Bob made some good suggestions, you may know this already, but you can check
your thermostat by putting it in a pan full of water and heating it up, if
you have a candy or baking thermometer you can see at what temp it opens, if
you don't you can still get a good idea of function, should open before the
water boils at 212 F, assuming you are running a 160 or 180 degree F
thermostat.
Sounds like your problem is more extreme than that, but I put some Redline
"water wetter" in the radiator and it seemed to drop them temp by about 5-10
F on a hot day.
Greg Lemon
54 BN1
----- Original Message -----
From: "Bob Spidell" <bspidell@comcast.net>
To: <healeys@autox.team.net>
Sent: Tuesday, June 14, 2005 10:44 PM
Subject: Re: running Hot
> Leonard,
>
>
> Have you checked:
>
> - timing (retarded can cause overtemp)
> - mixture (ditto too lean)
> - radiator
> - block internals (i.e. rust)
> - thermostat
>
> The pump would be the last thing I'd suspect; there's nothing to them and
when they
> fail they leak or the bearing goes, but they still pump (unless they
seize).
>
> A balky thermostat can cause these symptoms. I've had trouble finding
reliable
> thermostats for both my Healey and my Ranger. After that, if you haven't
had your
> radiator out and inspected and rodded in a while that could be the
culprit. Excessive
> rust and/or "boiler scale" in the block can cause overheating too,
>
>
> bs
> ***************************************************************
> Bob Spidell San Jose, CA bspidell@comcast.net
> '67 Austin-Healey 3000 '56 Austin-Healey 100M
> ***************************************************************
>
> Subject: running Hot
>
>
> >I seem to not be able to keep my car at a reasonable temperature. I tried
a
> > Texas cooler which seemed to help a little but I started to see evidence
of
> > the fan hitting the radiator so I just installed an electric fan. I find
> > that it doesn't come on until the temp guage reads over 200. I also
> > installed a manual over ride so I could activate the fan as soon as the
temp
> > starts to climb. The fan seems to push quite a bit of air and
definitely in
> > the correct direction. Unfortunately I do not see the temperature
coming
> > down. I am starting to wonder if my water pump is circulating the water.
It
> > is a fairly new pump and I seem to think that the old one kept the
> > temperature down a little better. Does anyone know how to determine if
the
> > pump is pumping a sufficient amount of water without removing it from
the
> > car. Or does anyone have any other suggestions.
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