Cylinder Head - Lotus Europa Workshop Manual

Cylinder Head

Material
Gasket
Valve timing - Inlet opens
- Inlet closes
- Exhaust opens
- Exhaust closes
Angle of valve seats and faces
Valves:
Head diameter- Inlet - Europa TC
- Exhaust
(All models, all Territories)
Stem diameter - Inlet and Exhaust
Stem clearance in guide
Clearance (cold)
Valve Springs:
Type
Free length - Inner
- Outer
Rate - Inner @ 23.4 mm. (.92 in.)
- Inner@14.7 mm. (.58 in.)
- Outer @ 29.7 mm. (1.17 in.)
- Outer @ 21.1 mm. (.83 in.)
Valve guides:
Length - Inlet
- Exhaust
External diameter
Interference fit (all)
Fitted height above cylinder head
Internal diameter (all) ream after fitting
----------------------------------------------------------------------------------------Section Updated: 6/27/2009 9:01 AM at http://www.lotus-europa.com ----------------------------------------------------------------------------------------
(UK & Export)
- Europa TC
(N. America)
- Europa Special
(All Territories)
- Inlet
- Exhaust
- Inlet
- Exhaust
- Std.
- O/size
Aluminium
Copper/asbestos
26° B.T.D.C.
66° A.B.D.C.
66° B.B.D.C.
26° A.T.D.C.
45°
38.760/38.862 mm. (1.526/1.530 in.)
39.624/39.776 mm. (1.560/1.566 in.)
39.624/39.776 mm. (1.560/1.566 in.)
33.553/33.655 mm. (1.321/1.325 in.)
7.874/7.899 mm. (.310/.311 in.)
.007/.058 mm. (.0003/.0023 in.)
.063/.076 mm. (.0025/.0030 in.)
.127/.177 mm. (.005/.007 in.)
.228/.279 mm. (.009/.011 in.)
Dual
28.70 mm. (1.130 in.)
36.83 mm. (1.450 in.)
5.6kg. (12.41bs.)
15.2kg. (33.51bs.)
20.4 kg. (45.0 lbs.)
49.4 kg. (109 lbs.)
36.608 mm. (1.520 in.)
37.592 mm. (1.480 in.)
12.700/12.713 mm. (.500/.5005 in.)
12.852/12.865 mm. (.5060/.5065 in.)
.0127/.0381 mm. ( .0005/.0015 in.)
8.128 mm. (.320 in.)
7.907/7.932 mm. (.3113/3123 in.)
- 4 –