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cheap and easy knock gauge

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Old Jun 14, 2006 | 11:38 AM
  #1  
Batass's Avatar
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From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
cheap and easy knock gauge

I swapped out my tbi for a carb and was would like to still use the knock sensor. Wouldnt it be possible to just hook up a light to the sensor without buying an expensive gauge? Or is there more to it than knock-no knock?
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Old Jun 14, 2006 | 11:40 AM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The knock sensor is just a glorified microphone, so you'd need some supporting electronics.
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Old Jun 14, 2006 | 11:48 AM
  #3  
Batass's Avatar
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From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
Oh so its not just like a relay, its more of a strength of signal type of sensor?
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Old Jun 14, 2006 | 12:21 PM
  #4  
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
i remember this being discussed in an old thread.

The sensor gives off some sort of signal that is decoded my the ECM. or something like that.

Not as simple as hooking up a light or anything. I believe someone made up a diagram of a circuit you could build that would allow you to use just a bulb
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