So I'm wondering, has anyone ever managed to get knock sensing to work on an A20? Obviously you would have to use a sensor from another engine and have a way to process the signal; but it would work just the same.
Awhile back I rigged up a home made sensor by RTV-ing an electret microphone (out of an old cell phone head set) into a large crimp on ring terminal. The terminal is bolted to the side of the block and I can listen to the noise with a small mic amplifier and some headphones. I have some idea of what to listen for but I haven't yet heard anything that sounds like spark knock. But then I haven't heard the engine actually ping either that I can tell for sure. My intake manifold makes some odd screeching noises at certain MAP levels and sort of a loud hissing at higher RPMs so it's hard to listen for pinging.
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