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Unusual Knock Sensor Question...

Old Aug 9, 2003 | 03:35 PM
  #1  
Scruit's Avatar
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Unusual Knock Sensor Question...

I'm about to swap in a new knock sensor. I was looking at it and wondering if I could make it easier to do...

What is stopping me from bolting the new knock sensor to a different part of the engine block? It would still work, no? It would still sense detonation (given the extraordinary accoustic conductivity of metal)

The knock sensor of my truck's V8 is bolted right at the bellhousing a full 12" from cylinders 1 and 5. That's factory and it works fine.
Old Aug 9, 2003 | 03:40 PM
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i was considering this too.......
Old Aug 10, 2003 | 10:59 AM
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This is a great idea. Please let us know how it goes. The entire Maxima community will be in your debt. I just changed mine so I am good for another few years, but I dread the prospect of another KS change in the future.
Old Aug 10, 2003 | 01:53 PM
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Re: Unusual Knock Sensor Question...

Hey i was wondering how much that new knock sensor cost you? I'm looking for a new one since mine is not workin. I have a 95 se.

Thanks
Old Aug 10, 2003 | 02:25 PM
  #5  
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ebay $90
Old Aug 10, 2003 | 03:41 PM
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Re: Unusual Knock Sensor Question...

Why do you want to bolt it to another place on the block?
It was designed to work between the heads.

If you want to keep it hooked up but keep it from retarding your timing you can mount it on the firewall.

There are a few racing teams that do this successfully.
It seems the ringing in a performance Y-pipe can cause phantom pre-ignition conditions which set off the KS. To eliminate this they mount the KS on the firewall.

IMPORTANT POINT: They also ALWAYS run high octane fuel and have everything else in their engines perfectly tuned first.

Beware that removing your KS from the engine or eliminating it with a resistor will allow your engine to run maximum spark advance whenever it wants.

At minimum you could easily burn up your valves if the rest of your engine isn't tuned perfectly.

I've done it. It works.

I didn't see any difference.... but my car has EVERYTHING tuned properly. I put it back on the block so I don't have to wonder if I'm killing my Max.


my 2 cents.....


Originally posted by Scruit
I'm about to swap in a new knock sensor. I was looking at it and wondering if I could make it easier to do...

What is stopping me from bolting the new knock sensor to a different part of the engine block? It would still work, no? It would still sense detonation (given the extraordinary accoustic conductivity of metal)

The knock sensor of my truck's V8 is bolted right at the bellhousing a full 12" from cylinders 1 and 5. That's factory and it works fine.
Old Aug 10, 2003 | 04:06 PM
  #7  
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Hook it up by the oil filter for easier access, somewhere up in there so we dont have to srape our little hands. Dont forget to run some extra wiring if not it will be useless.
Old Aug 10, 2003 | 07:41 PM
  #8  
Scruit's Avatar
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U wanna try me young boy?
 
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It should be able to bolt anywhere on the block and still be effective. It's picking up spark knock as vibrations using a piezo element.

I guess the problem with mounting it elsewhere is you may pick up phantom vibrations from the injectors, etc.
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