Valve Timing
TIMING IN °CA AT 2 MM VALVE LIFTCam Codes 18, 36(2), 19(1), 37(1)(2)
Intake Valve Opens 11.5 ° (12 °) ATDC
Intake Valve Closes 17.0 ° ABDC
Exhaust Valve Opens 18.5 ° BBDC
Exhaust Valve Closes 13.5 ° BTDC
Cam Codes 22(3), 42(4), 49(5), 23(1), 43(1,4), 50(1,5)
Intake Valve Opens 11.5 ° (12 °) ATDC
Intake Valve Closes 19.5 ° ABDC
Exhaust Valve Opens 21.5 ° BBDC
Exhaust Valve Closes 13.5 ° BTDC
Cam Codes 21(1)
Intake Valve Opens 16 ° (16.5 °) ATDC
Intake Valve Closes 0.5 ° ABDC
Exhaust Valve Opens 19 ° BBDC
Exhaust Valve Closes 14.5 ° BTDC
Cam Codes 30(3), 44(4), 56(5), 31(1,3), 45(1,4), 57(1,5)
Intake Valve Opens 6.5 ° (7.0 °) ATDC
Intake Valve Closes 14 ° ABDC
Exhaust Valve Opens 26.5 ° BBDC
Exhaust Valve Closes 18.5 ° BTDC
Cam Codes 53(6), 54(1,6)
Intake Valve Opens 16.5 ° (17.0 °) ATDC
Intake Valve Closes 24 ° ABDC
Exhaust Valve Opens 21.5 ° BBDC
Exhaust Valve Closes 13.5 ° BTDC
(1) Repair camshaft with 0.5 mm larger bearing diameter.
(2) USA 1986.
(3) Installed since May 1986 (M7 thread) for mounting camshaft gear.
(4) Camshaft tin-coated, cam 1 mm wider, standard as from October 1986.
(5) Chilled cast camshaft, as from February 1989 (follower mounting 20 mm).
(6) 103.984 as from March 1989 (follower mounting 20 mm).
NOTE: Settings for used timing chains in parentheses.