DIY Knock Sensor

While waiting for the new motor to arrive, I was bored and decided to build a knock sensor.

Anyone who is going to tune their own motor should AT THE VERY LEAST have something like this to monitor knock with while on the dyno…

Parts I picked up from my local hardware store
3/4" copper pipe
a couple brass fittings
hearing protection headphones
a small funnel
some 1/2" tubing

The photos tell the story…

Does that really work?

It reminds me of the engine guy in Das Boot,… Another great movie for the movie thread.

You need to get out more dude :wink:


Better than my one attached to the bulkhead…

yeah does work well, a less DIY one is what plenty of car manufacturers use.