[TR] Catalytic Converter for TR6?

[Malcolm]

I'm going to do some armchair engineering here, so please feel free to
research and refute anything I claim.

While you most certainly can retrofit the catalytic converter, it's not the
only requirement by far.  In order for the catalytic convert to do its job,
there needs to be sufficient oxygen in the exhaust to burn up (catalyze...)
the extra hydrocarbons.

The converter should be located close to the engine (so that it heats up)
and as far from the passengers as you can (because it gets hot).

If your mixture is too rich then the catalytic converter will overheat.  I
had an old Ford wagon that had that happen - the converter got bright red.
 Could be a fire hazard!

So, by my speculation, you should have at least an oxygen sensor and some
means of automatically adjusting the mixture to compensate / ensure that
the converter is working.  You may also need an air pump to feed fresh air
into the exhaust to make the converter work.

A fascinating problem, but is it worth the effort?  Also, consider that the
manufacture of your new catalytic converter may have involved the mining
and refinement of some heavy metals.  Will your driving and reduced
hydrocarbon output actually offset that?

Personally, I would get the mixture adjustment components working first -
and test your car after a good tune-up to determine how bad it really is.
 I suspect that you will affect your carbon footprint more with careful
driving and proper maintenance than you would by adding more hardware to
the system.

M


On Tue, Jun 3, 2014 at 8:55 AM, Martin Secrest <moira.secrest at verizon.net>
wrote:

> Bit a strange question: can one retrofit a cat converter to a 72 TR6?
>
> What are the requirements other than a place for it under the chassis?
>
> Not asking because of any legal requirement, just want to reduce my carbon
> footprint.
>
> Martin Secrest
>
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