Knock Question

[Dave Balfour]

ever consider a color tune spark plug dave balfour
-----Original Message-----
From: rbraun at mail.enter.net <rbraun at mail.enter.net>
To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, March 15, 1998 11:40 AM
Subject: Re: Knock Question


I believe it was in Design News Magazine I saw an article on spark
plugs with fiber optic probes in them, it was like 8 of them around
the circumference of the outer shell, with the proper instruments you
can watch flame shape and travel.  All this without any extra windows
or ports into the chamber which may alter the burn characteristics.
  I don't save the back issues so I can't find it for you, but a good
tech library may have them.

If this helps, it may be expensive.

>
> Now my engine builder is a little reluctant to cut a hole through
the
> cooling jacket and put a quartz window in for an optical detector,
and I am
> rather reluctant to undertake a total redesign of my electronic
ignition
> system.  Which leaves sticking a probe into the exhaust and
measuring the
> amount of ionization.
>
Randy Braun     rbraun at enter.net
91  GTA
82 Firebird