Dear Racing Community,
I want to learn more about a whistler testing device for engines. I was told by a few individuals that it can be used to check engine displacement and compression ratio by simply removing the spark plug and connecting the device.
I'm not sure if there are different types of whistler devices, as a few unexpected things came up when we tried to get the SCCA to use a whistler.
1) They said it was too windy on the day we wanted them to use it. This doesn't exactly make sense to me, but nevertheless, the option of using the whistler was disregarded at the time of the tech.
2) On another weekend, I was told that the whistler can only check compression ratio, and not displacement. This person also claims the whistler requires an inputted displacement number to calculate compression.
Obviously, this wouldn't be good in the case that the engine has a different displacement than what is legally allowed - then the compression ratio would be measured incorrectly. Also, I wouldn't be able to check for legal displacement - which is one of the capabilities that I originally thought the whistler was good for...
If you know the answers to these questions, I would love to hear your input. If you're not really sure, please do not answer - it would make things more confusing.
Thanks in advance,
Jonathan