Lotus 1972 EUROPA, Workshop Manual

Page: 12 / 21

---------------------------------------------------------------------------------------- Section Updated: 2/5/2009 6:53 AM at http://www.lotus-europa.com ----------------------------------------------------------------------------------------
11
Crankshaft
Diameter - Main journals 2.158 in. (54.8 mm.)
- Crankpin 1.890 in. (48 mm.)
End float - Dimension .002/.009 in. (.05/.23 mm.)
- Controlled by Thrust washers on centre main bearing
Bearings - Number 5
- Type Aluminium lead, thin wall
- Running clearance .0015/.0031 in. (.038/.079 mm.)
Maximum undersize for regrind .02 in, (.50 mm.)
Connecting Rod
Type 'H' section
Material Steel forging
Distance between centres 5.363 in. (13.62 cm.)
Bearings - Type Aluminium Lead, thin wall
- Running clearance .0007/.0028 in. (.017/.058 mm.) [1]
- Side clearance .012/.022 in. (.310/.572 mm.)
Gudgeon (Piston) Pin
Location Force fit in connecting rod
Diameter .787 in. (20 ram.)
Class of fit - In piston .0001/.0003 in. (.003/.009 mm.)
- In connecting rod .0007/.0015 in. (.020/.041 mm.)
Piston
Type
Solid skirt
Material Aluminium
No. of rings - Compression 2
- Oil control 1
Piston clearance in cylinder liner Matched piston and liner sets
Piston rings:
Gap in liner (fitted) -Compression .009/.015 in. (.25/.40mm.)
- Oil control .009/.015 in. (.25/.40 mm.)
Groove clearance - Compression .0019/.0029 in. (.05/.075 mm.)
- Oil control .0005/.0023 in. (.015/.06 mm.)
Width - Compression .078 in. (2 mm.)
- Oil control .157 in. (4 mm.)