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What is Sim Testing and How Does it Differ from Dyno Testing? Last Updated: 07/18/2014 |
Sim tested (or simulation testing) - Is a test performed by all manufacturers of rebuilt engines but is often referred to incorrectly as Dyno testing. Sim testing is the process of using a machine to spin the engine at roughly 750 RPMs. This allows us to test for compression, proper oil pressure and any noises. It also allows the engine lifters to be pumped up thus aiding in eliminating any start up tapping. The engine is not under its own fire or running on fuel at this point. The reasons it is done in this manner, as opposed to a true Dyno test, are as follows:
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