Per,
Just to make it clear, the three carb model also has a balance pipe to connect
all three intakes, but its much smaller in diameter.
But the imperfections on the Austin-Healey engine/carburetter/exhaust design
do not allow a perfect adjustment with a wideband lambda sensor. There is also
a high dependency on the climate, temperature, altitude.
For a good adjustment of the mixture two colortune plugs or with 3carbs 3
colortune plugs will do the job.
Josef Eckert
Germany
-----Urspr|ngliche Nachricht-----
Von: healeys-bounces at autox.team.net [mailto:healeys-bounces at
autox.team.net] Im
Auftrag von Per Schoerner
Gesendet: Donnerstag, 17. November 2011 11:21
An: healeys at autox.team.net
Betreff: Re: [Healeys] Gunson Colortune
Gergo
You are forgetting that the two carburettors are mounted on a common intake
manifold, so both carbs feed all 6 cylinders. I theory, and I think also in
practice, you would be able to run the engine with only one carburettor. It
will not run very well but still be running on all cylinders. As someone
mentioned, the three carb model doesn't have this common intake.
Per in Sweden
Austin Healey skrev 2011-11-17 08:18:
> 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
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