Measuring A Compression Ratio - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

Section 04
ENGINE PREPARATlON
The solder should be inserted above and in line with the wrist pin.
1. Solder
2. Flattened area
CAUTION : Do not use acid core solder; the acid can damage the piston and cylinder.
MEASURING A COMPRESSION RATlO
The minimum combustion chamber volume is
is measured with the head installed on the engine.
1.
Remove one spark
2. Obtain a C.C. graduated burette, capacity 0-50 cc and fill with automatic transmission fluid.
o
NOTE : Suggested burette, "Canlab no. 8-000/T, or equivalent.
F01D6MS
3.
Inject the burette content through the spark plug hole until mixture touches the two bottom
4. Read the burette scale and obtain the number of cc injected into cylinder. (example : 21.5 cc)
5. Record the volume which we will note as Vz.
04-18
plug and place piston at T.D.C.
the region in the head above the piston at T.D.C. It