In Brief :- A list of various types of piston engines to determine the cc/hp ratio of an auto, vehicle, car,
bike, truck, aero, model, motocross, TT, industrial, PWC, jet ski, outboard or ships engine.
 engine power to capacity ratio motor cc, hp and rpm data

When several people asked for a conversion of engine capacity to brake horsepower I started collecting data on all types of engines - cars, bikes, pickups, racers, chainsaws, outboards, model engines, lawn mowers, etc. as seen in the table below. The list is not meant to be exhaustive - just enough data for a meaningful result.
The ratio between cc and hp was calculated and the result is the table below.
The data was then sorted and the results are on another page.
The increase in horsepower can be seen between an auto manufacturer's turbo, supercharged or blown model and the standard, naturally aspirated version. Most engines can be tuned with kits.

Size isn't everything. An 8.2 litre dragster produces nearly twice as much horsepower as the mighty 71.5 litre Pratt & Whitney Wasp Major, 28cyl radial aero engine - the largest production petrol engine ever built.

The largest diesel engine 'to buy' ( in 2002 ) is the Wartsila-Sulzer RTA96-C turbocharged two-stroke ships engine - the 14 cylinder, 1,556,002 cu. in. ( 25,498 litre ) model produces 108,920 hp at 102 rpm ( 234 cc/hp) weighs 2,300 tons and consumes 1,660 gallons of heavy fuel oil per hour.

The cheats of the engine world are the outboard motors. You will pay far more for a 70hp than a 60hp, but the capacity and basically the whole engine is the same and costs the same to make. A higher compression ratio and a change of carb jet size is often the only change.

Data:-
1 cubic inch ( cu.in. ) = 16.387064 cubic centimetres ( cu.cm. cm3 or cc )
1000 cc = 1 litre
1 hp (UK) = 0.7457 kilowatt ( kW )
rpm = revolutions per minute

Engines grouped by type:-
Go here for engines sorted with the highest tuned first, ie. with the lowest cc / hp ratio

 engine cc hp rpm cc / hp BMW F1 racing car 2003 - P83 2998 920 19200 3.2587 F1 racing car 1995 - rule change 3000 750 4.0000 F1 racing car 2007 prediction 3000 1000 20000 3.0000 F1 racing car circa 1987 turbo - qualifying 1494 1400 1.0671 F1 racing car 1987 turbo - in race trim 1494 1000 1.4940 Top fuel dragster V8 supercharged 8194 8000+ 8 200 1.0243 Kawasaki ZX-10R 998 182 11700 5.4835 Superbike 1000cc Class Ducati FO3 999 186 13000 5.3710 Superbike 600cc Class 599 112 5.3482 Motocross bike 125 33 3.7879 Junior motorbike - reed valve 125 28 14000 4.4643 Junior - road bike 125 20 6.2500 Junior - de-tuned 125 13.5 9.2593 Honda - stock road bike 125 33 3.7879 Honda TT race bike 125 47 2.6596 Street bike 50 4.2 7000 11.9048 Scooter 60 5.8 8500 10.3448 Fuji ATM 50 5.2 10000 9.6154 Fuji ATM 32 2.2 10000 14.5455 Briggs & Stratton Industrial engine 465 15.5 30.0000 Briggs & Stratton Industrial engine 480 16 30.0000 Briggs & Stratton Industrial engine 319 8 39.8750 Briggs & Stratton Industrial engine 148 3.5 42.2857 Chainsaw 40.8 2 20.4000 Chainsaw 36 2.2 16.3636 Chainsaw 32.8 1.6 20.5000 Chainsaw 25.6 1.4 18.2857 Marine outboard 1298 70 18.5429 Marine outboard 1298 60 21.6333 Marine outboard 815 50 16.3000 Marine outboard 815 40 20.3750 Marine outboard 597 30 19.9000 Marine outboard 597 25 23.8800 Marine outboard 302 15 20.1333 Marine outboard 302 9.9 30.5051 Marine outboard 105 6 17.5000 Jet Ski PWC 1986 Kawasaki X-2 635 52 6000 12.2115 Jet Ski PWC 2007 Kawasaki 250X 1194 250 4.7760 Jet Ski PWC 2013 Sea-Doo GTS 130 1494 130 11.4923 Jet Ski PWC 2015 Kawasaki 1100PWC 1071 120 8.9250 Jet Ski PWC 2015 Kawasaki 310LX 1498 310 4.8323 Ford Fiesta 1.1L 8 valve 1100 50 22.0000 Ford Fiesta 1.25L 16 valve 1250 75 16.6667 Ford Escort 1.4L 8 valve 1400 74 18.9189 Ford Escort 1.6L 8V 1600 90 17.7778 Ford Escort 1.6L 16V 1600 105 15.2381 Ford Escort 1.6L RS TURBO 1600 130 12.3077 Ford Escort 1.8L 8V 1800 105 17.1429 Ford Escort 1.8L 16V 1800 115 15.6522 Ford Escort 1.8L 16V XR3 1800 130 13.8462 Ford Escort 2.0L 16V RS 2000 150 13.3333 Ford Escort 2.0L COSWORTH 2000 225 8.8889 Ford Escort 2.0L RS 2000 149 13.4228 Ford pickup/utility 4600 175 26.2857 Ford pickup/utility 4200 191 21.9895 Ford pickup/utility 2000 130 15.3846 Ford pickup/utility 5400 255 21.1765 Ford pickup/utility 4600 232 19.8276 Ford pickup/utility 4000 210 19.0476 Ford pickup/utility 4000 203 19.7044 Ford pickup/utility 4200 202 20.7921 Ford pickup/utility 5400 260 20.7692 Ford Mondeo 2000 150 13.3333 Ford Mustang 3800 193 19.6891 Ford saloon 3000 155 19.3548 Ford Thunderbird 3900 252 15.4762 Ford saloon 2000 130 15.3846 Austin A35 and Morris Minor 948 37 4800 25.6216 MGB 1798 95 5400 18.9263 Austin Healey 3000 Mk3 1963 2912 150 19.4133 Jaguar 3.4 3442 180 5300 19.1222 Mitsubishi Carisma Classic 1300 82 15.8537 Mitsubishi Carisma Classic 1400 90 15.5556 Mitsubishi Carisma Classic 1600 110 14.5455 Honda Jazz 1399 83 16.8554 Honda Accord 1600 115 13.9130 Honda Accord 1800 136 13.2353 Honda Accord 2000 147 13.6054 Model aircraft OS glowplug 8.17 1.8 17000 4.5389 Model aircraft OS glowplug 9.95 1.9 16000 5.2368 Model aircraft OS glowplug 1.76 0.27 17000 6.5185 Model aircraft OS glowplug 5.23 1.2 22000 4.3583 Model aircraft Typhoon - diesel 2.47 0.82 27200 3.0122 Tractor pulling Allison V12 28000 2200 12.7273 Allison V12 in P38 aircraft 28000 1400 4000 20.0000 Rolls Royce Merlin Mk.II 27000 1030 26.2136 Rolls Royce Merlin / Packard V-1650 27000 1695 15.9292 RR Griffon 58 - Shackleton aircraft 37000 2455 15.0713 Pratt & Whitney Wasp Major, radial 28cyl 71500 3500 2800 20.4286 P&W Wasp Major - race tuned 71500 4500 15.8889
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