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Does a fluid filled harmonic balancer stop false knock readings?

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Old 05-20-2007, 10:29 PM
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Default Does a fluid filled harmonic balancer stop false knock readings?
Just as the title says... will a fluid filled harmonic balancer (rather than an elastomer balancer like the factory crank pulley) reduce or stop false knock readings on an FI car?

-Dave
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Old 05-21-2007, 01:16 AM
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No reason it should. IIRC, they damp motion over a certain rate of acceleration, not sound, and a knock sound (or false knock sound close enough to trigger KR) has a pretty distinctive hi-freq ring.

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Old 05-21-2007, 09:30 AM
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Interesting.... I think someone on eBay was claiming that fluid filled dampers reduce false knock readings.
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Old 05-21-2007, 10:57 AM
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Originally Posted by FastKat
Interesting.... I think someone on eBay was claiming that fluid filled dampers reduce false knock readings.
Ebay sellers also say magnets improve your fuel milage...
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Old 05-21-2007, 11:13 AM
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Removing your knock sensors will help alleviate false knock.

Tune to the AFR and trust it. And have a wideband in the car.
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Old 05-21-2007, 01:27 PM
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Yea, I know the eBay people make some wild "too good to be true" claims... that's why I checked here!
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