Knock sensors.

[flyinlow]

Every vehicle in my garage has knock sensors except the Chargers and the El Camino.  They feel cheated.

Has anyone installed an aftermarket detection system  on an older car?

[A383Wing]

GM has a crude ESC (Electronic Spark Control) system in the late 70's....was a bad system all around. Never did work like  they thought is should.

Would be a lot of trouble & adding of spark control processor to retard the timing if a knock was felt by a sensor.

I remember one vehicle had a slight bearing knock and it kept retarding the timing to where it would not drive on a normal level road

Not worth the trouble & money to invest in one.....my opinion

[flyinlow]

Yea, I keep trying to drag the Chargers kicking and screaming into the 21st. century.  

I thought about using an ignition box that had a retard input for NOS or boost. If it mistook normal noise for detonation that would suck.

[mhinders]

It's interesting stuff, but may require some tinkering to work properly. You could simply trigger a warning light to begin with, and later, if needed, take the signal to a computer, that's probably what I'm going to do. 

Here is an example:
http://www.extraefi.co.uk/knock.htm

[justcruisin]

I bought a kit  that uses a Bosch knock sensor. It converts the knock signal to a 0-1 volt signal which you can hook up to a LED volt meter for a visual display. I never put it together, I decided that regular plug inspection combined with an O2 wide band works best. Too many bells and whistles can make you paranoid.