Detonation detection. Cheap and simple.

[hottscennessey]

I'm sharing one of my tools I use to detect detonation when tuning various motors.

I'm testing waters to see if this is something that members of the forum would be interested in. I use a factory Toyota knock sensor, wire it to a 3.5mm headphone jack, and use it to record dyno/street WOT pulls onto my computer in order to hear detonation over the exhaust.

I'm more than willing to supply this as a complete solution, partial solution (IE: you supply the knock sensor) or a DIY project.

At this point I'm basically looking for some feedback. Other detonation detection products are either home made stethoscopes or cost $350+. Is this anything the community could use?

[video=youtube;EXhwS17d3-A]http://www.youtube.com/watch?v=EXhwS17d3-A[/video]

 

[destrux]

Cool idea. I wonder if a low voltage LED bar display could be attached in place of the headphones, turn it into a permanent gauge in the car maybe.

 

[xzeror]

thats very cool.

 

[Poodles]

Very cool. Curious how it compares to the other "electronic ears" they make for tuning.

 

[Kevin]

interesting. the gauge idea is also pretty cool

 

[IJ.]

Cool idea. I wonder if a low voltage LED bar display could be attached in place of the headphones, turn it into a permanent gauge in the car maybe.

interesting. the gauge idea is also pretty cool

Already exists "Knock Link" and on my 7M was USELESS due to the amount of background noise in these engines....

Turned the gain down to filter the background garbage and short of an engine explosion where the head leaves a head size hole in the Hood it never came back on... :nono:

 

[Poodles]

Yeah, the human ear can tell differentiate what noise is what. Knock link is a visual indication of "I hear noise."

 

[boostcraver]

Have also seen the techs at the shop where I work use the ChassisEars for the same pupose. Don't know what the retail is on those though...

 

[Canuckrz]

http://oldschool.supracentral.com/htm/ks_mon.htm

Came across this a few weeks ago, looks to be the most promising option though I'm not sure how one could set it up to record on pulls to compare besides just doing it by eye.