Re: [DML] catalytic heat shield

[Martin Gutkowski <webmaster@xxxx>]

A catalyic converter works by allowing the escaping gasses to get super-hot while being
filtered through a catalyst to remove the nasty components in the gasses. Remember
chemistry at school? Heating a substance with a catalyst causing a reaction that entirely
unaffects the catalyst.... or something like that :-)

Anyway, the catalyst works by getting hot. Replacing the cat with a simple pipe will stop
it getting as hot, but a heat shield to protect the epoxy is still probably a good idea
(certainly won't do any harm). Epoxy has a superb heat resistance, but 20 year old epoxy
which was layered too thick originally (as some accounts state) is probably more likely
to crack if constantly being heated and cooled.

Martin
#1458 - drove her home tonight.

iznodmad@xxxx wrote:

> Here's another question for you technical minded guys: Is there a
> temperature difference between a cat that actually has something in it vs a
> cat that has been hollowed out? Or is it that no matter what, a cat (hollow
> or not) may still damage surrounding parts b/c of generated heat? Just
> wondering.....
>
> Regards,
> Darren Decker
> #5000