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Tighten and glued knock sensor, now reading 20 instead of 100+

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Old 12-21-03, 12:07 AM
  #26  
DGRR 2017 4/26-4/30, 2017

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Well, I tested today..

So, this is what I saw..

when I'm not boosting, I hit Peak 60-75 range at 2200-3000RPM

When I boost (.80 bar on PFC), and go above 3000 RPM.. I didn't see any above 45 peak..

I went all the way upto red line and seems like its doing pretty good (<75).

but when the car was cold, and I started to boost a little (under 3500RPM), I notice I peaked at 100.. highest I've seen so far.. but when warmed up.. Highest during 20mile drive was 75.

I'm changing plugs tomorrow.. going all 9's.. I'm running stock 9 and 7's..
Old 12-21-03, 09:35 AM
  #27  
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Originally posted by J.S.J
I believe the knock sensor is a Paleozoic Crystal which reacts ...


Are you sure you don't mean 'piezoelectric'?
Old 12-21-03, 02:35 PM
  #28  
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Originally posted by paw140


Are you sure you don't mean 'piezoelectric'?
Well, the crystals *could* be a 1/2 billion years old...
Old 12-23-03, 01:44 AM
  #29  
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Just an example of how unreliable the stock knock sensor (or mounting location) can be:



I had just *started* the car.

Old 12-23-03, 12:23 PM
  #30  
DGRR 2017 4/26-4/30, 2017

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WOW.. thats high..
Old 12-23-03, 07:03 PM
  #31  
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That's just the point though - it wasn't real knock.
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