Richard,
The main problem in my case is, as you mentioned, the stop-start
traffic. And the hot summer. I think, may be I am not right, that
90-95F and a half an hour long traffic jam could be dangerous even for a
properly set-up spitfire. I live in the center of the capital, so I must
cross the town full of traffic jams, when I use the car and the summer
is very hot. So that is why I "absolutely need some extra cooling" I
just want to be at least 99% sure that my car will not overheat in any
possible cases.
I see four main options:
1. Electric fan
2. 22" radiator
3. 22" radiator+ electric fan
4. Oil cooler
I think that for my case (mainly stop-start traffic) the electric fan
could have big advantages. It is self adjusting by the thermostatic
switch and very efficient even in a stopped car.
What do you think?
peter
-----Original Message-----
From: Richard Gosling [mailto:richard.gosling@exprogroup.com]
Sent: Monday, December 30, 2002 12:25 PM
To: Piter Bsna; Dave Chu; spitfires@autox.team.net; Jeff McNeal
Subject: RE: rimmers parts
Peter,
I have a feeling (partly derived from reading of Jeff's attempts to fit
his
electric fan) that the principle problem is the water pump, but I
believe
that some 1500 owners have fitted pullers successfully (not just those
late
US models with the angled radiators), so maybe a change of water pump
for a
later model might help?
Failing that, fitting the wider radiator allowing a greater offset, as
Dave
has done, seems a good solution. I would add that the fan is more
efficient
if the area not covered by the fan has a shroud, to make sure that the
air
pulled by the fan is through the radiator and not from around the edges.
My
wife's Audi has a smart design where the shround consists of a grid with
pieces of rubber attached at their top edge only, so that when the car
is
moving at speed the rubber flaps up out of the way allowing air to pass
through the full radiator, but when the car is stationary the flaps fall
back down and prevent air being sucked back through them.
If you really can't get it in, then the fan should work as a pusher well
enough to allow you to get rid of the fan on the water pump. In fact
I've
heard say that having two fans is more of an obstruction than having
just
one. The electric motor is an obstruction whether the fan is a pusher
or a
puller. I've heard enough hearsay that a puller is better as a pusher
to
believe it, although I'm not entirely sure why.
Finally, why are you so sure that you "absolutely need some additional
cooling"? Unless you spend a lot of time in stop-start traffic, or live
somewhere VERY hot (sorry, I forgot where you come from), a properly
set-up
Spitfire should not overheat. If it is overheating, you have another
problem. Fitting an electric fan is a patch, not a fix, for an
overheating
problem.
Richard & Daffy
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