A pot of water, a stove and a cooking thermometer bought at a "dollar" store
is the best way to test a thermostat. Put the thermostat in teh pot of water
on teh stove and heat-watch the thermometer and thermostat and see what
temperature it begins to open at and what temperature it is fully open at.
I sometimes put several thermostats in the pot together and see if they work
in unison.
Jan
"Vic Hughes" <v.hughes@austarmetro.com.au> wrote:
Rob,
The key here seems to be that you are loosing coolant. As you have been
working on the cooling system, the first thing I'd do is check/tighten all
the hose clamps to ensure they're not leaking under pressure/when warm. It
can be a small leak but the consequent drop in pressure can cause
overheating. It's also worth checking for splits or holes in the hoses,
your work may have put extra pressure on an old hose.
With a blown head gasket coolant can escape into an oil gallery or a
compression area. The former will show up quickly as a creamy deposit in
the oil - look at the underside of the oil filler cap. The latter may be
detected by a compression test (showing one cylinder with much lower
compression than others, or by unusual quantities of water in the exhaust
(as Fred Levitt says).
I'd also try swapping back the old thermostat - I once had to try 3 before I
got one that worked ok.
Hope you find it
Vic
----- Original Message -----
From: "Rob Taylor" <alpine@toucantradingcompany.com>
To: "Alpine mailing list" <alpines@autox.team.net>
Sent: Saturday, June 01, 2002 7:14 PM
Subject: Too Hot!!
> Alpiners,
>
> My wife and I would like to go the Invasion II - but I can't get my '66 SV
> to be cool.
>
> Currently, I'm having some overheating problems.
> No previous overheating problems, of course, till I did a little
> preventative maintenance - new water pump, thermo, had the radiator
flushed
> and put on an electric fan. I swear, I had no problems for 9 years until
I
> tried to get ahead of it. I've been told it could be a blown head gasket -
> but, I don't know, seems a bit coincidental to me.
>
> symptoms:
> Runs great for a while (30-45 minutes) and then losses coolant - but no
> overflow that I can see.
>
> Can anyone share some advise that might put us on the road to Ohio?
>
> Thanks,
>
> Rob (Alpiner formerly known as "Oaxacarob")
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