Monday, November 25, 2013
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Labels:
headers,
how,
pipe,
size,
to
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The size of an exhaust header pipe should match the needs of a particular vehicle. You can find the size of a header pipe by performing a simple math equation. To do this you first need to obtain variables to use in the equation. These variables include the engines cubic inch displacement, its maximum revolutions per minute and the outside diameter of the header tube. You can find the variables for the equation by referencing your owners manual or a repair manual for the vehicle.
Instructions
1 Write the equation for calculating pipe header size. This is expressed as L = CID x 1900/RPM x OD.
2 Input the cubic inch displacement of the engine for CID. Input the maximum RPM of the engine into the equation. Input the Outside Diameter of the header tube for OD in the equation.
3 Multiply the CID by 1900 and note the result. Multiply the maximum engine RPM by the OD and note the result. Divide the first result by the second result to obtain the size of the pipe header.
Wednesday, October 16, 2013
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Labels:
belt,
how,
measure,
size,
to,
v
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On their own, v belts (also called vee belts or fan belts) look like large, heavy-duty rubber bands. The name derives from the v-shaped cross-section that sits in the groove of a wheel in a pulley system (the belt sits deeper as its workload increases in weight). V-belts are essential components in many auto parts such as auto-steering columns, water pumps, air conditioners and other systems that require little to moderate amounts of force. V-belts come in a wide range of sizes and proper measuring will determine the appropriate replacement part.
Instructions
1 To measure a v-belt that is still on the machine, unwind a length of string or rope and wrap it around the length of the belt surrounding the pulley.
2 When the string wraps around the entire circumference of the belt, use a marker to clearly mark the end as it meets the beginning portion. This allows for less room for measuring errors later on.
3 Align the string with a tape measure across a flat surface, pulling tightly on the string so that it runs smoothly across the length of the tape.
4 Read the number on the tape measure to determine the size of your v-belt. Subtract 2 inches from that number to determine the belts inner circumference.
