Re: Knock sensor selection for 383 SBC

["Programmer" <nwester@eidnet.org>]

Actually, that's a great way to "tune" the sensor. Amount of torque, and
teflon tape. Some are way too sensitive--just add tape and reduce torque to
80 -150 in/lbs.

-----Original Message-----
From: Mark Romans (ICQ#66838770) <romans@pacbell.net>
To: gmecm@diy-efi.org <gmecm@diy-efi.org>
Date: April 6, 2000 9:18 PM
Subject: Re: Knock sensor selection for 383 SBC


>Teflon tape works fine.  I don't actually know if it even dampens the
signal
>any.  Mine is still very sensitive.  The knock sensor picks up detonation
>before I can hear it.
>Mark
>-----Original Message-----
>From: Jim Wilson <Wilson.James4@worldnet.att.net>
>To: gmecm@diy-efi.org <gmecm@diy-efi.org>
>Date: Wednesday, April 05, 2000 11:04 PM
>Subject: Re: Knock sensor selection for 383 SBC
>
>
>>
>>    Mark,
>>
>>  How well does the teflon tape work on the knock sensor? Will it still be
>>sensitive enough to pick up KR before it becomes audible?
>>
>>                          Thanks, Jim
>>
>>
>>
>>
>>
>>-----Original Message-----
>>From: Mark Romans (ICQ#66838770) <romans@pacbell.net>
>>To: gmecm@diy-efi.org <gmecm@diy-efi.org>
>>Date: Wednesday, April 05, 2000 8:39 PM
>>Subject: Re: Knock sensor selection for 383 SBC
>>
>>
>>Hi Dave:  Just use a 350 vet sensor, install it with about 3 wraps of
>teflon
>>tape on the threads to stock torque, it'll be fine.  Use the teflon tape
>>because with roller rockers and added bore clearance it will probably be a
>>bit noisier than stock.  Just keep an eye on the knock with diacom and add
>>spark where there is no knock and take it out where there is (In the map).
>>The best tuning aid is to go to wot at about 600 rpm and tune for no
>>detonation all the way to redline.  Then you can work on the part throttle
>>stuff.
>>Mark
>>-----Original Message-----
>>From: Dave Zug <dzug@delanet.com>
>>To: gmecm@diy-efi.org <gmecm@diy-efi.org>
>>Date: Wednesday, April 05, 2000 7:26 PM
>>Subject: Knock sensor selection for 383 SBC
>>
>>
>>>It's easy to pick a knock sensor when going from a 305 to a 350 or 355,
>but
>>>what about a 383?  I was planning on using the stock 350 sensor of
coarse,
>>>and if I even found some outfit selling a sensor described as "for 383
>use"
>>>I would be skeptical.  Since the bore is identical, (+.0305") am I wrong
>in
>>>assuming the 350 sensor is absolutely correct? Do the aluminum heads
>>>(replacing stock heavies) sitting on top affect the signature of a knock
>>>event enough that a different sensor should be used?  should I find a
>vette
>>>sensor and (net-res?) from an alum-headed 350?
>>>
>>>This is a (personal car) '165 MAF (yea, don't say it)  -AUTO 383
>>>application.
>>>
>>>thx for any thoughts.
>>>
>>>
>>>
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