Hi Richard.

Interesting about the Porsche design. Seems I might be
on the right track in some ways, i.e. not "containing"
heat in heat exchangers (as in stock 2L design).
Thinking about it more, heat generated at exhaust
pipes probably doesn't contribute nearly as much to
overall engine temps as I had thought. But every
little bit counts. And yes, in my case the seal on
perimeter of engine isn't in great shape. And as you
say, it should be. Something I've become aware of
through the archives.

btw,

don't know which link you used, and if you were able
to see pics of mod, but this link to my new web site
works:

http://members.shaw.ca/tubanick

you will find pics there.

Cheers.

Neil.

--- Richard A Jones <jones@colorado.edu> wrote:

> Neil:
>
> In the original Porsche 911s, the heater flaps
> either sent the hot air up to the passengers or
> just dumped it there right forward of the engine
> at the heater jct boxes.  So routing (most of) the
> hot air to behind the engine should be fine.
>
> The engine cooling is from the fan pushing
> cooler air from the engine compartment over the
> engine fins.  Hence the importance of the seal
> around the perimeter of the engine; if that seal
> isn't good, the hot air being dumped underneath
> will come up into the engine compartment and
> screw up your cooling.  Ask me how I know.  ;-)
>
>                       Richard A Jones
>                       Boulder, Colorado
>

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