knock sensor placement

[Matt Colie]

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 - '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

 

[DetroitDan]

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

 

[john r. lebetski]

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

 

[robert mueller]

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] On Behalf Of Matt Colie
Sent: Monday, April 23, 2018 7:47 AM
To: gmclist
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

 

[Gene Fisher]

Read here and all the picture links

http://bdub.net/gmcmotorhome.info/knock.html

> 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] On Behalf Of Matt
> Colie
> Sent: Monday, April 23, 2018 7:47 AM
> To: gmclist
> 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://bdub.net/gmcmotorhome.info/
Alternator Protection Cable
http://bdub.net/gmcmotorhome.info/APC.html

 

[emerystora]

Matt
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
>>
>>
>> -----Original Message-----
>> From: Gmclist [mailto:gmclist-bounces] On Behalf Of Matt
>> Colie
>> Sent: Monday, April 23, 2018 7:47 AM
>> To: gmclist
>> 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
>>

 

[Ken B]

> 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] On Behalf Of Matt Colie
> Sent: Monday, April 23, 2018 7:47 AM
> To: gmclist
> 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

 

[RJW]

> Matt
> 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


Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator, Manny Tranny etc.