Mr. Gasket 8703 Hot Rod Calculator - Manual (Page 13)

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 Mill Amount –
Enters a new Compression Ratio
and calculates the amount to cut out of the cylin-
der’s head in order to increase Compression Ratio
given entered Stroke length, old Compression Ratio
and new Compression Ratio.
 Piston Speed –
Enters or calculates an engine’s
Piston Speed. Unitless entries assumed ft/min in
US mode, m/min in Metric mode. Calculates Piston
Speed in feet per minute ( fPM) and meters per
minute ( M/Min) given entered RPM and Stroke
length.
 Mechanical efficiency (Mech eff %) –
Enters the
engine’s Mechanical Efficiency, a numeric value
representing a percentage of the power available
inside the engine’s cylinders that makes its way to
the flywheel (e.g., less friction losses from rings,
pistons, bearing friction, oil pumps, etc.). Default
value is 85%.
 Carburetor Size –
Enters or calculates a
Carburetor Size as a flow rate of cubic feet per min-
ute. Calculates User, Theoretical, Street and Race
Carburetor Sizes given entered Engine
Displacement, RPM and volumetric Efficiency. If
volumetric Efficiency is 100%, User Carburetor
Size is not calculated.
 Volumetric efficiency –
Enters or calculates the
volumetric Efficiency of an engine. Calculates
volumetric Efficiency and Theoretical Carburetor
Size given entered Engine Displacement, RPM and
Carburetor Size.
 Bore –
Enters or calculates Bore diameter. Unitless
entries assumed Inches in US mode, mm in Metric
mode. Calculates Bore diameter given entered
Engine Displacement and Stroke length.
(cont'd)
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