Jag hittade en plast motor.
Matti Holtzberg founded Polimotor Research Inc. in 1979. It was based in
Fair Lawn, New Jersey. The company, in cooperation with its suppliers and sponsors, created and raced engines consisting of a large percentage of polymers in the 1980s.
Version OneEdit
Version one was based on Ford's
2.3-liter Pinto engine and weighed 152 pounds (69 kg) (vs. 415 pounds (188 kg) for its
cast iron counterpart). It was designed to produce 318 horsepower (237 kW) at 9200 rpm. It was composed of metal
cylinder sleeves, metal combustion chamber tops, metal piston crowns, bearings, valves and seats, and a stock 2.3L Pinto
crankshaft. Nearly everything else in the engine, including the block, rods and piston skirts, were made of glass reinforced
Polyamide-imide thermoplastic resins manufactured at the time by
Amoco Chemicals Co.
[3][4] The engine was never installed in a vehicle.
Although sources claimed that Ford had been a partner in creating the engine,
[3][5] Holtzberg was later quoted as saying that "Ford was not involved at all".
[4]
Version TwoEdit
Another engine, supposedly based upon the
Cosworth BDA and
YB series engines, weighed 168 pounds (76 kg), half the weight of its metal counterpart.
[4] Plastic parts included the engine block, cam cover, air intake trumpets, intake valve stems, piston skirts and wrist pins, connecting rods, oil scraper piston rings, tappets, valve spring retainers and timing gears.
[6]
The engine was raced over two seasons. It was raced in a
Lola T616 HU04 and competed in the
International Motor Sports Association's (IMSA)
Camel GT Championship in the Camel Lights (Group C2) category in 1984 and 1985. The car earned several top 5 finishes including its best finish of third in class at the 1985
Lime Rock 2 hours.
[6][7]