Thread: knock sensor
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kenikh kenikh is offline
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Join Date: Feb 2005
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Quote:
Originally Posted by hobieboy View Post
I understand that knock sensing system needs to be tuned to recognize knocks?

So a question for those who installed a system - is my understanding correct? If so, how did you tune it the 1st time? Make the engine knock?
You can apparently ballpark the frequency by piston diameter, but the actual variables are numerous and require advanced math to resolve. Here's a start:

Resonant knock frequency (kHz)= 900/(pi x cylinder radius)

http://www.phormula.co.uk/KnockCalculator.aspx
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Old 08-08-2009, 06:57 AM
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