Mr. Gasket Hot Rod Calc User manual
Designed in the United States of America.
Printed in China. 3/10
10601 Memphis Ave. #12, Cleveland, OH 44144 U.S.A.
www.mr-gasket.com
UG8703E-B
Model 8703
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Designing and building the Hot Rod Calc™
could not have been done without the support
and input from individuals knowledgeable in all
aspects of motorsports racing, especially those
with deep understanding of the relationship
between weather conditions and engine
performance.
Calculated Industries gratefully acknowledges
Patrick Hale (Drag Racing Pro) and Marko
Glush (independent engine builder and bracket
racer) for their generous time and expertise
during the development of this calculator.
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Ho t Ro d Ca l C ™
The Hot Rod Calc™ Street and Strip Performance Calculator is
Hot Rod Calc
Hot Rod Calc also
Hot Rod Calc
Helps you at the track
Helps you improve engine performance
Answer hundreds of car and truck "What If I..."
questions
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TABLE OF CONTENTS
GETTING STARTED
5
6
6
10
13
1
1
1
15
15
15
15
16
16
17
17
1
USING THE HOT ROD CALC 1
19
19
19
20
20
21
22
22
22
2
2
27
2
Hot Rod Calc2
29
30
33
35
Based on HP and ET35
Based on HP and Speed35
Based on HP and Vehicle Weight36
Based on Speed and Vehicle Weight37
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Based on Vehicle Weight
and ET37
Based on Vehicle Weight,
ET and Weather Conditions3
39
39
1
Based on Gear Ratio, RPM and Tire Diameter 1
Based on Gear Ratio, Speed and Tire Diameter2
Based on RPM, Speed and Tire Diameter2
Based on RPM, Speed and Gear Ratio3
Based on RPM and Engine Displacement5
Based on RPM, Engine Displacement and
VolumetricEfciency6
6
Based on RPM, Engine Displacement and
Carburetor Size7
7
Based on Torque and RPM 7
Based on HP and RPM
9
50
52
53
Based on RPM and Stroke53
Based on Piston Speed and Stroke5
55
Based on Bore and Stroke55
Based on Engine Displacement and Stroke56
Based on Engine Displacement and Bore57
APPENDIX A – BODY STYLE AND DRAG COEFFICIENTS5
APPENDIX B – REFERENCE CHARTS59
59
61
APPENDIX C – DEFAULT SETTINGS63
APPENDIX D – PREFERENCE SETTINGS63
APPENDIX E – CARE INSTRUCTIONS65
APPENDIX F – ACCURACY/ERRORS, AUTO SHUT-OFF,
BATTERIES, RESET65
65
66
66
66
REPAIR AND RETURN67
WARRANTY67
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GETTING STARTED
KEY DEFINITIONS
Basic Function Keys
On/Clear Key –
Off –
–
Convert –
Recall –
Memory Clear (M-R/C) –
Accumulative Memory –
M- –
Percentage –
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Dimensional Function Keys
Millimeters –
Meters (m) –
Inch –
Feet –
Pounds (lbs) –
Fluid Ounces (fl oz) –
Celcius (°C) –
Fahrenheit (°F) –
Gallons (gal) –
(cont'd)
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(cont'd)
Liters (liters) –
Milliliters (mL) –
Pound-Foot (lb-ft) –
Cubic Centimeters (cc)
Newton-meters (N-m)
Kilograms (kg)
Miscellaneous Function Keys
Square Root (
) –
Reciprocal (1/x) –
0.125
Clear All
Pi – π
Change Sign (+/–)
Preference Settings (Prefs)
Preference Settings
ET Prediction Keys
Air Temperature –
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Pressure –
Moisture –
RH%
P-WV
P-SAT
DEW
Wind Speed –
ETc
SPDc
Elevation / Air Density Index –
ADID-ALT
(cont'd)
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(cont'd)
Wind Direction –
Head
180°
0°
Tail
45°
90°
Vehicle Weight –
Frontal Area –
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Elapsed Time –
HPc
Drag Coefficient (Drag Coeff) –
Appendix A
Miles per Hour –
HPc
Kilometers per Hour (km/h) –
as
(cont'd)
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Performance Keys
Tire Ratio –
D-EFFD-EQV
SPD►A
G►SPD)
Old Tire Diameter (Old Tire Dia) –
Gear Ratio –
GR-M
GR-A
New Tire Diameter (New Tire Dia) –
Engine Displacement –
Number of Cylinders (# Cylinders) –
Compression Ratio –
(cont'd)
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Mill Amount –
Piston Speed –
FPM
M/MIN
Mechanical Efficiency (Mech Eff %) –
Carburetor Size –
Volumetric Efficiency –
Bore –
(cont'd)
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Gasket Bore (Gskt Bore) –
Stroke –
Gasket Thickness (Gskt Thickness) –
RPM –
Deck Height –
Torque –
HPc
Dome Volume (Dome Vol) –
(cont'd)
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Horsepower –
HPc
Chamber Volume (Chamber Vol) –
PREFERENCE SETTINGS
Appendix D
KEYSTROKE DISPLAY
(Prefs)
(Functional Result Rounding) F-RND 0.000
F-RND 0.00
F-RND FLOAt
(repeats options) F-RND 0.000
:
(Default Unit Format) US UNItS
(cont'd)
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METRC UNItS
(repeats options) US UNItS
:
(Meter Rounding) METER 0.000 M
METER FLOAt M
(repeats options) METER 0.000 M
ENTERING DIMENSIONS
Distance/Length Dimensions
DIMENSIONS KEYSTROKE
Square and Cubic Dimensions
DIMENSIONS KEYSTROKE
(cont'd)
KEYSTROKE DISPLAY
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CONVERSIONS
Distance/Length Conversions
Enter and convert 1,320 feet to meters.
KEYSTROKE DISPLAY
0.
(
Feet)
1320 F
*(m) 402.336 M
* Repeated presses of
will toggle between meters and millimeters.
Enter and convert 4.5 inches to millimeters.
KEYSTROKE DISPLAY
0.
4.5 IN
*114.3 MM
* Repeated presses of
will toggle between meters and millimeters.
Speed Conversions
Enter and convert 65 miles per hour to kilometers per hour.
KEYSTROKE DISPLAY
0.
SPEED
65. MPH
(
km/h)
SPEED
104.60736 KM/H
Engine Displacement Conversions
Enter and convert 450 cubic inches (CID) to liters.
KEYSTROKE DISPLAY
0.
(cont'd)
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450 CU IN
(liters)
LITER 7.3741788
Enter and convert 5.0 liters to cubic inches (CID).
KEYSTROKE DISPLAY
0.
(
liters)
LITER 5
305.11872 CU IN
Torque Conversions
Enter and convert 42 lb-ft to Newton-meters.
KEYSTROKE DISPLAY
0.
(
lb-ft)
LB-FT 42
(
N-m)
N-M 56.944354
Enter and convert 25 N-m to lb-ft.
KEYSTROKE DISPLAY
0.
(N-m)
N-M 25
(
lb-ft)
LB-FT 18.439054
Weight Conversions
Enter and convert 2,700 pounds to kilograms.
KEYSTROKE DISPLAY
0.
(
lbs)
LBS 2700
(
kg)
KG 1224.6994
(cont'd)
KEYSTROKE DISPLAY
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Volume Conversions
Enter and convert 5.5 gallons to liters.
KEYSTROKE DISPLAY
0.
(
gal)
GAL 5.5
(
liters)
LITER 20.819765
Enter and convert 15.25 liters to gallons.
KEYSTROKE DISPLAY
0.
(liters)
LITER 15.25
(
gal)
GAL 4.0286238
MEMORY OPERATION
FUNCTION KEYSTROKE
(Clear All)
(cont'd)
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Using M+
KEYSTROKE DISPLAY
M+ 355.
M+ 255.
(M-) M- 745.
TOTAL - 135.
AVG - 45.
COUNT 3.
M+ - 135.
USING THE HOT ROD CALC
Note: The built-in Horsepower correction calculations are
based on formulas designed for naturally aspirated gasoline burning engines.
The Hod Rod Calc
Hot Rod Calc’s
IMPORTANT: All examples are based on the default US units
mode, displaying entries and calculations in US units. Also note
that if an attempt is made to find a solution (using the motor,
performance or environmental functions) without having stored
the minimum required values, the calculation will not be per-
formed. Instead, the currently stored value for the selected
function will be displayed (Tire Ratio displays NONE). See Key
Definitions section on page 4 for function requirements.
(cont'd)
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Table of contents
