Grand Caravan FWD V6-229 3.8L VIN L MFI (1997)
Valve: Specifications
Intake Valve:
Stem Diameter ............................................................................................................................................................................. 7.935 mm (0.3124 inch)
Face Angle .............................................................................................................................................................................................................. 44 1/2°
Margin ........................................................................................................................................................................................... 0.794 mm (0.031 inch)
Head Diameter ................................................................................................................................................................................... 45.5 mm (1.79 inch)
Length .......................................................................................................................................................................................... 125.38 mm (4.936 inch)
Lift (zero lash) ............................................................................................................................................................................... 10.16 mm (0.400 inch)
Minimum Valve Length After Grinding Tip .............................................................................................................................. 124.892 mm (4.916 inch)
Exhaust Valve:
Stem Diameter ............................................................................................................................................................................. 7.906 mm (0.3112 inch)
Face Angle .............................................................................................................................................................................................................. 44 1/2°
Margin ......................................................................................................................................................................................... 1.191 mm (0.0469 inch)
Head Diameter ................................................................................................................................................................................. 37.5 mm (1.476 inch)
Length .......................................................................................................................................................................................... 126.00 mm (4.964 inch)
Lift (zero lash) ............................................................................................................................................................................... 10.16 mm (0.400 inch)
Minimum Valve Length After Grinding Tip .............................................................................................................................. 125.512 mm (4.941 inch)
Valve Timing:
Intake Opens ....................................................................................................................................................................................................... 2° BTDC
Intake Closes .................................................................................................................................................................................................... 58° ABDC
Exhaust Opens .................................................................................................................................................................................................. 48° BBDC
Exhaust Closes .................................................................................................................................................................................................. 12° ATDC
Valve Overlap ............................................................................................................................................................................................................... 14°
Intake Valve Duration ................................................................................................................................................................................................ 240°
Exhaust Valve Duration .............................................................................................................................................................................................. 240°