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Old 05-10-2005, 02:19 PM   #1
rich728
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Default stand alone knock sensors

The only one ive found is knocklink. Any others on the market?

for those with a knocklink, how accurate are they?
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Old 05-10-2005, 03:38 PM   #2
pyrex
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MSD makes "Engine Knock Alert" http://www.msdignition.com/tool_8.htm

I just installed a knocklink, although I haven't seen any det yet I think it is pretty sensitive. I can see low level (green light) activity when I really get on it and I'm not even sure that I installed the sensor correctly. I used the bolt that is right next to the stock sensor. There was a bracket already on the bolt so I put the sensor on top of the bracket, using a longer bolt. I don't know if the bracket affects the sensitivity of the sensor or not.

Last edited by pyrex; 05-10-2005 at 03:43 PM. Reason: clarity
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Old 05-10-2005, 05:47 PM   #3
wgknestrick
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Some company really needs to package this in a 52mm or 60 gauge format. All (well both of them) knock sensors are very crudely mounted and finished off in cheap plastic housings. I dare you to find a place to mount either where they are clearly visable and look like they belong. I would pay dearly for something that was complete, and came in a gauge housing that could be mounted just about anywhere.

Kind of like what AEM did with their UEGO A/F meter. Before them, no one even made something that was packaged so well.
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Old 05-10-2005, 06:33 PM   #4
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Quote:
Originally Posted by wgknestrick
Some company really needs to package this in a 52mm or 60 gauge format.
You mean like this:

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Old 05-10-2005, 06:43 PM   #5
wgknestrick
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Not quite. While yes that is in a gauge format, knock is not something well represented by an analog dial. Unless it flashes and beeps past a certain level, it is mostly novelty to me.

I want a simple LED linear meter in a gauge that beeps and flashes past a user set point. I don't want to see or hear anything out of that thing unless there is trouble.

Try monitoring that gauge when at WOT. How do you discern between 40 and 60 (what is it in %?) You are in knock trouble for a split second.
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Old 05-10-2005, 09:26 PM   #6
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Quote:
Originally Posted by coolcougar
You mean like this:

It says digital but it looks analog. Anyone know how it works?
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Old 05-10-2005, 10:01 PM   #7
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j&s is probbly the best
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Old 05-11-2005, 01:52 AM   #8
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Quote:
Originally Posted by wgknestrick
Some company really needs to package this in a 52mm or 60 gauge format. All (well both of them) knock sensors are very crudely mounted and finished off in cheap plastic housings. I dare you to find a place to mount either where they are clearly visable and look like they belong. I would pay dearly for something that was complete, and came in a gauge housing that could be mounted just about anywhere.

Kind of like what AEM did with their UEGO A/F meter. Before them, no one even made something that was packaged so well.
OK
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Old 05-11-2005, 06:03 AM   #9
rich728
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now that is a a really slick install. is that knocklink? i hope you made a how to guide
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Old 05-11-2005, 10:44 AM   #10
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How are you guys interfacing an audio mechanism (buzzer) with your knock monitors? I imagine the LED solution would be hard to see in some daylight circumstances. Not to mention while under heavy throttle with both eyes glued to the road…
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Old 05-11-2005, 12:26 PM   #11
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I've been kicking around the idea of building my own "knock sensor" for a few months. Basically you have a microphone, a filter, and an led bar-graph display. How hard could it be?
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Old 06-26-2005, 08:45 AM   #12
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This is a knocklink that I modified



I'm not any good with wiring so the entire box it tucked into the dash. I just took the cover off, used the holes in it as a template and drilled through to allow the leds to drop through. 30 minute job max.

Keeps it in your line of site as well although I was tempted to do it through the top of the dash and turn it into a HUD.
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Old 06-26-2005, 05:16 PM   #13
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A $50 product called "Knocksense" seems to be popular within the Volvo community. See http://www.viatrack.ca for what skimpy details exist about it.

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Old 06-27-2005, 02:13 PM   #14
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Quote:
Originally Posted by fogdor
I've been kicking around the idea of building my own "knock sensor" for a few months. Basically you have a microphone, a filter, and an led bar-graph display. How hard could it be?
Good luck making a filter thats accurate.
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Old 06-29-2005, 06:53 PM   #15
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Quote:
Originally Posted by coolcougar
You mean like this:

where can i buy one of these
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Old 06-30-2005, 12:38 PM   #16
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Links to some other detonation monitoring options:

http://www.jandssafeguard.com/
KnockLink
Casper knock sensor
Snap-On Electronic Ear Part Number: YA6500 AKA det cans
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Old 07-03-2005, 01:39 AM   #17
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I've made mine own knock listening device.
$20 Bosch knock sensor (used at a Volvo junk yard, excuse me, salvage yard)
$10 cable with aligator clips and a minijack audio plug from Radio Shack
Plug the microphone (knock sensor) right into the computer.
I filter out all frequencys except 5-10 kHz with equalizer in sound software (I use a Mac specific program Final Vinyl but I've used other effectively--30 band equalizer, but it's overkill). Sound is processed and played through on the computer speakers or via head phones. Det sounds are very distinct as everyone knows.

It's just for tuning, but it works as well as TXS Tuner.
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Old 07-03-2005, 01:46 AM   #18
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thanks for the link unabomber. Anyone happen to know any good vendors selling knocklinks. Found a coupel that were out of business or overseas.
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Old 07-04-2005, 12:57 PM   #19
Tgui
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Sort of on topic... where the heck are you people mounting your knock sensors? I tore my intercooler off looking for some great place to mount mine, but no luck.
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Old 07-26-2005, 01:22 AM   #20
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Quote:
Originally Posted by Tgui
Sort of on topic... where the heck are you people mounting your knock sensors? I tore my intercooler off looking for some great place to mount mine, but no luck.
Same here... back when I DID use my tuner pro's knock sensor I couldn't find a place to mount it. I wanna start using it again but I still have no idea where to put it.
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Old 07-26-2005, 04:19 AM   #21
WolfPlayer
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Quote:
Originally Posted by bboy
I've made mine own knock listening device.
$20 Bosch knock sensor (used at a Volvo junk yard, excuse me, salvage yard)
$10 cable with aligator clips and a minijack audio plug from Radio Shack
Plug the microphone (knock sensor) right into the computer.
I filter out all frequencys except 5-10 kHz with equalizer in sound software (I use a Mac specific program Final Vinyl but I've used other effectively--30 band equalizer, but it's overkill). Sound is processed and played through on the computer speakers or via head phones. Det sounds are very distinct as everyone knows.

It's just for tuning, but it works as well as TXS Tuner.
Info on which specific knock sensor along with how you wired it up would be awesome. Great idea. A++ in my book.

t
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Old 08-13-2005, 02:34 PM   #22
singletrack
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I just wanted to revive this thread to show the location of the knock sensor I installed on my STi. This is the bosch sensor commonly sold with the knocklink. It's installed at the same angle as the stock sensor which is not visible in the pictures; I'm not sure if it makes a difference really.

In order to get the bracket to fit on top of the sensor, you can insert a 1/4" extension into the hole in the bracket and bend it slightly. I can't recall the length, thread, etc of the bolt, but I just pulled the stock one, drove to the parts store, and came back with one that was longer.

A quick tip - when replacing the intercooler (assuming you have a TM) use a touch of soap on the outside of the compressor outlet to make sure the rubber boot slides on easy : )

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Old 08-13-2005, 07:20 PM   #23
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Default Another possibility?

There appears that there may be another option for a possible stand alone knock sensor... I'm not 100% that this is stand alone though...

http://forums.nasioc.com/forums/show...php?p=10718893

Last edited by coolcougar; 08-13-2005 at 10:58 PM. Reason: poor Spelling
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Old 03-09-2007, 02:41 PM   #24
Jaxx
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i though i would bump this as its linked in the ecu faq and add an important thing is not mentioned

most knock "lights" will only display the knock, the JandS will actually retard advance up to 20 deg /cyl when it senses knock ..

this is very useful when tuning with an ecu that has insufficient knock sensing/retard like a powerfc or autronic
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Old 03-09-2007, 08:58 PM   #25
IllNastyImpreza
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so whats the best one for the money? where can I purcahse them ?
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