Plastic automotive engine
Version one was based on Ford's 2.3-liter Pinto engine and weighed (vs. for its cast iron counterpart). It was designed to produce 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. The engine was never installed in a vehicle.
Dino 206 GT and 246 GT
Later Fiat Dinos also used the 2.4L engine, although significantly fewer were produced with this engine.
Calls for more power were answered with the Dino 246 65° V6 engine, DOHC 2 valves per cylinder 9.0:1 compression ratio, iron block with alloy heads. It produced at 7,600 rpm and at 5,500 rpm of torque, and was available as a fixed-top "GT" coupé or, after 1971, an open Spyder "GTS". A detuned American version had an exhaust air pump, and timing changes which created . The GT had 3X2-barrel 40 DCNF/6 or 40 DCNF/7 Weber carburetors. For the 246 a new version of the Dinoplex ignition was deployed, the more compact Magneti Marelli AEC103A system.