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[Healeys] Gunson Colortune

Subject: [Healeys] Gunson Colortune
From: coudesluijs at chello.nl (Oudesluys)
Date: Thu, 17 Nov 2011 09:13:28 +0100
References: <20111117055405.20161.qmail@hoster902.com> <CA+QDXmBB20eOOpM=TQSAnAELWPNshi5OC-14zBzAaxp5sbBXSw@mail.gmail.com> <4EC4B336.3060907@chello.nl> <CA+QDXmCFVBrrPmkb87F4vttTZU5x6UsY8W7v=tbXTCcSuObDzQ@mail.gmail.com>
That will indeed help but needs an adaptor on each downpipe. But it 
still would not work on a tri-carb.
Kees Oudesluijs
NL


Op 17-11-2011 8:18, Austin Healey schreef:
> The device I use is driven by a wideband lambda sensor, which can be 
> put into the downpipes. We have two on the Healey, soo it gives 
> spot-on measurements for each carbs. Some devices can even handle two 
> wideband sensors at one time, soo You can adjust the carbs 
> simultanously. Not mine unfortunatly, but I will update to a 
> twin-sensor soon.
> The main profit of the gas analizer is that You can see the mixture 
> under real driving conditions: under load, decelarating, hard 
> acceleration etc.
>
> Gergo
>
> 2011/11/17 Oudesluys <coudesluijs at chello.nl 
> <mailto:coudesluijs at chello.nl>>
>
>     Problem with exhaust gas analysing equipment with multi carb
>     engines is that you cannot tune the carbs individually, you do not
>     know which carb to work on and when it is set properly. One can be
>     a tad to rich while the other is lean resulting in an overall
>     acceptable exhaust gas result.
>     Kees Oudesluijs
>     NL
>
>     Op 17-11-2011 7:31, Austin Healey schreef:
>
>         If You can afford, buy a proper wide brand oxigen sensor and
>         analizer
>         device. I use an Innovate Motorsport LM2, and it is easy to
>         use, and will
>         make carb setting spot on. You can log it, map it, or use it
>         directy.
>
>         Gergo
>
>         2011/11/17 Steve B. Gerow<steveg at abrazosdata.com
>         <mailto:steveg at abrazosdata.com>>
>
>             I bought 2 of them for #2&  5 sparkplugs.
>
>
>             My experience was that when you adjust the mixture to the
>             "bunsen" blue
>             per the instructions, it's way too lean.
>             When the mixture is adjusted to run properly, the
>             Colortunes show all the
>             way rich yellow on the left side of the scale.
>
>             Your mileage may vary.
>
>             --
>             Steve Gerow
>             Altadena, CA
>             BN6
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