Lotus Elise Service Notes page 236

ENGINE
Valve springs
K8 engines
Free length
Fitted length
Load - valve closed
Load - valve open
46.2 mm
37.0 mm
255 ± 12 N
535 ± 20 N
K16 Non VVC engines
Free length
Fitted length
Load - valve closed . . .
Load - valve open
50.0 mm
37.0 mm
250 ± 12 N
450 ±18 Nat 28.8 mm
K16 VVC engines
Free length 47.6 mm
Fitted length 37.0 mm
Load - valve closed 2 1 0 ± 1 3 N
Load - valve open 440 ± 22 N
Valves
K8 engines
Valve stem diameter:
Inlet
Exhaust
Valve guides:
Inside diameter
Valve stem to guide clearance:
Inlet
- Service limit
Exhaust
- Service limit
Valve stem fitted height:
New
- Service limit
6.960 to 6.975 mm
6.952 to 6.967 mm
7.000 to 7.025 mm
0.025 to 0.065 mm
0.07 mm
0.033 to 0.073 mm
0.11 mm
38.95 to 40.81 mm
41.06 mm
K16 engines
Valve stem diameter:
Inlet
Exhaust
Valve guides:
Inside diameter
Valve stem to guide clearance:
Inlet
- Service limit
Exhaust
- Sen/ice limit
Valve stem fitted height:
New
- Sen/ice limit
5.952 to 5.967 mm
5.947 to 5.962 mm
6.000 to 6.025 mm
0.033 to 0.063 mm
0.07 mm
0.038 to 0.078 mm
0.11 mm
38.93 to 39.84 mm
40.10 mm
2
DATA, TORQUE & TOOLS