[Healeys] Heathkit CI-1080 exhaust gas analyzer

[Alex]

Jonas, I use an old Heathkit CI-1080 analyzer, which you can often find for 
sale on eBay, although they seem to fetch an inordinately high price (more 
than they're worth, IMHO).

The CI-1080 uses a temperature probe that's placed in the exhaust pipe, and 
the readings are displayed on a large analog moving-coil meter that works in 
a balanced Wheatstone bridge circuit. This lets you read combustion 
efficiency and air-fuel ratio directly.  The analog meter is easy to watch 
and interpret, as opposed to analyzers that use digital readouts.

Because SU carbs can only be "tuned" at the idle, the Heathkit works really 
well for setting the mixture and checking it from time to time. I use the 
instrument on my BT7 as well as an MG TC.

I used to work for Heathkit Co., and it sold kits, so I know that if you 
obtain one of these it is possible that it would be poorly assembled. 
However, myself and my pal Bob (who owns an MG TD and also has a CI-1080) 
find them cost effective and useful. They're easy to repair, too, if you get 
one that has poor soldering on its circuit board.

== Alex in Maine
     "The Blue Mainie," 1960 Austin Healey 3000 BT7
     "Conkling," 1946 M.G. TC #1321
     Former owner 1957 A-H 100-6, 1967 A-H BJ8,
     1965 MG Midget
     http://home.roadrunner.com/~alexmm


----- Original Message ----- 
From: "Jonas Payne" <JPayne at ThorCon.net>
To: <Healeys at autox.team.net>
Sent: Sunday, April 15, 2012 6:39 PM
Subject: Re: [Healeys] Britfest


> My club (BACLV.org) is considering investing in an exhaust gas analyzer.
>
> It is my understanding that some of these units can be utilized while the 
> car
> is in motion, so that we can check gasses under load while underway, thus
> giving a much better indication of carb tune than at idle or when testing
> under no load at various RPM's.
>
> Anybody have any familiarity with these types of tools that could make
> recommendations as to both the usefulness of this and / or which units are 
> any
> good?
>
>
> Jonas Payne
> PBR
> Cell:   (702) 358-5084
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