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Re: [Healeys] Thermostats

To: <healeys@autox.team.net>, "Kees Oudesluijs" <coudesluijs@chello.nl>
Subject: Re: [Healeys] Thermostats
From: "David Nock" <healeydoc@gmail.com>
Date: Fri, 14 Sep 2018 10:43:25 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
Importance: Normal
References: <CAPAC+V6pGpcQ53C8ye+wu7xdis34UCKJ9h52JMQ0sBfx9zLipg@mail.gmail.com> <CAPAC+V4__txJNMPDqZuNYEZythrRYOM+y2VnMxDueTP4+Tq2iA@mail.gmail.com> <CAPAC+V4QWnaXA3Bgiw36SbKzK3fZnrGXiu0wiOwOBPLgCtRzpA@mail.gmail.com> <CAPAC+V68J6weA474ysvpeyee4j+Qck+4mnSiEpeRq8OunLH=fQ@mail.gmail.com> <CAPAC+V4150HNfYL3COov0WsBF+P3rfrO+qQHkVX0tL5PzNN68A@mail.gmail.com> <CAPAC+V5J9Y7uq6Q=XCLUvdWPH+NORqpbmF017qTGFBLJsZPm0A@mail.gmail.com> <CAPAC+V7GsdTmcW_PUEq-6_zpKZzs3t0sm0ndwpnJwBXAeXK7mQ@mail.gmail.com> <CAPAC+V5OFkwLhk3usWPsBkWGdbUdDAQydq6fnNj50bANZWY+Rg@mail.gmail.com> <CAPAC+V4d3OnX-XYi1F_CbRR_M9oq_5XV7gKypbXPof0b4Nd46A@mail.gmail.com> <CAPAC+V5YRC-foBCE5zFix=0oezo-oQH5R3VAHfvBxkOTmnu1CQ@mail.gmail.com> <CAPAC+V6ywraqyfNfYGQ5unG_YX_5EyorSzw6UXhJRmp32_yHxQ@mail.gmail.com> <CAPAC+V4MwMcmryoPcZpMVNwK5N85JyVqPWq3nzNnbwCnr-ygDw@mail.gmail.com> <D64BDA78E881479D89764D868E5E9366@WINDOWST93OFP9> <7d34b0f5-05bc-17b5-e7f8-9d1b931a3750@comcast.net> <b310bc29-58b1-a044-2f05-ed2cd6c8e76c@chello.nl>
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You will only notice it if you look at the temp gauge.  After 40 years =
of working on many many cars you would be amazed how many people have no =
idea what their gauges are telling them, and NEVER look at them.

I have had cars come in with almost no oil in the engine and the warning =
lights flashing at them when they go around a corner. And they have no =
clue that there is almost no oil in the engine.

Or the Healey that comes in and the oil pressure at idle is sitting at =
ZERO and they had no clue that it was that low.


David Nock
healeydoc@sbcglobal.net
209 948 8767
www.britishcarspecialists.com

Help us have our Founder Norman Nock inducteed into the=20
British Sportscar Hall of Fame, You can vote for your favorites=20
by visiting the site at.
www.britishsportscarhall.org


From: Kees Oudesluijs=20
Sent: Friday, September 14, 2018 2:58 AM
To: healeys@autox.team.net=20
Subject: Re: [Healeys] Thermostats

OEM thermostats when fail they do so closed. With other thermostats it =
can be open, closed or in between. Anyway when a thermostat fails, which =
is not very often, you soon notice the result on the temperature gauge!!

Kees Oudesluijs





Op 13-9-2018 om 16:14 schreef Bob Spidell:

  One other consideration:  I have heard--note: hearsay--that the OEM =
sleeved stats are of the 'fail closed' variety.  Have seen modern ones =
called 'fail open' or, even 'failsafe.'

  FWIW.

  Bob




  On 9/11/2018 3:44 PM, Roger Grace wrote:

    Steve,
    Yes agree with your take on the 160 F thermostats. The only possible =
benefit is that if you start with a lower coolant temp, when you hit =
traffic, it will take longer before the dreaded over temp zone is =
approached.
    As an aside, I have installed an oil temp gauge; very useful and a =
reminder just how long the engine (not coolant) takes to get up to temp. =
Trying to get in the habit of not going over 2000 RPM till OT is about =
120F =E2=80=93 often another 15-20 mins after the thermostat opens.=20
    rg

    From: BJ8Healeys=20
    Sent: Monday, September 10, 2018 12:44 PM
    To: 'healeys'=20
    Subject: Re: [Healeys] Thermostats

    Fred, I personally believe a 160-deg. F thermostat used in an effort =
to "cool down" a Healey is useless.  A thermostat responds only to the =
temperature of the coolant flowing through it by opening up to increase =
coolant flow, and once it is open all the way at 160+, it is out of the =
loop and can't open further to cool more.  I am on the NC coast where =
winters are mild.  I once tried a 160 (non-sleeved) because I had one =
that someone gave me.  My BJ8 ran so cold that winter that I actually =
had to block part of the radiator to raise it to anywhere near normal.  =
Up there in the NC mountains, that would be even more of a problem for =
you.

    I use a 187 F (86 C) New Old Stock AC sleeved thermostat (AC part =
number 1572320) that I was able to score from lister Kees Oudesluijs.  I =
installed it along with an upgraded core in the radiator at the same =
time, so I can't really say how much improvement the thermostat alone =
did; but since the modification my car runs consistently at 170 - 180 in =
the hot summers of the NC coast, except when in stop-and-go traffic when =
it might make it to 190 or a bit above.  In winter, it runs at 160 - =
170.  I can see the sleeve operate as the car warms up because the gauge =
will cycle between 160 and 190 until coolant temperature stabilizes.  =
That can take up to 50 miles.

    A friend placed an order later with Kees for several of the 190 F =
sleeved thermostats.  I got one of those as a spare.  Don't know if he =
has any left, or can get more.  As far as I know, the only sleeved =
thermostats available from the usual suspects are 160s and I wouldn't =
waste my money on them.

    I just Googled the AC part number and came up with this source:

    https://tinyurl.com/y9c6n53h

    Unfortunately, it does not post to the USA (but on the bright side, =
it offers free shipping!).  Maybe you could work out a deal with a UK =
lister to buy one for you and ship it to you.  =C2=A319.99 =3D $26.04=20

    =20

    Steve Byers

    HBJ8L/36666

    BJ8 Registry

    AHCA Delegate at Large

    Havelock, NC =20

    =20






  =20
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<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>You will only notice it if you look at the temp gauge.&nbsp; After =
40 years=20
of working on many many cars you would be amazed how many people have no =
idea=20
what their gauges are telling them, and NEVER look at them.</DIV>
<DIV>&nbsp;</DIV>
<DIV>I have had cars come in with almost no oil in the engine and the =
warning=20
lights flashing at them when they go around a corner. And they have no =
clue that=20
there is almost no oil in the engine.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Or the Healey that comes in and the oil pressure at idle is sitting =
at ZERO=20
and they had no clue that it was that low.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: =
#000000">David=20
Nock<BR>healeydoc@sbcglobal.net<BR>209 948=20
8767<BR>www.britishcarspecialists.com<BR><BR>Help us have our Founder =
Norman=20
Nock inducteed into the <BR>British Sportscar Hall of Fame, You can vote =
for=20
your favorites <BR>by visiting the site=20
at.<BR>www.britishsportscarhall.org<BR></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV>&nbsp;</DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dcoudesluijs@chello.nl=20
href=3D"mailto:coudesluijs@chello.nl";>Kees Oudesluijs</A> </DIV>
<DIV><B>Sent:</B> Friday, September 14, 2018 2:58 AM</DIV>
<DIV><B>To:</B> <A title=3Dhealeys@autox.team.net=20
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Thermostats</DIV></DIV></DIV>
<DIV>&nbsp;</DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<P>OEM thermostats when fail they do so closed. With other thermostats =
it can be=20
open, closed or in between. Anyway when a thermostat fails, which is not =
very=20
often, you soon notice the result on the temperature gauge!!</P>
<P>Kees Oudesluijs</P>
<P>&nbsp;</P>
<P>&nbsp;</P>
<DIV class=3Dmoz-cite-prefix>Op 13-9-2018 om 16:14 schreef Bob =
Spidell:<BR></DIV>
<BLOCKQUOTE cite=3Dmid:7d34b0f5-05bc-17b5-e7f8-9d1b931a3750@comcast.net=20
type=3D"cite">
  <P>One other consideration:&nbsp; I have heard--note: hearsay--that =
the OEM=20
  sleeved stats are of the 'fail closed' variety.&nbsp; Have seen modern =
ones=20
  called 'fail open' or, even 'failsafe.'</P>
  <P>FWIW.</P>
  <P>Bob<BR></P><BR>
  <DIV class=3Dmoz-cite-prefix>On 9/11/2018 3:44 PM, Roger Grace =
wrote:<BR></DIV>
  <BLOCKQUOTE cite=3Dmid:D64BDA78E881479D89764D868E5E9366@WINDOWST93OFP9 =

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    <DIV dir=3Dltr>
    <DIV=20
    style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans&#13;&#10;         =
   ms'; COLOR: #000000">
    <DIV>Steve,</DIV>
    <DIV>Yes agree with your take on the 160 F thermostats. The only =
possible=20
    benefit is that if you start with a lower coolant temp, when you hit =

    traffic, it will take longer before the dreaded over temp zone is=20
    approached.</DIV>
    <DIV>As an aside, I have installed an oil temp gauge; very useful =
and a=20
    reminder just how long the engine (not coolant) takes to get up to =
temp.=20
    Trying to get in the habit of not going over 2000 RPM till OT is =
about 120F=20
    =E2=80=93 often another 15-20 mins after the thermostat opens. =
</DIV>
    <DIV>rg</DIV>
    <DIV=20
    style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
    <DIV style=3D"FONT: 10pt tahoma">
    <DIV>&nbsp;</DIV>
    <DIV style=3D"BACKGROUND: #f5f5f5">
    <DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dsbyers@ec.rr.com=20
    moz-do-not-send=3D"true">BJ8Healeys</A> </DIV>
    <DIV><B>Sent:</B> Monday, September 10, 2018 12:44 PM</DIV>
    <DIV><B>To:</B> <A title=3DHealeys@autox.team.net=20
    moz-do-not-send=3D"true">'healeys'</A> </DIV>
    <DIV><B>Subject:</B> Re: [Healeys] Thermostats</DIV></DIV></DIV>
    <DIV>&nbsp;</DIV></DIV>
    <DIV=20
    style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
    <DIV class=3DWordSection1>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Fred,=20
    I personally believe a 160-deg. F thermostat used in an effort to =
"cool=20
    down" a Healey is useless.&nbsp; A thermostat responds only to the=20
    temperature of the coolant flowing through it by opening up to =
increase=20
    coolant flow, and once it is open all the way at 160+, it is out of =
the loop=20
    and can't open further to cool more.&nbsp; I am on the NC coast =
where=20
    winters are mild.&nbsp; I once tried a 160 (non-sleeved) because I =
had one=20
    that someone gave me.&nbsp; My BJ8 ran so cold that winter that I =
actually=20
    had to block part of the radiator to raise it to anywhere near =
normal.&nbsp;=20
    Up there in the NC mountains, that would be even more of a problem =
for=20
    you.<o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>I use=20
    a 187 F (86 C) New Old Stock AC sleeved thermostat (AC part number =
1572320)=20
    that I was able to score from lister Kees Oudesluijs.&nbsp; I =
installed it=20
    along with an upgraded core in the radiator at the same time, so I =
can't=20
    really say how much improvement the thermostat alone did; but since =
the=20
    modification my car runs consistently at 170 - 180 in the hot =
summers of the=20
    NC coast, except when in stop-and-go traffic when it might make it =
to 190 or=20
    a bit above.&nbsp; In winter, it runs at 160 - 170.&nbsp; I can see =
the=20
    sleeve operate as the car warms up because the gauge will cycle =
between 160=20
    and 190 until coolant temperature stabilizes.&nbsp; That can take up =
to 50=20
    miles.<o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>A=20
    friend placed an order later with Kees for several of the 190 F =
sleeved=20
    thermostats.&nbsp; I got one of those as a spare.&nbsp; Don't know =
if he has=20
    any left, or can get more.&nbsp; As far as I know, the only sleeved=20
    thermostats available from the usual suspects are 160s and I =
wouldn't waste=20
    my money on them.<o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>I just=20
    Googled the AC part number and came up with this=20
    source:<o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><B><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><A=20
    href=3D"https://tinyurl.com/y9c6n53h"=20
    =
moz-do-not-send=3D"true">https://tinyurl.com/y9c6n53h</A><o:p></o:p></SPA=
N></B></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Unfortunately,=20
    it does not post to the USA (but on the bright side, it offers free=20
    shipping!).&nbsp; Maybe you could work out a deal with a UK lister =
to buy=20
    one for you and ship it to you.&nbsp; =C2=A319.99 =3D $26.04 =
</SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans&#10; ms"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><o:p></o:p></SPAN>&nbsp;</P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Steve=20
    Byers</SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>HBJ8L/36666</SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>BJ8=20
    Registry</SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>AHCA=20
    Delegate at Large</SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Havelock,=20
    NC&nbsp; </SPAN><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN></P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; =
COLOR: #002060'><o:p></o:p></SPAN>&nbsp;</P>
    <P class=3DMsoNormal><SPAN=20
    style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><o:p></o:p></SPAN><BR></P></DIV></DIV></DIV></DIV></BLOCKQUOTE><=
BR><BR>
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