Camshaft timing: Specifications

Version Power Intake open Before t.d.c Intake close After b.d.c. Exhaust open Before t.d.c. Exhaust close After b.d.c. New 500 Until October 1957 13 Hp 19° 50° 50° 19° New 500 October ’57 until March ’58 15 Hp 20° 50° 50° 20° New 500 March ’58 onwards 16,5Hp 9° 70° 50° 19° 500 sport 21 Hp 25° 51° 64° 12° 500 D, 500 SW Giardiniera And Autobianchi 17.5Hp 25° 51° 64° 12° 500 F and 500L 18 Hp 25° 51° 64° 12° 500R 18 Hp 26° 57° 66° 17° Continue reading Camshaft timing: Specifications

Spark Plugs for 500s

There are many spark plug manufactures around and all have different codes for their spark plugs, please see below a list of the most common ones for standard fitment 500 original engine (479cc & 499cc): Original plugs Marelli CW 225 N or Marelli 6N; Champion L7 or Champion L 87 Y Alternatives NGK BP6HS or NGK BPR6HS; Bosch W7BC or Bosch WR7BC; Unipart GSP541 126 650cc engines  Original plugs Marelli CW 8 NP; Champion L81 Y Alternatives NGK BP7HS; Bosch W5BC Continue reading Spark Plugs for 500s