[Supras] Thermostat Question Again!

[cthommes at adelphia.net]

Yeah, that's the first thing I thought, but he said it's brand new.

-Craig

---- Jeff Mohler <speedtoys.racing at gmail.com> wrote: 
> How is your fan clutch??
> 
> On 8/7/07, Charismatisch at aol.com <Charismatisch at aol.com> wrote:
> >
> > Hi there guys and gals,
> >
> > I am sorry to have triggered-off such an argument with my question,
> > however
> > my problem still remains the same.
> >
> > The radiator is brand new, so are all the gaskets (inclusive valve shafts
> > and HG). I did a full oil-change and coolant-change with the HG and
> > replaced the
> > plugs. The whole fan and clutch is also brand new.
> >
> > If I stay in town traffic, the temp gauge never goes above the  halfway
> > level
> > and the car runs beautifully and shows me a full radiator once it  cools
> > down
> > and I am able to open the rad.cap. The heating blows hot after about  a
> > minute already, indicating to me that the thermo is functional at
> > the  beginning.
> >
> > Once I take the car onto the Autobahn at 150+ mph and as long as it
> > is  being
> > cooled by the air from the front, the temp stays ok. When I come off the
> > Autobahn and reach the first stop sign, the temp slowly climbs into the
> > red and
> > comes back down a little when I drive off again. When I reach home, the
> > water
> > in  the expansion tank is gurgling. After spewing a little, the rad. shows
> > me
> > too  little water.
> >
> > Also, the main rubber pipe to the rad. at the top is often warm/hot and
> > has
> > some air in it, whereas the bottom rubber pipe from the rad. to the engine
> > is
> > cold or cooler. This would seem to indicate, that the flow of the water is
> > getting partially 'stuck' or 'slowed-down' somewhere, which may mean,
> > that  the
> > thermo is not functioning fully and creates a kind of 'tailback' or
> > 'congestion' in the system and is not allowing it to flow fast enough when
> > the  engine
> > is under duress.
> >
> > As a layman I would think that the thermo is closing fully when cold
> > (hence
> > the heating working soon and well at first), but not opening fully when
> > the
> > coolant/water mixture is hot. This wouldn't become apparent at slow
> > speeds/town
> > traffic, but under strain at 150 mph the thru-flow would not be sufficient
> > once  the car comes to a hot standstill.
> >
> > Your comments please??.
> >
> > Derek, 88T Automatic.
> >
> >
> >
> >
> >
> >
> >
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