum cylinder block with iron liners, aluminum cylinder heads
4.0 liter displacement (243.6 cid), naturally aspirated , electronic fuel injection
Bore: 75.50 mm (2.972″). Stroke: 55.75 mm (2.195″)
Compression Ratio: 11.5:1
Valvetrain: DOHC, 5 valves per cylinder, patented camshaft drive system
Maximum horsepower: 550 bhp @ 10,000 rpm (2.26 bhp/cid, 138 bhp/L)
Peak Torque: 340 lb-ft @ 8,500 rpm
Maximum engine speed: 10,500 rpm
Length: 926 mm (36.45″). Width: 540 mm (21.25″). Height to top of throttle body trumpets: 500 mm (19.70″)
Dry weight: 152 kg (334 lb)
Dry sump lubrication, triple plate 5.5″ diameter clutch, electronic coolant pump
This video quality is bad but it gives some idea of what it sounds like.
Original: Engine Swap Depot