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Search: Posts Made By: John_at_J&S
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Forum: General Q & A
02-23-2006, 04:39 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

That sensor is "non resonant", meaning that it's not tuned to a particular frequency. It responds to all frequencies, up to about 20kHz.

The filtering is done electronically, inside the...
Forum: General Q & A
02-20-2006, 11:42 AM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

GM makes several sensors tuned at that frequency. Mounting thread and internal load resistance account for the many part numbers.

Key on, engine not running, knock sensor connected, measure the...
Forum: General Q & A
02-12-2006, 11:11 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Rage: We are not a supporting vendor. I don't know how the product fits in with LB's lineup, but they may carry them after further testing.

GM sensors have the part number engraved on the body,...
Forum: General Q & A
02-05-2006, 12:37 AM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

The unit is programmed with a Motorola development system, so it must be sent back for software changes.

There are no ROM chips. There is no user software. The parameters not controlled by...
Forum: General Q & A
02-04-2006, 05:43 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Yes, I can program a curve like that. As I said above, pick start and stop RPM points, and an amount.
Forum: General Q & A
02-04-2006, 01:16 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Wish lists are also a shelf item.

Are you asking if I can add an advance curve? I can do that. Some of our units have a retard/advance curve. For example, see the figure at the bottom of the...
Forum: General Q & A
02-03-2006, 11:02 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Photo of LB's evaluation kit is available on our site. Click on products, then new marine racing version. It's the first photo.
Forum: General Q & A
01-29-2006, 03:56 AM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

HP350SC:

Some people have their minds made up about knock sensors. They've heard "knock sensors don't work" so many times, they believe it. As Rush Limbaugh says, "Thinking is hard work."

It...
Forum: General Q & A
01-26-2006, 09:00 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

CcanDo:

That evaluation unit will ship to LB on Friday or Saturday.
Forum: General Q & A
01-26-2006, 12:04 AM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

GPM:

The automotive units cannot be fully sealed. There are switches, control knobs, and connectors on the front panel, with exposed solder joints, etc.

In the marine units, the electronics...
Forum: General Q & A
01-23-2006, 05:17 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Gary:

Both versions get crank angle information from the ignition system. No need to install a separate crank trigger.
Forum: General Q & A
01-22-2006, 09:20 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

GPM:

If you don't go near salt water, you could use our automotive V.O. This unit is not totally sealed, and it deletes the onboard two bar MAP sensor and boost retard software.

This unit will...
Forum: General Q & A
01-21-2006, 04:02 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

Price-wise, I think they run about the same.

The Anson is a knock gauge.

The J&S is an ignition module with rev limiter, a knock detector that retards only the knocking cylinders, and a boost...
Forum: General Q & A
01-10-2006, 06:33 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

GPM:

It's a knock control ignition. It doesn't care about the kind of fuel system.

Consider using it, even if you have a laptop programmable ECU, like these Porsche tuners did with a Motec:
...
Forum: General Q & A
01-10-2006, 01:14 PM
Replies: 105
Views: 20,638
Posted By John_at_J&S

Re: Programmable knock control systems

GPM: Tom Earhart was using these before he went to an EFI with knock control.

CcanDo: The unit was mentioned here: ...
Showing results 1 to 15 of 15


 
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