Announcements

Over the last couple years the priorities in my life have changed. Had Matrix Garage grown big enough to hire enough employees and leave them to running it while I pursued other things I would have happily taken that route but it has generally stayed just big enough to keep me working overtime. 
I have decided to start focusing my carreer and passions elsewhere and that means that supporting the AW, AE, 4A and related communities has had to be moved much lower on the priority list. I have decided to keep the store up to provide parts that only we offer, or other things that are hard to come by elsewhere. You will notice many big name, readily available products have been taken down and we will continue to do so. It's just not worth our time trying to compete with the big corporations selling at cutthroat prices and it just takes up more of my time. 
I will try to keep providing those parts that we make or that we have developed and sell as a service to the community but understand that now this is something I do in my spare time because I don't want to leave people hanging. 
I try to make shipments and process orders at least twice a week. If you want Amazon next day shipping buy from Amazon. I will do my best to keep order time and customer service at a reasonable level but have some understanding. I am not making money on this and it takes away from my other work and other issues that are very important to me right now. 
I have always wanted to make our designs and other information open source and available to the community but to do so properly would take a lot of time making sure that models and drawings were complete, accurate, or properly described. To go through everything and make sure it was something that I felt comfortable releasing to the community. I would love to find someone who was willing to help me do this. Someone in engineering school or passionate about this to help go through 3D scans, CAD designs, and information to prepare it. If you are interested feel free to email me. 


 

 


 

Knocklink G4 Knock light

$186.00

Engine Detonation, Knock and Pre-Ignition Detection and Monitoring

 

The G4 KnockLink Digital Warning is the only self calibrating, knock warning instrument on the market. The KnockLink won a SEMA 2011 media award for a new product.
 

 

Drive with peace of mind, knowing that your engine is operating safely when using the G4 KnockLink. The KnockLink will show the beginning detonation long before you hear it.

The G4 KnockLink is designed for both street and race use.

 

Typical causes of engine knock:

Engine knock is one of the most damaging effects in any engine. Detonation (knock) can destroy your engine in seconds. You need to know when knock occurs, instantly. If knock does occur, the KnockLink warns the driver with a high intensity red flash.

Knock can happen when there is:

  • Poor fuel quality
  • Incorrectly rated spark plugs
  • Engine cooling problems
  • Engine management problems

What is Knock?

Knock, also known as detonation or “pinging”, refers to the spontaneous combustion of an air/fuel mixture inside the combustion chamber.

The self calibrating, G4 KnockLink will flash to warn the driver of any knock present.

Knocking is induced by excessive pressure within the combustion chamber causing the air/fuel mixture to self detonate. Excessive combustion pressures can be a result of increased engine temperature, high boost pressure, elevated inlet air temperature, lean mixture or over advanced ignition timing.

Tuning for performance and efficiency brings an engine nearer to the point of detonation. To achieve the maximum output and efficiency, combustion pressures must be optimised to create the greatest force on the top of the piston (or side of rotor). This combustion pressure is controlled by ignition timing and air to fuel mixture.

If the air/fuel charge detonates, a large pressure impulse is created vibrating the surrounding engine structure. The effects of the vibrations can cause cracked pistons, bent rods and damaged bearings. This gives the need to accurately detect engine knock.

The most common way of detecting engine knock is to bolt a piezoelectric vibration transducer (knock sensor) to the side of the engine block. The knock sensor behaves similarly to an audio microphone but converts vibrations rather than audio to an electric signal.

 

Why choose the KnockLink over other products on the market?

The KnockLink G4 is the only device on the market that requires no setup. Other systems require time consuming gain, frequency and noise settings to be adjusted. Without proper knock listening tools, this can prove difficult if not impossible. The KnockLink requires none of this, just wire in and start the engine.

Even light detonation will damage an engine over time. The G4 KnockLink's microprocessor continuously scans the knock signal and warns for any knock occurring. The engine's RPM and load is automatically 3D profiled by the KnockLink, continuously storing and dynamically adjusting this noise profile map while looking for the particular knock frequency.

The G4 KnockLink is the only self-calibrating ignition warning instrument on the market.

Connect to either your existing unused sensor or, preferably, add an additional sensor (sold separately).

"Great unit guys. Ran mine up today on the dyno and it picked some detonation up
that I didn't hear with my ear phones first time power run"

Mason Lockyer - Speedworks Dyno Tuning, Oct 21, 2011 (From Link ECU FaceBook)

How does the new KnockLink G4 compare to the old?

The old KnockLink was admittedly crude in its operation, the displayed value was proportional to engine noise and knock could be seen as an addition to this. The new KnockLink uses advanced signal processing techniques to determine actual engine knock, normal engine noise is completely discarded.

The new KnockLink is housed in an anodized black aluminum enclosure, providing sleek looks along with high durability... steps ahead of the old KnockLink.

 

 

  • Intelligent self learning digital system.
  • High detection accuracy (>90%).*
  • No complicated calibration process.
  • High intensity red warning flash.

* based on feedback from professional engine tuners

 

KnockLink G4 - visual detonation warning

 
The G4 KnockLink Digital Warning is the only self calibrating, knock warning instrument on the market. The KnockLink won a SEMA 2011 media award for a new product.
 

 

Drive with peace of mind, knowing that your engine is operating safely when using the G4 KnockLink. The KnockLink will show the beginning detonation long before you hear it.

The G4 KnockLink is designed for both street and race use.

"Ignition timing can make or break an engine and the effects of too much timing or a bad batch of gas can really ruin your day.
The team at Link has been hard at work with knock detection devices.
The G4 KnockLink is a stand alone Knock Detection warning light that is simple to install and actually works.  I was surprised at how well the KnockLink worked either with factory sensors or noisy engines - the KnockLink picked up detonation that if left alone would have destroyed an engine.
The KnockLink is perfect as a warning device in all cars for that peace of mind as well as a handy tuning tool."

David Heerdegen
Dtech Motorsport

Operation is simple. The colour of the LED represents four different modes:

Dim Blue - KnockLink is powered, waiting for the engine to be started

Flashing Blue - KnockLink has detected the engine has started and is now calibrating

Dim Green - KnockLink is adapting to the engine's noise profile and listening for knock

Flashing Red - KnockLink has detected knock. Avoid large throttle openings, seek professional advice

 

 

The KnockLink standard kit includes:

  • G4 KnockLink with wiring loom
  • Mounting bracket
  • Installation guide

Optional Accessories:

  • Knock Sensor
  • Belden premium shielded wire

 

Image: 
List price: $0.00

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Price: $186.00
Weight: 0.5 lb
Dimensions: 4 in × 2 in × 4 in

courtesy of webmatter.de