[VincentVega]

Amazing stuff

Some off PT boat info

3000 gallons of 100-octane aviation gasoline (AVGAS) is enough to last 12 hours or 520 miles with engine speed limited to 2000 rpm. This works out to about 66 gallons of gasoline per hour, per engine at cruising speed of 35 knots. At maximum rpm, achieving 42+ knots, each engine consumes 166 gallons (or 500 gallons for all 3 engines) per hour. (3000 gallons lasts about 6 hours at top speed!) The gasoline is held in four 750 gallon self sealing rubber-lined gas tanks. PT658 had her 2 after gasoline tanks removed, so capacity is cut in half down to only 1500 gallons of gas

Propulsion

3 5M-2500 Packard-Marine V12 Engines.

These engines are 4 stroke, water cooled, 60 degree, V- type with a 6-3/8" bore and 6-1/2" stroke, for a total of 2490 cubic inches of displacement. Each engine has 48 valves, 2 inlet/2 outlet per cylinder. They have a compression ratio of 6.4:1, and are fitted with a gear-driven centrifugal supercharger and intercooler. The engines are installed with a Holley 1685F aircraft-type carburetor, and use aircraft- type dual magneto sparks, with 2 spark plugs per cylinder. The engines develop 1500 Hp at 2500 rpm.Max revolutions is 3000 rpm. Engine weight is 3100 pounds. These engines were designed to burn 100 octane aviation gasoline to achieve nominal power output.