first off the fins on the heat exchanger's front side have a lot to do with
proper air flow through the heat exchanger. you might do well to sit one
night with a fin comb or some very fine (like modeling tools) needle nose
pliers and straighten the fins enough to allow air to properly pass thriugh
the core's fins.
next. the rise in temperature after shut down is normal. the engine has
heat stredd up that after the cooling system stops circulating it can not
rid itself of. that is where you will experience the rise in temperature
after shut down. if you improve the heat exchanger's ability to dissipate
heat you may be able to reduce operating temperature wich would affect the
heat soak spike you experience after shut down.
you failed to mention the thermostat's opening temperature. i'd reccomend
a 160 degree in high heat climates for a quicker opening temperature.
chuck.
and remember..a black radiator is far superior in it's ability to exchange
heat to any other color...or polished. and try using the sticky stuff from
the radiator shop! some...read that most paints act like an insulator
....not condusive to dissapation of heat.!! hey! i'm not a thermal
physist....but i did sleep at a holiday inn express last night!
lol!!!!!!!!!
----- Original Message -----
From "Tracey Converse" <converse at centurytel.net>
To: <spridgets@autox.team.net>
Sent: Monday, August 20, 2001 9:02 PM
Subject: 1975 Midget Trouble...HELP
> Okay gang...I've got a problem and can't figure it out. Here goes...my
> precious, little darling AKA The WENCH...is overheating. (Granted I live
in
> Arkansas and temp is pushing the mid-90's.) So far, here's what's been
> replaced...
>
> Thermostat
> Fan Clutch
> All hoses are new
> The Radiator has been flushed and seems to be clear, however, the fins on
the
> front are in terrible shape.
> The freeze plugs have been pulled out of the motor and a handful of sand
> flushed out.
> The temperature does fine now going down the road but skyrockets quickly w
hen
> the motor is turned off. Even idling doesn't seem to cause the rise in
> heat...but once the motor is shut off the temp goes from normal to over
225
> degrees.
> Luckily, I haven't blown the head...yet. There are no fluid leaks and I'm
not
> losing any water. The motor is still strong and I hate the thought of
talking
> my husband into paying for a rebuild.
> Ideas???? I need a miracle here in Arkansas!
> Tracey
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