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Search: Posts Made By: Rage
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Forum: General Q & A
11-19-2007, 09:25 AM
Replies: 105
Views: 20,641
Posted By Rage

Ruaraidh, Thanks, that clarifies a lot. ...

Ruaraidh,

Thanks, that clarifies a lot.

In my layman's opinion the J&S sysyem's ability to control knock on a cylinder by cylinder basis is a no brainer best approach.

For someone without...
Forum: General Q & A
11-16-2007, 04:06 PM
Replies: 105
Views: 20,641
Posted By Rage

John, Excellent explaination/demonstration...

John,

Excellent explaination/demonstration by the way. Thanks!
Forum: General Q & A
11-16-2007, 04:02 PM
Replies: 105
Views: 20,641
Posted By Rage

John, What I would love to see is a...

John,

What I would love to see is a frequency spectrum graph sweep of an engine's running background noise as the knock sensor signals it without engine knock and then with engine knock. Anything...
Forum: General Q & A
11-16-2007, 11:07 AM
Replies: 105
Views: 20,641
Posted By Rage

Ruaraidh, This is very interesting. Are the...

Ruaraidh,

This is very interesting. Are the 11-14kHz harmonics? Why does 11-14kHz give the best results for knock detection apparently regardless of engine size?
Forum: General Q & A
11-16-2007, 08:42 AM
Replies: 105
Views: 20,641
Posted By Rage

PM/Email me your Email address and I will send a...

PM/Email me your Email address and I will send a copy.

Bill
Forum: General Q & A
11-15-2007, 01:29 PM
Replies: 105
Views: 20,641
Posted By Rage

Really. I have the general specs on my Delphi...

Really. I have the general specs on my Delphi knock sensors, copy attached, but have no idea what the resonant knock sensor output versus engine vibration specification is. I am getting the...
Forum: General Q & A
11-15-2007, 10:13 AM
Replies: 105
Views: 20,641
Posted By Rage

John, I guess back to my original question "What...

John, I guess back to my original question "What is involved to configure a J&S unit to work with the pair of Mercruiser "non-resonant frequency" knock sensors versus a single frequency tuned knock...
Forum: General Q & A
11-13-2007, 03:02 PM
Replies: 105
Views: 20,641
Posted By Rage

Sure if you don't mind. Not a high priority...

Sure if you don't mind. Not a high priority item. Just trying to learn more about these different knock warning / sensing systems.
Forum: General Q & A
11-13-2007, 08:50 AM
Replies: 105
Views: 20,641
Posted By Rage

Yes, but no explaination has been forthcoming as...

Yes, but no explaination has been forthcoming as to how so until then................
Forum: General Q & A
11-12-2007, 04:08 PM
Replies: 105
Views: 20,641
Posted By Rage

That is what I thought but I wanted to be sure. ...

That is what I thought but I wanted to be sure. Thanks.
Forum: General Q & A
11-09-2007, 08:31 AM
Replies: 105
Views: 20,641
Posted By Rage

John ?

John ?
Forum: General Q & A
10-29-2007, 01:40 PM
Replies: 105
Views: 20,641
Posted By Rage

Yes it has been a while. What is involved to...

Yes it has been a while.

What is involved to configure a J&S unit to work with the Mercruiser "non-resonant frequency" knock sensors versus a frequency tuned knock sensor?
Forum: General Q & A
10-24-2007, 11:04 AM
Replies: 105
Views: 20,641
Posted By Rage

John, Will the J&S unit work with the...

John,

Will the J&S unit work with the Mercruiser "non-resonant frequency" knock sensors (two of them, one on each bank) or is a frequency tuned knock sensor required?
Forum: General Q & A
02-26-2006, 12:05 PM
Replies: 105
Views: 20,641
Posted By Rage

Re: Programmable knock control systems

John,

Thanks indeed for that clarification!

What GM sensor part number, what additional hardware would I need and where would I need to install it if I wanted to add a correctly tuned knock...
Forum: General Q & A
02-23-2006, 01:03 PM
Replies: 105
Views: 20,641
Posted By Rage

Re: Programmable knock control systems

John,

The sensor (pn 878187) is a donut shaped unit with an electrical cable and pin connector. There is no thread. The sensor is bolted to the block with a stud (PN 16-862915) with a...
Forum: General Q & A
02-20-2006, 08:58 AM
Replies: 105
Views: 20,641
Posted By Rage

Re: Programmable knock control systems

John,

What is the GM part number for the 5.2kHz knock sensor that will fit on the 496HO? I want to check and see if that is the unit on my 496HO.

Thanks.
Forum: General Q & A
02-12-2006, 04:42 PM
Replies: 105
Views: 20,641
Posted By Rage

Re: Programmable knock control systems

John_at_J&S,

Do you have a web site? If so what is the URL.

What is the price of you marine unit and where is it available from?

Can you identify which frequency range is used for the...
Forum: General Q & A
02-12-2006, 03:17 PM
Replies: 105
Views: 20,641
Posted By Rage

Re: Programmable knock control systems

CcanDo,

How would the J&S Safeguard capabilities/features relative to knock control with the GM ECU compare with the Merc PCM555 which alledgedy also addresses knock events on a cylinder by...
Showing results 1 to 18 of 18


 
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