Piston, connecting rod and crankshaft.

grabcad

The pars re made to fit EJ-VE Daihatsu Engine, and thus most dimensions are real, but some are estimated with help of blueprints and actual pictures. The piston has 72 mm bore, the cuts on the piston top are designed to have the factory 10:1 compression ratio and to accommodate the factory valves with standard opening times and lifts. The connecting rod is 122 mm long and are symmetric as the factory version. I plan to upload the piston rings and some tuned versions at some later point. :)