Mr. Gasket 8703 Hot Rod Calculator - Manual (Page 34)

32 —
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KeysTroKe disPlay
6. Display the entered MSA HP, corrected HP and the calculat-
ed Horsepower correction factor (HPc):
 HP
Msa
411.
 HP 341.92
 *
HPc 1.202
* Repeated presses of  will toggle through the inputs and outputs,
starting with the entered absolute Pressure.
—
do noT Clear CalCUlaTor —
note: Recall from the key definitions for Mechanical Efficiency (ME%)
that ME% is a numeric value representing a percentage of the power
available inside the engine’s cylinders that makes its way to the fly-
wheel (e.g., friction losses from rings, pistons, bearing friction, oil
pumps, etc.). The default value is 85%, which is a fairly acceptable
value in practice. ME% is a variable in calculating the HPc, and can be
changed as in the following keystroke example.
KeysTroKe disPlay
7. Change the Mechanical Efficiency value from 85% to 80%
and see the change to HPc:

(Mech Eff %)
M-eff 80.
%
 HP
M sa
411.
 HP 339.44
 HPc 1.211
Notice that by changing the ME% from 85% to 80% (reducing the
engine’s Mechanical Efficiency), the corrected HP was reduced, where-
as the HPc was increased.
(cont'd)
UG8703E-B-inside.indd 32 3/3/2010 3:03:58 PM