I'm not sure if this had anything to do with it, but I think it worked on my
car because of the way I mounted the electric fan. I mounted it between
the radiator and the engine, pulling air through the rad and onto the
engine. Most I've seen mount the fan in front of the radiator. Maybe the
cool air running across the cast iron was enough to cool it down? Not
likely, but in my case at least it seemed to work.
Now that I've thought about it a little more, another reason for the temp to
skyrocket at shutdown is low coolant level. There's just enough in the
system to keep it cool when running, but not quite enough to "wet" the block
when the coolant isn't circulating to transfer heat. Coolant will absorb
the heat much better than air. (Volkwagons and Porsches not
withstanding...<grin>)
Greg Gowins
'69 Sprite
Dublin, CA
----- Original Message -----
From "Charles F. Christ" <cfchrist at earthlink.net>
To: "Tracey Converse" <converse@centurytel.net>; <spridgets@autox.team.net>
Sent: Monday, August 20, 2001 10:42 AM
Subject: Re: 1975 Midget Trouble...HELP
> btw, the electric fan idea is neat but does nothing to solve the heat soak
> after shut down. it only cools the coolant in the rad and what little
> radiant heat that comes from the engine's coolant. the running fan is
only
> really effective is there was an electric water pump running after shut
down
> in conjunction with the electric fan. then there would be effective
cooling
> of the system after shut down without the engine running to produce any
> aditional heat. if that was a desireable end result.
>
> there is 1 more thing to consider. the water pump impeller if of
> anything but plastic or some similar derivitave could be missing bits /
> pieces, or whole impeller fins. it is a long shot but i have seen this
in
> numerous types of vehicles. done evrything that should result in a much
> cooler running vehicle but no results. turned out to be corroded water
> pump impeller.
>
> in adition remember too much timing advance also results in hotter than
> normal running temps. it really gets the best performance bumping up
> timing but it also creats a hotter running engine too. possibly a tad of
> sacrifice in timing may help too? you are right at the verge of running
too
> hot while operating the car. some very minor adjustments in mixture and
> timing may give a very positive reduction in the "normal" operating
> temperature.
>
> chuck
> pay no attention to the man behind the curtain............(wiz. of oz)
> if all else fails....try watter wetter! ya did evrything else ...right?
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