[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.
The first patent issued was for ignition cables, citing prior art for other non-metallic conductive materials and their ability to reduce RF interference related problems.
The two parts would be extruded together to form the cable and ensure a well bound structure of thousands of individual graphite composite filaments.
[8] The majority of patents are for Polyamide-imide engine components, with the potential for graphite, glass or titanium reinforcement as a composite.
The inventions are claimed to have a superior stiffness-to-weight ratio, be up to 70% lighter than traditional parts and reduce vibration and forces within the engine.
[9][10][11][12][13][14][15][16][17][18] In 1990 Matti Holtzberg founded Composite Castings LLC, based in West Palm Beach, Florida.
[19] In April 2015 the Fraunhofer group in collaboration with the high performance polymer division of Sumitomo Bakelite Co announced their development of a single cylinder research engine with a casing made of injection moulded glass fibre reinforced phenolic resin (55/45 respective composition).
[20] In May 2015 it was reported that the Belgian chemical company Solvay had shown interest in reviving the concept with assistance from Matti Holtzberg.
[21] The engine was planned to be installed in a Norma M-20 chassis and raced at Lime Rock in 2016 and a possible Le Mans entry in 2017.