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Old 20-05-2006, 12:34 AM   #1
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Question What

IS A ENGINE
KNOCKMETER?
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Old 20-05-2006, 12:35 AM   #2
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Not specifically heard of a knockmeter, but have heard of a knock sensor. Assuming it does the same job, it detects detonation.
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Old 20-05-2006, 12:38 AM   #3
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look here....
http://www.livorsi.com/catalog/water...NE_KNOCKMETER_
how does it work? does it just detect irregular vibration?
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Old 20-05-2006, 12:39 AM   #4
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dare i ask why you want to know?
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Old 20-05-2006, 12:41 AM   #5
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just intrested!
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Old 20-05-2006, 12:48 AM   #6
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Yeh, same thing.
If yer engine is on the borderline, it'll start knocking before it detonates and blows itself to shit. This baby, (allegedly) lets you monitor it.

Most modern car efi systems have it built in so if the engine starts knocking it retards the ignition automatically.
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Old 20-05-2006, 12:54 AM   #7
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its like egt's and overheat lights they let you know as it goes pop. just incase you are deaf and didnt hear it
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Old 20-05-2006, 12:57 AM   #8
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I would tend to agree with that
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Old 20-05-2006, 01:02 AM   #9
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Quote:
Originally posted by Matt
Yeh, same thing.
If yer engine is on the borderline, it'll start knocking before it detonates and blows itself to shit. This baby, (allegedly) lets you monitor it.

Most modern car efi systems have it built in so if the engine starts knocking it retards the ignition automatically.
cool! thanks fot that
doya think its worth getting 1?
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Old 20-05-2006, 01:18 AM   #10
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for most people no but for you yes cus you might as well get another thing to look at rather than looking where you are going
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Old 20-05-2006, 12:40 PM   #11
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cool! thanks fot that
doya think its worth getting 1?
You should easily be able to hear if either end starts knockin...and if you do then STOP!!
Uncle didn't on the 04 Poker Run despite bein warned.....then there was a nasty noise...somethin like 9 holes in the block and no more 2.5efi
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Old 20-05-2006, 02:04 PM   #12
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I believe its a microphone with a filter thingy that basically listens for the distinct sound of knocking, which as Mat says is the first signs of detonation. Modern ignition systems have them to allow constant adjustment of the timing keeping it as advanced as possible and thus produce maximum power/efficiency without causing detonation. You could use it to set up your timing but the next time out you may have craper fuel and/or more weight in the boat etc. As you have far more power than you need just set the timing to the value recomended by the experts and don't worry about the 5hp you may have lost by not running it on the ragged edge.
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Old 20-05-2006, 02:13 PM   #13
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Just pre-empting you here but no you don't need a Lambda (exhaust gas oxygen) sensor either.
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Old 20-05-2006, 02:38 PM   #14
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Quote:
Originally posted by Johnny Boat Dude
Just pre-empting you here but no you don't need a Lambda (exhaust gas oxygen) sensor either.
ooo..show me a link how much.. where from ? will it make us go faster
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Old 20-05-2006, 08:04 PM   #15
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I believe Lambda Sensors have a short life on 2 srokes due to the oil.
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