 As there was no need for distributor (MPI used ignition module mounted to cylinder head), valvetrain cover (in previous engines unchanged since 1964) could be made narrower, moving accessory belt closer to engine, so engine could be fitted to VW Lupo.Injection system was upgraded, now using two lambda probes and drive-by-wire throttle valve.These modifications allowed to meet Euro 4 emission standards, before production ended in 2003

bore 72mm, stroke 61,2mm

bore 75,5mm, stroke 72mm

bore 75,5mm, stroke 78mm