Lotus Elise S1 Service Notes page 12

Lotus Service Notes
Section TDL
Type designation - std
-111S
Configuration & no. of cylinders
Capacity
Bore
Stroke
Valve actuation - std
-111S
Compression ratio
Firing order
Spark plugs
Spark plug gap
Maximum engine speed
Fuel system - std
-111S
Fuel requirement
Max power (88/195/EEC) - std
-111S
Max torque (88/195/EEC) - std
-111S
K16 (18K4F)
K16 (18K4K)
in-line 4
1796 cm
3
(70.71 in
3
)
80.00 mm (3.150 in)
89.30 mm (3.516 in)
Belt driven twin overhead camshafts with
hydraulic tappets
As std. with variable valve control (WC) on
inlet camshaft
10.5:1
1,3,4,2
RC8 PYP or CSP 9652
0.9 ±0.1 mm (0.035 in)
7000 rpm
Multi-point grouped fuel injection with
MEMS 1.9 engine management
Sequential fuel injection with MEMS 2J
engine management
Unleaded 95 RON minimum
88 kW (118 bhp) @ 5,500 rpm
107 kW (143 bhp) @ 7,000 rpm
165 Nm (122 Ibf.ft) @ 3,000 rpm
174 Nm (128 Ibf.ft) @ 4,500 rpm
CYLINDER HEAD
Material
Aluminium alloy
Head face maximum warpage 0.05 mm
Cylinder head height - new 118.95 to 119.05 mm
- reface limit 0.20 mm
Std
Open duration
Inlet valve opens
Inlet valve closes
Exhaust valve opens
Exhaust valve closes
Valve overlap
Valve lift - inlet
- exhaust
111S
Open duration - inlet (variable)
- exhaust
Inlet valve opens
Inlet valve closes
Exhaust valve opens
Exhaust valve closes
Valve overlap (variable)
Valve lift - inlet
- exhaust
244° (at crankshaft)
12° BTDC
52° ABDC
52° BBDC
12° ATDC
24°
8.8 mm
8.8 mm
220° to 295°
252°
0° BTDC at minimum period
40° ABDC at minimum period
51° BBDC
21° ATDC
21° to 58°
9.5 mm
9.2 mm
Angle of valve seats and faces
Stem diameter - inlet
- exhaust
45°
5.952 - 5.967 mm
5.947 - 5.962 mm
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