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  • Cubic Inch Displacement:
    CID = bore x bore x stroke x 0.7854 x # of cylinders
  • Horsepower = (RPM x torque)/5,252
  • Torque = (5,252 x HP)/RPM
  • Valve Area = valve diameter x valve diameter x 0.7854
  • Rod Ratio = rod length/crank stroke length
  • Average Piston Speed = crank stroke x RPM/6
  • Rear Gear Ratio = (RPM at finish line x tire diameter)/(MPH x 336)
  • Volume (cc's) of Deck Clearance = bore x bore x 12.87 x depth of deck clearance
  • Volume (cc's) of Head Gasket = bore x bore x 12.87 x thickness of head gasket

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  • Compression Ratio = (comb chamber cc's + gasket cc's +deck CI cc's + (displacement x *2.0483)
                                                        comb chamber cc's + gasket cc's + deck CI cc's
               
                                            * = 2.0483 for 8-cyl    * = 2.7311 for 6-cyl    * = 4.0967 for 4-cyl

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  • Circumference = π x diameter
  • Area of Circle = π x radius x radius
  • Volume of a Cylinder = π x radius x radius x height

                    π = 3.1416

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Weights:

Oil1 gallon = 7.0 pounds1 quart = 1.75 pounds
Gas1 gallon = 6.2 pounds1 quart = 1.55 pounds
Water1 gallon = 8.4 pounds1 quart = 2.10 pounds

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Metric and Standard Conversion

The metric system is a decimal system of measurements used in scientific work for measuring length, weight, and volume. These basic units are modified with prefixes to express the units as larger or smaller quantities. Some of the common prefixes are:

Kilo: one thousand (1000)
Deci: one-tenth (0.1)
Centi: one-hundredth (0.01)
Milli: one-thousandth (0.001)
Micro: one-millionth (0.000001)

Length:

        1 Kilometer (km) = 1,000 meters = 3,280.83 feet = .6215 miles
        1 meter (m) = 100 centimeters = 39.37 inches = 1.09 yards
        1 decimeter (dm) = 3.937 inches
        1 centimeter (cm) = .3937 inches

        1 mile = 1.609 kilometers
        1 yard = .91 meters
        1 inch = 2.54 centimeters
        1 inch = 25.4 millimeters

Mass:

        1 kilogram (KG) = 1,000 grams (g) = 2.205 pounds
        1 pound = 453.6 grams
        1 gram = 1,000 milligrams (mg)
        kilograms x 2.20 = pounds
        1 ounce = 28.35 grams
        pounds / 2.20 = kilograms

Volume:

        1 liter (l) = 1,000 cubic centimeters (cc) = 61.025 cubic inches
        1 cubic inch = 16.387 cubic centimeters

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BOLTS AND TORQUE SPECS

 

U.S. BOLT GRADES

sae2 boltsae5 boltsae7 boltsae8 bolt
SAE 2SAE 5SAE 7SAE 8
 2578SOCKET HEAD CAP SCREW
I.D. MarksNo markings3 lines5 lines6 linesAllen head
MaterialLow carbonMedium-carbon, temperedMedium-carbon,
quenched & tempered
Medium-carbon, quenched & temperedHigh-carbon, quenched & tempered
Tensile strength (Minimum)74,000 psi120,000 psi133,000 psi150,000 psi160,000 psi

 

U.S. BOLT TORQUE SPECIFICATIONS
Torque in pounds-foot

  22557788Socket head cap screwSocket head cap screw
Bolt Dia.Thread per inchDryOiledDry OiledDryOiledDryOiledDry Oiled
1/42043861081291411
1/4286410712914101613
5/1618971713211625182923
5/16241291914241829203326
3/81616123023403045354939
3/82422163525453550405444
7/161424175035604570557661
7/162034265540705080608568
1/2133831755595701108011390
1/220524290651008012090126100
9/1612524211080135100150110163130
9/1618715712090150110170130181144
5/8119878150110140190220170230184
5/81811593180130210160240180255204
3/410157121260200320240380280400320
3/416180133300220360280420320440350
7/89210160430320520400600460640510
7/814230177470360580440660500700560
18320240640480800600900680980780
1123502657105308606669907401060845

 

 

 

 

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