Posts Tagged “engine testing”

There is nothing magic about 28″ water. Famed engine builder Smokey Yunick picked this pressure (about 1 psi) many years ago (probably in the 1960s) as what he thought was reasonable, and it stuck. It is now the industry standard.
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An engine dynamometer is used to measure the engine’s power. Dyno tests can be done different ways, but the most common method in the racing world is a sweep test. A sweep test is where you slowly (or quickly) accelerate (or decelerate) through the RPM range with the engine at full power. This must be done somewhat smoothly and slowly, taking about 5 to 10 seconds for good accuracy.

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If you have an old Dyno with analog gauges I’m sure you know that newer Dynos are much more accurate, repeatable, and easy to operate. Read the rest of this entry »

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