Plug cuts

[Bruce]

Just call in sick <g>.
Tell em it's a training seminar.
If they ask for what tellem it's classified
Bruce

From: "Bob Wooten" <r71chevy at earthlink.net>
Subject: RE: Plug cuts
> That's kinda what I figured, it is hard enough to see in a plug let alone
be
> able to take a picture of one.
> Ohio is a long way from San Diego, maybe w/enough heads up I can schedule
a
> business trip around the next one in the spring (or whenever you have it).
> BW

> Behalf Of Bruce
> Subject: Re: Plug cuts
> The best series of plug photos were in a series of articles in Circle
Track
> and Racing Technology about 5 years ago.
> It's extremely hard to get enough magnification, and still have something
> clear enough to print.
> Kinda makes gettin to the EFI POWWOW worth it just for understanding what
> your seeing when you look atta plug.
> Bruce

> From: "Bob Wooten" <r71chevy at earthlink.net>
> Subject: RE: Plug cuts
> > Thanks for all the help guys.  if anyone runs into a Web site or some
> > pictures that show all these different things (good bad or indifferent)
I
> > would appreciate it.
> > BW
>
> > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > Behalf Of Bruce
> > Subject: Re: Plug cuts
> > From: "Bob Wooten" <r71chevy at earthlink.net>
> > Subject: Plug cuts
> > > I know that we have been down this road before, but I have a few more
> > > specific questions.  I went back to the NGK web site today
> > > (http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp)
to
> > take
> > > a look @ some of the pictures that they have there to see if I could
see
> > > Bruce's "fly turds" (I think that was the term that he/you used), in
> > regards
> > > to what the plug looked like for detonation.  about the closest that
> they
> > > had was what they called "overheating".  Is this similar to what I
would
> > > expect to see when I see detonation happening?
> >
> > In the caption they're looking at the glossiness as an indication of the
> > overheating, well, since the plug is running WAY TOO hot one might
expect
> to
> > see traces of detonation, and yes those specks are serious enough to
> > indication that it was in fact detonationg, in a serious manner.  Less
> > severe case will have smaller and fewer of the specks.  With a 3x or
more
> > power magnifier they get real easy to see, and they are generally little
> > spheres of material.
> >
> > > does anyone have a picture of the "fire ring", & a description of
where
> it
> > > is (high or low) & which is an indication of what?
> >
> > The Ring or band is an indication of timing.
> > Too advanced of timing, and the flame is over before leaving any residue
> on
> > the porclean.  Too retarded and the band is way up inside, and where the
> > porclean meets the housing.   Too hot of plug, and it runs too hot for
> much
> > of an ash deposit to form.
> >
> > Band reading is for real hotrods then stockers.   The oems are so
> concerned
> > with 100K ish tune up intervals, they are hard to read (the bands).
> > Also, some brews of gas now are very clean burning.
> > Some of the racing fuel suppliers are mentioning specifically now that
> they
> > add additives, and what to look for.
> >
> > If your plugs are showing any pink hue to them my advise is to change
> brands
> > of fuel, or change plugs real often.
> > Bruce
> >
> > >
> > > thanks mucho
> > >
> > > Bob Wooten
> > > r71chevy at earthlink.net
> > > www.r71camaro.homestead.com


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