RE: Desensitizing GM knock sensors

[Dave Plummer <davepl@MICROSOFT.com>]

I had read somewhere that the knock sensor doesn't care so much about
amplitude (volume) as frequency.  Therefore, putting a resistor inline that
just reduces the amplitude of the circuit wouldn't seem to me to accompish
much...

- Dave

> -----Original Message-----
> From: nacelp [mailto:nacelp@bright.net]
> Sent: Friday, February 18, 2000 3:30 AM
> To: gmecm@diy-efi.org
> Subject: Re: Desensitizing GM knock sensors
> 
> 
> 
> The if problem isn't false knock, then fix the cause of the knock.  Or
> ignore it, and blow up the engine.  10PSI, and 9.4, that will 
> be hard to
> fix.  Try 6 and see where ya are.
> You talk to the people that sold you that S/C?.
> 9.4, on a N/A can be a headache.
> 383, what for cam?.
> Might check cam timing.
> You also way out of calibration room.  You meantion 100 KPa.  
> You should
> have a 2 bar MAP and get things right.  Course as things 
> stand now I don't
> know anyone with a 2 bar calibration (program) for a LT1.
> Grumpy
> 
> 
> >   On my 92 LT1 383 Vette I have a CR of 9.4:1 and a Vortec 
> Supercharger
> (10#
> > boost). I have tried 101 76 Race gas, have changed the 
> spark map over 4000
> @
> > 100KPA to as low as 20 degrees Adv. and still show a 7 
> degree knock retard
> > spike anytime in boost (over 100KPA). What do you think 
> about trying to
> > densitize the Knock Sensors. If so what is the best way, 
> teflon tape?
> >                                  Thanks, Jim
> >
> >
> > 
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