Characteristic
Drive shaft / crankcase axial clearance:
0.1 - 0.5 mm (when cold)
Slot packing system
Shimming system for limiting the compression ratio Rc = 10.5 : 1
DISTANCE "A" IS A PROJECTION OR RECESS VALUE OF THE PISTON TOP FROM THE CYL-
INDER PLANE.
DISTANCE "A" ALLOWS THE THICKNESS OF THE GASKET TO BE DETERMINED THAT HAS TO
BE FITTED TO THE CYLINDER HEAD IN ORDER TO RESTORE THE COMPRESSION RATIO. THE
BASE GASKET MUST BE THICKER, THE MORE THE PLANE FORMED BY THE PISTON TOP
PROTRUDES FROM THE PLANE FORMED BY THE CYLINDER HEAD. ON THE OTHER HAND,
THE MORE THE PISTON TOP IS RECESSED INTO THE CYLINDER TOP PLANE, THE SMALLER
THE GASKET THICKNESS.
BASE GASKET THICKNESS
Name
Measure A Thickness
«A» MEASURE TAKEN - 0.185 - - 0.10 0.4 ± 0.05
Beverly 500 i.e. Characteristics
CHAR - 15
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