Mr. Gasket 8703 Hot Rod Calculator - Manual (Page 12)

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Performance Keys
 Tire Ratio –
Calculates Tire Ratio, effective drive
ratio ( d-eff), equivalent drive ratio (d-eQV), actu-
al speed ( SPD►A) and indicated (gauge) speed
( G►SPD) given entered old Tire Diameter, new
Tire Diameter, Gear Ratio and speed.
 Old Tire Diameter (Old Tire Dia) –
Enters the cur-
rent tire size for solving Tire Ratio problems.
Unitless entries assumed Inches in US mode, mm
in Metric mode.
 gear Ratio –
Enters or calculates overall Gear
Ratio. Calculates overall Gear Ratio, as well as
gear ratios adjusted for manual ( Gr-M) and auto-
matic ( Gr-a) transmissions given entered RPM,
speed and new Tire Diameter.
 new Tire Diameter (new Tire Dia) –
Enters or cal-
culates new tire size. Unitless entries assumed
Inches in US mode, mm in Metric mode. Calculates
tire size given entered speed, Gear Ratio and RPM.
 engine Displacement –
Enters or calculates
Engine Displacement. Unitless entries assumed
cubic Inches in US mode, Liters in Metric mode.
Calculates Engine Displacement and cylinder vol-
ume given entered Bore diameter, Stroke length
and number of Cylinders.
 number of Cylinders (# Cylinders) –
Enters the
number of Cylinders in an engine. Default is 8 cyl-
inders.
 Compression Ratio –
Enters or calculates the
Compression Ratio. Calculates Compression Ratio
given entered Bore diameter, Stroke length, Gasket
Bore diameter, Gasket Thickness, Deck Height,
Dome volume and Chamber volume.
(cont'd)
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