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Knock Sensor: Delete or keep

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Old Dec 16, 2005 | 08:28 AM
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Default Knock Sensor: Delete or keep
I'm having a 408 built for simplicity just say street/race sized. How important is keeping the KS in the tune? My tuner will have input; my mechanic likes to have them. I'm sure you discuss here...
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Old Dec 16, 2005 | 09:29 AM
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I think you'd want to keep them. I desensitized mine a bit to get rid of some of the false knock I was logging. I really don't think you'd want to delete them IMHO.
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Old Dec 16, 2005 | 09:59 AM
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I'm with jmm on this. I can't think of any reason why you would want to get rid of them entirely.
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Old Dec 16, 2005 | 10:00 AM
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keep them... it's added insurance... you're building a big dollar motor... no sense adding more risk than necessary
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Old Dec 16, 2005 | 11:38 AM
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I forgot that the signal is adjustable...glad we have agreement.
Thanks -
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Old Dec 16, 2005 | 03:59 PM
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Where in Edit may I "desensitized" the KR ?, I have " low frecxxx "on mine for 6-8 months after replacing KR' and wires and meg out all connections and building dam around them ( know problem is not water )
thanks, Johnny
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Old Dec 16, 2005 | 08:09 PM
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Originally Posted by SS SLP2
Where in Edit may I "desensitized" the KR ?, I have " low frecxxx "on mine for 6-8 months after replacing KR' and wires and meg out all connections and building dam around them ( know problem is not water )
thanks, Johnny
BTW that's one reason beyond the expected noise of valve train for the inquiry...main the sensor wells were some rust buckets. I never really thought why it was heavily suggested to use a leaf blower to dry my engine.
I'd be real certain you have clean connections all the way to the ECU...as well the torque spec was real light...i'll know this is nothing new to most of you.
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Old Dec 16, 2005 | 10:47 PM
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Macom: you may have offered something I may have overlooked
"...as well the torque spec was real light..." I think I pulled them tight, what are torque spec on them ? " torque spec " are the only thing I can think of I may have overlooked - been into them 3 times
thinks for the reply, Johnny
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Old Dec 17, 2005 | 01:35 AM
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I'm sure you got this covered, but is the wire okay? It's easy to route it under where the manifold seats, flattening or crushing it.
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Old Dec 17, 2005 | 09:29 AM
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Originally Posted by SS SLP2
Macom: you may have offered something I may have overlooked
"...as well the torque spec was real light..." I think I pulled them tight, what are torque spec on them ? " torque spec " are the only thing I can think of I may have overlooked - been into them 3 times
thinks for the reply, Johnny
My 2000 LS1 calls for:
Knock Sensors

20 N·m

15 lb ft


My understanding is that over tightening may break the piezo mic sensor inside the knock sensors. Good luck.
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Old Dec 17, 2005 | 09:35 AM
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Keep them. Just adjust the sensitivity so that it will only pick up a real knock.
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Old Dec 17, 2005 | 10:36 AM
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Originally Posted by SgtB
Keep them. Just adjust the sensitivity so that it will only pick up a real knock.
That's the answer for me.
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