Has anyone used the Knock link warning

[john@poolcovers]

Hi
Has anyone used knock link for detecting pre detonation on a air cooled motor?
Love to hear your experience and are they worth the investment?
Thanks
John

[Neil Harvey]

John,

I certainly recommend you always get 2nd and 3rd opinions on anything you buy. I posted the suggestion to use this warning device in another post. We sell this and advise many to use it. Its a warning light only, it will not stop detonation from happening. With this unit, you have to do that. Take you foot out of the throttle, use better fuel, adjust your ignition timing or all of the above.

The most difficult part of this application is where to install the knock sensor. Many put it between the throttle bracket and the engine case, or as we do, buy the 993 knock bridge and fit it to all 3 cylinder heads on one side of the engine. Both will require some mechanical work to achieve.

Is this a high end Knock control device. NO. Its a simple but effective warning light that self calibrates to the engine knock frequencies its attached too. We do not use this in any of our engine calibration work as we have listening devices, and cylinder pressure devices looking for knock. Calibration work requires more advanced devices. The knock link is a warning device.

Would I use this on any of my engines, if I needed to watch for knock. Absolutely or any other device that gives me a warning. Can you adjust your ignition timing with this? I guess so, you would advance the timing until the light is triggered, then back out the advance until you see no further warnings. For the DIY, a good little tool.

My company is known for high quality parts, so we add some creditability I hope.

But I do suggest you get further reviews of this little device and make your mind up with good references. If you need any further information on this product or help on installation, I'm happy to support.

[john@poolcovers]

Hi Neil ,
Thanks for your info.
What is your web site?
Do you need shielded wiring?
John

[K24madness]

I consider the knock link a second line of defense against detonation. Certainly far better than just trying to listen for knock on the open road. Not nearly as good as active knock management control via ECU. I think it’s a great addition to an early car without knock control.

The product itself is well thought out with noise filtering etc. Just as Neil pointed out the success/failure lies in proper knock sensor(s) installation.

[Neil Harvey]

Originally Posted by john@poolcovers

Hi Neil ,
Thanks for your info.
What is your web site?
Do you need shielded wiring?
John

John,

It comes with a semi terminated harness that has shielded wires to the sensor. For a 911 application the harness is too short and will need to be lengthened. The std kit is made for front engine cars.

We sell this or it can be purchased from any Link dealer.

nh

[Neil Harvey]

If there is enough interest in this, we would make up a dedicated kit for the air cooled 911 engines.

I'm not sure the best way to make the sensor fitment an easy "to do". When ever we have fitted the Bosch doughnut sensor to air cooled engines we use the 993 knock bridge and bolt it to all 3 heads on one side of the engine. But this is easy when the engine is apart. I will take a look at this and see if there can be an easy fitment that makes this as close to a plug and play use.

['76 911S 3.0]

I have no experience with the Link unit but have had a lot of success with the Phormula Knock products in the past:

https://www.phormula.com/