Agreed, Jan, and a generally good tip for the list.
In my case I was going thru this thermo-trauma with a firm that had rebuilt
my engine, so they were doing the replacing . The engine concerned (a V8
Holden) is a bit known for its marginal cooling and sensitivity to the
'right' thermostat.
I nearly got to the point of boring a 1/8 th hole thru the thermo, which I
once did with a great deal of success on a BMW 2002. It never overheated
again, but always warmed up enough. This trick was well known in the BMW
club back in the '80s, but I can't recommend it for other makes.
Cheers
Vic
----- Original Message -----
From: "Jan Eyerman" <jan.eyerman@usa.net>
To: "Vic Hughes" <v.hughes@austarmetro.com.au>; "Rob Taylor"
<alpine@toucantradingcompany.com>; "Alpine mailing list"
<alpines@autox.team.net>
Sent: Monday, June 03, 2002 11:51 PM
Subject: Re: [Re: Too Hot!!]
> 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")
|