Engine Dimension Measurement; Cylinder Head Warpage; Cylinder Taper; Cylinder Out Of Round - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

Subsection 05 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
ENGINE DIMENSION
MEASUREMENT
This section covers all engine types.

CYLINDER HEAD WARPAGE

ENGINE TYPE
All
Check gasketed surface of the cylinder head with
a straightedge and a feeler gauge.

CYLINDER TAPER

ENGINE TYPE
All
Compare cylinder diameter 16 mm (5/8 in) from
top of cylinder to just below its intake port area.
If the difference exceeds the specified dimension
the cylinder should be rebored and honed or
should be replaced.
NOTE: Be sure to restore the chamfer around all
cylinder sleeve port openings.
1. Below the intake port
A. 16 mm (5/8 in) from top
MMR2004-114_04_05A.FM
MAXIMUM
0.05 mm (.002 in) per
50 mm (2 in) of surface
0.5 mm (.020 in) for total
length of cylinder head
MAXIMUM
0.10 mm (.004 in)

CYLINDER OUT OF ROUND

ENGINE TYPE
All
Measuring 16 mm (5/8 in) from top of cylinder with
a cylinder gauge, check if the cylinder out of round
is more than the specified dimension. If larger, cyl-
inder should be rebored and honed or should be
replaced.
NOTE: Be sure to restore the chamfer around all
cylinder sleeve port openings.
1. Piston pin position
2. Measures to be compared
A. 16 mm (5/8 in)
COMBUSTION CHAMBER
VOLUME MEASUREMENT
The combustion chamber volume is the region in
the cylinder head above the piston at Top Dead
Center. It is measured with the cylinder head in-
stalled on the engine.
1. Combustion chamber
Section 04 ENGINE
MAXIMUM
0.08 mm (.003 in)
04-05-5