How to make and install a Knock detection can (Ghetto Inside!)
#1
How to make and install a Knock detection can (Ghetto Inside!)
Here is another wonderful thread free of charge:
How to make and install a Det Can
And another one from a thread but with mec stethoscope, post #31:
danz's 90 civic cx built for 11s - Page 2 - D-series.org
How to make and install a Det Can
And another one from a thread but with mec stethoscope, post #31:
danz's 90 civic cx built for 11s - Page 2 - D-series.org
#5
Having said that, I think there are pros and cons to both. The ol' stethoscope into ear-protectors are rugged, simple, and they work. On the flip side, there is no volume control, they're bulky, and look a little ghetto. Electronic cans solve the bulk and volume control however like all electronic gizmos, components can wear and eventually fail. Pick your poison.
#6
The Gizzmo K-Mon is the shiz. I'm saving up for one
Gizzmo electronics Pty Ltd, specialists in performance ecu upgrades/chips, dyno tuning, performance products including launch controllers, shiftlamps, vtec controllers, boost controllers, IBC, MSIBC, CAMFC, phenolic gaskets, apexi, apex, aftermarket
Gizzmo electronics Pty Ltd, specialists in performance ecu upgrades/chips, dyno tuning, performance products including launch controllers, shiftlamps, vtec controllers, boost controllers, IBC, MSIBC, CAMFC, phenolic gaskets, apexi, apex, aftermarket
#9
knock amplifier
This is the one I ended up making which took around an hour with my Radio Shack electronic skills, lol.
$12 for amplifier (suggest EBAY)
$8 on clamps, bought a pair just in case a messed up the welds (Home Depot or Harbor Freight)
$7 to $10 on headphone cables (Radio Shack or sometimes Dollar Tree)
Explanation of engine knock and detection tools:
Browser Warning
DIY Engine knocking detection tool
Browser Warning
The cool thing about the electronic amplifier is it can be relocated to hear the transmission, cylinder head, crank, bov, compressor, etc. because it uses a clamp compared to bolting it to one specific location.
Note: One difference with my setup is I used a headphone cable leaving the plug side available. The clamp can be left on the engine bay and whenever I want to hear noises its just reaching to the glove compartment and plug the headphone amplifier. There is barely any static at all, sounds are crisp clear. Only problem is when it is clamped near the fan so try to use an area distant from the airflow.
I tested it on the beater stock Escort GT (1.8 dohc) and I could hear very clear engine knock at 2,000 to 3,000 rpms which I never ever detected using a 8" extension placed straight on the engine block.
It is cool because I can hear the shifting, when the clutch engages, the turbo spool up, bov activate, the sound of the valves opening and closing, ticking of injectors. At work my friends look at me as been crazy, lol, although they found very interesting how everything can be heard over the headphones.
$12 for amplifier (suggest EBAY)
$8 on clamps, bought a pair just in case a messed up the welds (Home Depot or Harbor Freight)
$7 to $10 on headphone cables (Radio Shack or sometimes Dollar Tree)
Explanation of engine knock and detection tools:
Browser Warning
DIY Engine knocking detection tool
Browser Warning
The cool thing about the electronic amplifier is it can be relocated to hear the transmission, cylinder head, crank, bov, compressor, etc. because it uses a clamp compared to bolting it to one specific location.
Note: One difference with my setup is I used a headphone cable leaving the plug side available. The clamp can be left on the engine bay and whenever I want to hear noises its just reaching to the glove compartment and plug the headphone amplifier. There is barely any static at all, sounds are crisp clear. Only problem is when it is clamped near the fan so try to use an area distant from the airflow.
I tested it on the beater stock Escort GT (1.8 dohc) and I could hear very clear engine knock at 2,000 to 3,000 rpms which I never ever detected using a 8" extension placed straight on the engine block.
It is cool because I can hear the shifting, when the clutch engages, the turbo spool up, bov activate, the sound of the valves opening and closing, ticking of injectors. At work my friends look at me as been crazy, lol, although they found very interesting how everything can be heard over the headphones.
Last edited by psiturbo; 01-29-2010 at 08:50 PM. Reason: JDMPOWELOL
#12
Elite Member
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Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,360
Total Cats: 43
Uhm . . .
Well unless you're doing it on a dyno, the only way you can listen to your engine with a socket extension is without a load on it..
On second thought.. Nevermind.
Thanks for the writeup links about the detonation amp though.
Well unless you're doing it on a dyno, the only way you can listen to your engine with a socket extension is without a load on it..
On second thought.. Nevermind.
Thanks for the writeup links about the detonation amp though.
#14
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,100
I have a mechanical set similar to the ones in the OP, and they are foolproof. Nice, rhythmic, quiet buzz, and then a very distinct off-beat tapping when it starts to ping.
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