detonation can

[jackerman]

So i made this det can from a listen up hearing aid off of dsmtuner forum and was curious of the best place to put it on the 8 valve motor. I was thinking it should go somewhere close to cylinder 4. Any answers will be helpful thanks

[jackerman]

Nobody has ever used on of these to listen for knock

[acannell]

Nobody has ever used on of these to listen for knock

I've used an electronic amp with headphones connected to our knock sensor. Its hard to say if it worked well or not because I never heard anything that sounded like knock, and the car never broken pistons out of the blue (it did..but for other reasons)

http://www.turbododge.com/forums/f4/...ing-setup.html

[jackerman]

Nice thats the same idea. I made it just wanted to know the best location to put it at. I have heard that you will hear knock before the knock sensor with this. I gues ill put it on the knock sensor first

[csxtra]

Nobody has ever used on of these to listen for knock

Not True, DJ found the idea of using a Wideband Knock Sensor from a VW to make an electronic Det Can, and it worked when I tried it on my CSX.

See Page 2 of the following thread for more information:
http://www.turbo-mopar.com/forums/sh...ge-idea!/page2

To answer the original question, I mounted mine on the intake manifold, using one of the fuel rail mounting bolts between cylinders 3 and 4.

[ShelGame]

I have the same VW knock sensor hooked to a Radio Shack microphone amplifier. Haven't used it at the track yet, but I can hear all of the engine sounds with it idling. I took it to the track once, but it turns out that the big headpone thing in the bottom pic doesn't come close to fitting under my helmet. I'll use earbuds next time.

I put the VW knock sensor on a stud on the T-Stat housing.

[jackerman]

This is good info thanks. The vw knock sensor is that something you can get at a parts store. I use mine with head phones id post pics soon.

[ShadowFromHell]

Instead of a amp could you plug that into a radio that has a mp3 player input?

[jackerman]

Im not sure if you can hook it into the radio but damn you can hear everything. I hooked it to the intake on a fuel rail bolt. All noises from pvc to injecters valves everything its awesome. Glad i did it, im going to place it on the t stat to see if its any better and will def hear knock if it happens. Very happy with it

[Force Fed Mopar]

So what all exactly is need for either of these setup? Just the sensor and a 3.5mm headphone/auxiliary cable?

[csxtra]

So what all exactly is need for either of these setup? Just the sensor and a 3.5mm headphone/auxiliary cable?

For the VW sensor setup, there are a few different sensors, some with cables attached, some without. If you get one with a cable attached, you could just cut the connector off and splice to the 3.5mm stereo headphone/aux cable. If you can only find the sensors without the cable (or if you want to retain the factory plug on the cabled sensor), you will need the matching connector, which you can then splice the headphone/aux cable to that.

The easiest way is to go yarding and find 90 through 99 VW Golfs or Jettas with the 1.8L engine and pull the sensor and cut the connector that goes with it. And you may need to wire in a resistor or potentiometer if the signal is too strong for what you are using to amplify it.

The part number for the sensor with the cable attached is Bosch 0261231036, but I don't have a part number for the harness connector and pigtail.

[Force Fed Mopar]

What would you use to amplify it? Could I plug it into the 3.5 aux jack in my Sony head unit and hear through that?

[jackerman]

Yes you can plug it into the your head unit which sounds like a nice idea. I just used the listen up from harbor freight for 8 buck 24 gauge speaker wire from radio shack 6 bucks and alligator clamp big enough to hot glue the speaker to. It was really easy just take the listen up apart desolder the speaker and wires solder the speaker wires to the unit and speaker. Hot glue it all for protection put it together and boom made for less the 20 bucks as im cheap but it works. Lots of dsm and honda guys tune with this

[ShadowFromHell]

Im going to build one of these. I think im going to make it so it could easily be swapped from car to car.

[jackerman]

Mine is un clip it walk over to another vehicle clip it on and go

[RattFink]

I recently went on kind of an "insider" tour of the Roush Engineering engine dyno facilities in Detroit Mi. Imagine rooms of engine dynos with engines hooked up to some very high tech equipment. Anyway, on every engine was a copper tube bolted to the cylinder head, the tube ran outside the room to the control panel where a styrofoam cup was jammed over the end of it... The techs running these dynos swear by this method of listening to detonation, they say they can hear it before all this super expensive equipment can pick it up. This thread reminded me of that, sometimes you just don't need anything too high tech!

[jackerman]

Thats exactly what was told to me buy a guy at atco. He showed it to me then i started googling det cans. I havent been able to do any tuning yet because of calipers failing. This weekend ill get started and keep posting on how well it does

[A.J.]

I made one for my 2.4 using the VW sensor and plugged it into the headphone jack in my stereo. At the time I had my knock sensor for the SMEC screwed in the intake and put the VW sensor in the stock knock sensor port in the 2.4 block.

[Force Fed Mopar]

I made one for my 2.4 using the VW sensor and plugged it into the headphone jack in my stereo. At the time I had my knock sensor for the SMEC screwed in the intake and put the VW sensor in the stock knock sensor port in the 2.4 block.

How'd it work?

[A.J.]

How'd it work?

It worked okay. It picked up a lot of engine noise. I did that because at the time I couldn't trust the check engine light flashing when the PCM detected knock. Once I got that straightened out I could rely on the check engine light flashes and didn't use my det can anymore.