| knock sensor placement [message #331262] |
Mon, 23 April 2018 07:47  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Does anybody have any experience with locating the knock sensor on a 455??
While the engine is still loose and all part parts are easily accessed (in different places), I am planning to install a knock sensor as it will never be easier than right now.
I do not plan to install an ECM just yet, but I can build a circuit to tell me if it is knocking. I sure won't hear it these days....
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: knock sensor placement [message #331263 is a reply to message #331262] |
Mon, 23 April 2018 07:56  |
DetroitDan
Messages: 51
Registered: March 2017
Location: Taylor, MI
Karma: 0
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On all of our new engines, they seem to mount the sensors near the main bearing "webbing" just below the heads, between the center two cylinders.
Dan Wallace
Detroit Metro
1974 Canyon Lands 260
Headers, 3.55, 16"
Floor plan 26-9
Honda 6010
Harrison 4-bag
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| Re: knock sensor placement [message #331264 is a reply to message #331262] |
Mon, 23 April 2018 08:08 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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On old engine designs they usually get added in the block valley between the rear 2 cylinders. I know torque spec is critical to freq response so not sure how you would "clamp" one on.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] knock sensor placement [message #331266 is a reply to message #331262] |
Mon, 23 April 2018 08:59 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Matt,
John Sharpe has his knock sensor screwed into the water jacket drain plug on the driver side of the engine.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Matt Colie
Sent: Monday, April 23, 2018 7:47 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] knock sensor placement
Does anybody have any experience with locating the knock sensor on a 455??
While the engine is still loose and all part parts are easily accessed (in different places), I am planning to install a knock
sensor as it will never
be easier than right now.
I do not plan to install an ECM just yet, but I can build a circuit to tell me if it is knocking. I sure won't hear it these
days....
Matt
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] knock sensor placement [message #331269 is a reply to message #331266] |
Mon, 23 April 2018 09:47 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Read here and all the picture links
http://gmcmotorhome.info/knock.html
On Mon, Apr 23, 2018 at 7:00 AM Rob Mueller wrote:
> Matt,
>
> John Sharpe has his knock sensor screwed into the water jacket drain plug
> on the driver side of the engine.
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Matt
> Colie
> Sent: Monday, April 23, 2018 7:47 AM
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] knock sensor placement
>
> Does anybody have any experience with locating the knock sensor on a 455??
>
> While the engine is still loose and all part parts are easily accessed (in
> different places), I am planning to install a knock
> sensor as it will never
> be easier than right now.
>
> I do not plan to install an ECM just yet, but I can build a circuit to
> tell me if it is knocking. I sure won't hear it these
> days....
>
> Matt
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] knock sensor placement [message #331274 is a reply to message #331266] |
Mon, 23 April 2018 10:55 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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USAussie wrote on Mon, 23 April 2018 08:59Matt,
John Sharpe has his knock sensor screwed into the water jacket drain plug on the driver side of the engine.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Matt Colie
Sent: Monday, April 23, 2018 7:47 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] knock sensor placement
Does anybody have any experience with locating the knock sensor on a 455??
While the engine is still loose and all part parts are easily accessed (in different places), I am planning to install a knock
sensor as it will never
be easier than right now.
I do not plan to install an ECM just yet, but I can build a circuit to tell me if it is knocking. I sure won't hear it these
days....
Matt
I was told to locate the knock sensor as far away from the heads and valve train as possible. The two suggested locations were the water jacket drain plug on the lower side of the engine or drill a hole in the front motor mount and mount it there.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] knock sensor placement [message #331282 is a reply to message #331271] |
Mon, 23 April 2018 13:44 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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Senior Member |
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emerystora wrote on Mon, 23 April 2018 11:22Matt
I have had one form or another of Tbi since 1993.
I have experimented with putting the sensor on the back of a head, in the cover over where the mechanical fuel pump goes, in the front motor mount and finally in the block drain hole on the passenger side of the engine.
The latter seems to work well and it has been there for several years now.
Emery Stora
That is where I put mine. Passenger side drain hole. Seems to work.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: [GMCnet] Thank You- knock sensor placement [message #331301 is a reply to message #331295] |
Mon, 23 April 2018 21:45 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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You’re on. What kind do you drink?
See you at Amana
Emery Stora
> On Apr 23, 2018, at 6:08 PM, Matt Colie wrote:
>
> Emery, Richard and KenB,
>
> That was exactly the information I was hoping to get. I am very grateful for Emery's as he had evaluated several locations.
>
> What most people are not aware of is that this can be different for any different engine design. As I have been in the development team of three new
> families and was part of doing this upgrade to five others, I an assure you that there is not one best that will work for all.
>
> You buy the beer, and I can tell those stories at any rally.
>
> Thank You Again
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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