[s-cars] Plug gap

[Doyt W. Echelberger]

Bob.....Please move my decimal point one place to the left.  I gave you the 
only information I had about plug gap, based on some correspondence about 
1996. It does provide a data point for comparing your measurement of 0.017 
inches.

Here is a copy of the exchange on that subject in 1996:
    * To: <mailto:gpowell at acacianet.com>gpowell at acacianet.com
    * Subject: RE: Finally fixed it!
    * From: <mailto:mallick at orion.crd.ge.com>mallick at orion.crd.ge.com (John 
Mallick)
    * Date: Tue, 8 Oct 96 09:35:04 EDT
    * Cc: <mailto:quattro at coimbra.ans.net>quattro at coimbra.ans.net
    * In-Reply-To: 
<<http://www.audifans.com/archives/1996/10/msg00993.html>01BBB4EA.923AE1E0 at glen> 
(message from glen on Tue, 8 Oct 1996 07:29:51 -0400)
    * Sender: 
<mailto:owner%2Dquattro at coimbra.ans.net>owner-quattro at coimbra.ans.net

glen> Well, I pulled out the NGK plugs this weekend and put in
     glen> brand new Bosch F5DPOR plugs and my 200q can finally hit
     glen> full boost without bucking and stuttering.  Thanks to
     glen> AudiDudi for pointing me in that direction.

     glen> John Mallick '91 200q

     glen> Cool. I get a sort-of 'roughness' or even almost a misfire
     glen> when I run over 15-17 PSI in the ur-q. It is not
     glen> detonation or lean-out. Could these F5PDOR plug$ be the
     glen> solution to running ever higher levels of  boost?

     glen> -glen

They're not "magic" plugs by any means.  I assume that the electrodes
are platinum (substantial pieces, not whiskers), and the gap is to the
side of the center electrode.  Gap is about 0.028".  The old NGK's I
took out had been worn to about 0.048"; that was probably the cause of
the misfire.

John





 >>>>>>>>>>>>>>>>>>>>>
At 08:52 AM 6/20/2005, you wrote:
>Thanks, Doyt.  Guess what I'll be doing within the next hour.  ;-)
>
>At 07:49 AM 6/20/2005, you wrote:
>
>>*This message was transferred with a trial version of CommuniGate(tm) Pro*
>>0.28 to 0.35 inches
>>
>>
>>
>> >>>>>>>>>>>>>>>>>>>>>>>>>>..
>>At 06:33 AM 6/20/2005, you wrote:
>>
>>>Hi Y'all,
>>>
>>>I thought I'd check the gap for the F5PDOR plugs and readjust if 
>>>necessary.  Well, in order to do that one needs information about the 
>>>proper gap.  Guess what -  Bentley, the Family Album, and the owner's 
>>>manual (none of them) appear to contain gap settings information.  At 
>>>least I was unable to find it anywhere.
>>>
>>>The present plugs (soon to be replaced) show virtually identical gaps of 
>>>0.017 inches (or ~0.043 mm) but this looks to be a bit close.  Center 
>>>insulators are uniformly barely off-white and look good.
>>>
>>>Can someone provide a proper plug gap value?
>>>
>>>
>>>Bob
>>>Http://Chips-Ur-S.com
>>>_
>>
>>
>>
>>
>>
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>
>
>Bob
>Http://Chips-Ur-S.com
>
>
>
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>8:52:45 AM ET - 6/20/2005