Lotus Elise S1 Service Notes page 231

ENGINE
Piston to cylinder liner bore clearance - checking
12M3638
1. Starting with number 1 piston, invert piston and
connecting rod and with word FRONT or arrow
on piston crown tacing towards REAR of
cylinder block, insert piston in cylinder liner.
2. Position piston with bottom of skirl 30 mm from
top of cylinder block.
3. Using feeler gauges, measure and record
clearance between piston and left hand side of
cylinder liner - viewed from front of cylinder
block.
4. Repeat above procedure for remaining pistons.
Clearance in cylinder liner bore: K8 and K16 -1.1
and 1.4
0.015 to 0.045 mm
K16~ 1.6 and 1.8
0.01 to 0.04 mm
Piston rings - refit
~ CAUTION: Ensure that piston rings are
/ ] \ fitted to piston for the cylinder bore in
which they were checked.
1. Fit oil control spring.
2. With 'TOP' or identification markings to top of
piston, use an expander to fit piston rings in
sequence; oil control, 2nd and top
compression.
1 2 M 1 8 1 1
3. Ensure rings are free to rotate, position
compression ring gaps A and B at 120° to
each other and away from thrust side - left
hand side of piston when viewed from front.
Position oil control ring gap C and spring gap D
at 30° on opposite side of gudgeon pin axis.
NOTE: Pistons and connecting rods are
only supplied as an assembly.
4.
9 4 OVERHAUL