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 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°