Re: Spiral HE's? (was: type3-d Digest V2004 #784)

[Constantino Tobio <ctobio@gmail.com>]

Hmm. I would imagine that the logic behind spiraling the heat sinks is
that it makes the effective distance that the air passing over there
longer, thus heating up the air more because it's traveling over the
HE for a longer time. It would be a way of addressing passenger
heating concerns without having to go into the whole gasoline heater
business.

It's not a bad idea, actually. I'm surprised VW didn't do that all the
time. I don't see an obvious disadvantage. Maybe cooling the exhaust
too much on leaving the engine is bad? I don't know.


On Fri, 31 Dec 2004 17:05:32 -0800, Toby Erkson
<air_cooled_nut@pobox.com> wrote:
> A spiral type sounds VERY odd, indeed!  I'd like to see that as well.
> It sounds like a bad design, anyway.
> 
> Stock heat exchangers on my engine (2007cc, 8:1 compression) really
> caused heat build-up.  1.5" J-tubes fixed the problem *noticeably*.
> 
>     Toby Erkson  --  air_cooled_nut@pobox.com
>     '72 VW Squareback, '95 VW Jetta, '81 Gold Wing, '73 Porsche 914
>     http://www.icbm.org/
>     Portland, Oregon
> 
> >> Ive never seen the spiral type, if they even exist??
> >>
> >
> > You could call CIP,if you're interested.Though it seems as though
> > you've already made up your mind.
> > Whatever.
> 
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