A reminder from past discussions: The Robert Shaw thermostat is NOT the
proper sleeved thermostat. The diameter of the sleeve is too small. It
will not cover the hole in the head when open. The sleeve is 1 9/16 inches
in diameter and the opening in the engine is 1 15/16 inches leaving a gap
of 3/16 inch between sleeve and block (that's 3/16 all around in case you
are questioning my math). Whether open or closed, the sleeve on the Robert
Shaw never 'opens' or 'closes the small hole in the head.
(The Other) Len
Vacaville, CA
1967 3000 MKIII HBJ8L39031
> [Original Message]
> From: Bob Spidell <bspidell@pacbell.net>
> To: Alan Schultz <alan@andysnet.net>; Rich C <richchrysler@quickclic.net>
> Cc: John Snyder <helyjohn@cablespeed.com>; <healeys@autox.team.net>
> Date: 7/2/2004 6:28:20 AM
> Subject: Re: Hot Problem
>
> Alan,
>
>
> I had one of the 160deg "sleeved" thermos. This is a Robertshaw
> thermostat with the sleeve soldered on. I bought a 180deg Robertshaw,
> de-soldered the sleeve and soldered it to a 180deg thermo.
> Unfortunately, the 180deg thermo ceased to work after awhile (it would
> open prematurely and the engine would run too cool).
>
> Continuing this thread, I have had a couple of thermos do this. The other
> was the OEM one on my '96 Ford Ranger (this is apparently a common
problem
> with this vehicle). Yet, you take both these thermos and test them "on
the
> bench"--i.e. heat them in a pan of water with a thermometer--and they
open right
> at the nominal setpoint. A friend suggested that you would have to test
them under
> normal pressure--e.g. 7-14psi--to see the actual functioning (maybe they
open
> prematurely under some pressure).
>
> I now have Stant thermos in both the truck and the Healey ... they work
> fine. BTW, the local AutoZone no longer carries the Robertshaw ... they
may
> have gone out of business (I've never seen them anywhere but Autozone).
>
>
> bs
> ********************************************
> Bob Spidell San Jose, CA bspidell@pacbell.net
> '67 Austin-Healey 3000 '56 Austin-Healey 100M
> ********************************************
>
> ----- Original Message -----
> From: "Alan Schultz" <alan@andysnet.net>
> To: "Rich C" <richchrysler@quickclic.net>
> Cc: "John Snyder" <helyjohn@cablespeed.com>; <healeys@autox.team.net>
> Sent: Friday, July 02, 2004 5:25 AM
> Subject: Re: Hot Problem
>
>
> > To add something to this thread. I called Nock's in CA and talked to
> > Michael. The sleeved thermostats they sell are 160 F opening stats. The
> > one in my BJ8 opens begins opening at 155 F. They have been trying to
> > get 180 F stats for a number of years. So for all those who are
> > concerned that 160 F being to low a temperature to operate a Healey
> > engine, there would be no choice but to use a non-sleeved 180 F stat.
> >
> > If anyone out there has a source for 180 F sleeved stat I would sure
> > appreciate hearing from you.
> >
> > Alan S
> > 67 BJ8 (aint-it-fun)
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