Checking your engine performance on a chassis dyno?

[tnewland]

Jerry
You sound like you know a lot about dynos, do you operate one? If the operator of this particular dyno stated that the max MPH of this dyno had been reached at 150 MPH and the dyno sheets have a large red "MAX SPEED !!!" printed on the front of it what leads you to believe that the max MPH had NOT been reached? Also as an operator are you NOT supposed to monitor basic functions (oil pres, engine temp, etc) of the engine during the test to identify any potential problems during the test? Wouldn't potential problems be displayed on the graph the operator is watching as some sort of inconsistency in the line of the graph? As the operator when is the test finished, after the max horse power has been reached and just as the graph starts to taper downward or are you supposed to continue on until the dyno shuts down irrelevant of what both the customer and the computer monitor are indicating? Is the dyno NOT supposed to be used as a diagnostic tool and a controlled enviroment to safely conduct controlled tests? It sounds lie from what you are telling me that I might as well had gone out on a public street and just mashed the pedal to the floor until I hit whatever speed the engine or car finally stopped at? I hope that you are NOT an operator of a dyno as you appear to be the same type of "operator" that STL Mark is warning about! What is the benefit of using a dyno if for no other reason than a diagnostic tool in a controlled safe enviroment?