Discovery II
GENERAL DATA
04-7
Valves
Stem diameter:
⇒
Inlet
8.664 - 8.679 mm (0.3411 - 0.3417 in)
⇒
Exhaust – 4.0 litre up to engine nos. 55D 05677A;
56D 50787A; 97D 05504A
⇒
Exhaust – 4.0 litre from engine nos. 55D 05678A;
56D 50788A; 97D 05505A and all 4.6 litre
8.651 - 8.666 mm (0.3406 - 0.3412 in)
8.641 to 8.656 mm (0.340 to 0.341 in)
Head diameter:
⇒
Inlet
39.75 - 40.00 mm (1.5650 - 1.5748 in)
⇒
Exhaust
34.227 - 34.481 mm (1.3475 - 1.3575 in)
Seat face angle:
⇒
Inlet
46
°
25' - 46
°
00'
⇒
Exhaust
46
°
25' - 46
°
00'
Valve face angle:
⇒
Inlet
45
°
00' - 45
°
30'
⇒
Exhaust
45
°
00' - 45
°
30'
Valve springs
Free length
48.8 mm (1.92 in)
Fitted length
40.93 mm (1.61 in)
