sparkplug reading - Color Tune

[mike mager]

Carl Summers asked: (complete quotation below)

>Hi, Whats a Color Tune???

Hi, Carl, this may be redundant, but the Color Tune is a weird little thing 
that you can screw into a sparkplug hole, and it works both as a window (to 
see the combustion color) and as a spark plug.  You can adjust your 
combustion color (AFR) as appropriate, and as several have pointed out, a 
dynamometer would be a handy 'accessory' for higher loadings;  the Color 
Tune is made for tuning only, it has 'no' heat range, and is not meant for 
high temperature or high pressure for over "2-3 minutes", they say.

Maybe just a toy, but I wanted one.

Mike


>From: Carl Summers <InTech at writeme.com>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: RE: sparkplug reading - Color Tune
>Date: Thu, 16 Mar 2000 10:23:28 -0800
>
>Hi, Whats a Color Tune???
>-Carl Summers
>
>
>-----Original Message-----
>From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
>Behalf Of mike mager
>Sent: Thursday, March 16, 2000 9:21 AM
>To: diy_efi at diy-efi.org
>Subject: sparkplug reading - Color Tune
>
>
>The "New Color Tune" is here!
>
>I was greatly relieved to find that TRF (The Roadster Factory) had the 
>Color Tune in stock (not out of production);  I got mine (with no shipping 
>delay!) for about 50USD.
>
>Do any of you have experience with Color Tune?  David Vizard says that 
>sparkplug reading is a very unreliable way of setting mixture strength;  he 
>likes to use an EGO and a Color Tune.  I won't just automatically believe 
>everything that I read, but his suggestion does at least pass a first check 
>of reasonableness.
>
>Mike
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