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Old 04-16-2014, 02:34 AM   #85 (permalink)
freebeard
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If you don't mind occasional explosions, contemplate the Turbonique:

iowahawk: The Real Acme

Quote:
At the mild end of the Turbonique product line were its AP (for "Auxiliary Power") superchargers, so named because they had their own power supply. Unlike regular superchargers (driven by a crank pulley belt) or turbos (driven by exhaust pressure), Turbonique AP superchargers operated independently of the engine and scavenged no power from it. They appeared to be a spiral turbo with a spark plug, and were engaged with a dash-mounted switch - a sort of prehistoric Nitrous setup. When the driver threw the switch, the supercharger unit would receive liquid oxygen for ignition, and then it was fed a rocket fuel named Thermolene -Turbonique's trade name for N-propyl nitrate. The exhaust thrust from combustion would spin a turbine impeller up to 100,000 RPM, ramming the engine with such intense boost that it essentially turned it into a giant two-stroke. Turbonique dyno-tested an AP unit on new Chevy 409 in 1963, increasing horsepower from a stock 405 to 835 -- backing up their advertised guarantee to "double your horsepower" -- although it came with a recommendation not to run the unit for more than 5 minutes and only with forged cranks, pistons and connecting rods.
Emphasis mine, it's worth the read. Also Turbonique News, Videos, Reviews and Gossip - Jalopnik
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