I have a radiator with a modern core in my BJ8. It is really the only thing
I've ever found that would keep the temperature down in the cooling system.
I also have a NOS AC sleeved thermostat (thanks, Kees!) rated at 187 deg. F.
After the installation of the radiator, my car routinely has run between 170
and 180 on the road unless it's a really hot day or in a traffic backup and
it might then go 190 - 200 for a short period but drops down quickly with
more airflow through the radiator.
With the sleeved thermostat, I can also see the thing function. For about
the first 50 miles, the temp needle will move toward 190 and as soon as it
gets there it will drop back to about 160. It continues cycling until a
stable temperature is reached, typically 170 - 180. I guess the modern core
can cool sufficiently to keep the thermostat mostly closed under coolish
ambient conditions.
Steve Byers
HBJ8L/36666
BJ8 Registry
AHCA Delegate at Large
Havelock, NC USA
-----Original Message-----
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Bob
Spidell
Sent: Tuesday, October 14, 2014 11:15 AM
To: Steven Kingsbury
Cc: healeys
Subject: Re: [Healeys] Aluminum Radiator
Cool :) FWIW, that's pretty much how my BJ8 behaves with a stock radiator
and Texas Cooler fan. Are you running a stock BN1 fan?
On a side note, does anyone know why our cars routinely run under the
thermostat set point? For example, I have a 180degF thermostat in my BJ8,
and on not-hot days on the freeway it may run around 160degF. Under warmer
conditions with more of a load it'll hold 180 until stuck in traffic, etc.
then goes up 10-20 degrees. The thermostat should stay closed until reaching
the set point--e.g. 180--then open and maintain that temperature until the
the radiator can no longer, well, radiate all the heat produced by the
engine. Is it possible our engines are being air-cooled enough to stay under
the thermostat set point under benign temp and load conditions?
Bob
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