Stop Wasting Money On Engine Rebuilds | Link KnockBlock [TECH NUGGET]

Without a doubt, knock, aka detonation or pinging, is easily the biggest killer of any performance engine yet it’s still largely ignored or misunderstood by a large percentage of tuners. I’ve been a strong advocate for using quality audio knock detection products like Link’s G4+ KnockBlock on any tuning project for as long as I’ve been tuning.

Knock as is an abnormal combustion condition that occurs after the spark has initiated combustion. As the flame front moves through the combustion chamber, the heat and pressure inside the combustion chamber will rise. In some instances, this increase in heat and pressure can be enough to cause pockets of end gas (unburnt fuel and air) to auto-ignite or spontaneously combust. When this occurs, the result is an explosion rather than controlled combustion - Unlike normal combustion, detonation is like a stick of dynamite exploding. The flame front speed resulting from knock is supersonic and can travel in excess of 1000 m/s which results in a dramatic and sharp rise in cylinder pressure. These sharp spikes in pressure result in the ‘pinging’ noise you can audibly hear. This is the result of the structure of the engine resonating in response to the pressure spike, much like you would hear if you hit the engine with a hammer.

You can hear knock by using a piezoelectric sensor that monitors vibrations from the engine which it then converts into an electrical signal. On its own, this would be useless, but the KnockBlock runs the signal through a digital processor that converts this signal from electrical to audio which enables you to remove the background noise so instead, the specific frequencies that knock occurs at can be closely monitored via your headset.

If you want to make sure that your tuning is going to be both safe and reliable investing in a quality knock detection system is vital to catch knock before it has a chance to do serious damage to your engine and wallet. You wouldn’t attempt to tune an engine without a wideband air fuel ratio meter, so why try to tune without a way of accurately detecting knock?

#highperformanceacademy #learntotune #linkecu

[protuningaustralia]

Yes totally agree, i love my LINK KNOCK BLOCK,
I also love the ability to feed the output into the microphone input on my laptop and look at the knock output visually via LINK G4+ SOFTWARE.
For those who don't know, go to the TUNING TAB at the top of the laptop screen when you have the LINK TUNING SOFTWARE open.
Scroll down to KNOCK AUDIO 4TH OPTION DOWN from the top.
I run my output from my LINK KNOCK BLOCK into a Y piece, one 3.5 mm earphone lead from the Y piece to the microphone input on my laptop,
I then purchased a small amplifier and i use the output from the small amplifier to my headphones, due to my bad hearing.
This way i get the best of both worlds i can watch for detonation in certain circumstances when tuning on the dyno on my laptop when i can, but i also can listen for it the whole time.
I usually have a page setup with the fuel table open and the AUDIO KNOCK SCREEN displaying below the fuel table, while auto tuning or manually tuning the fuel table.
Any detonation hit the cell marker, tagging the detonation point, hit the I key to replace the fuel table with the Ignition table and make adjustments from there.
This is one of m any ways to tune with this great device.

[gammalight]

Can't go wrong with better knock detection.

[VEDEMRACING]

Great video, goes a long way in saving money!

[invertedvpowerhouse]

I never heard about these before seeing your videos. Yet Ive spoken with many people who have modified cars/done rebuilds.... Guess its little known

[leonchisler]

Something like this would be nice for tuning a hi comp carby engine. That doesn’t have efi and knock sensors.

I wish it was a little more inexpensive

[EugeniuszSiekiera]

Are there chances for webinar presenting capabilities similar to the one with plex knoc monitor?

[Jafromobile]

$500-$700... OUCH! I'm lucky all my turbo cars already have knock sensors, I guess? I was interested in this device as a means of verifying the accuracy of the knock sensors I have on 4 cars, but not at that price. I can buy 9 new knock sensors for that much. I can see how it would be useful to someone who doesn't have knock sensors, though.

[secghia]

safeguard! waaaay cheaper and made in the good ol' land of the bald eagle! but you Aussies are still cool!

[ginoasci]

Is it possible that the ECU can cause an engine knocking mostly from a cold start, then taper off while it’s warming up ?

Or if there is a knocking it will be there the whole time while the engine is running?

Is it possible that just a portion of the programming could be off ?

[nxride]

Is this a stand alone device or can you run it with a Link G4+ ECU? Is it worth running it with the ECU like you would a wideband O2?

[automotivelove]

for $500? Why not just $49 with a software download and a knock sensor with TunerNerd Knock Monitor ...?

[isacchris]

A good mechanic can hear a engine knocking! More technology because people are terrible at their job!