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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
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Fred =
Wescoe
Sent: Sunday, September 09, 2018 8:38 PM
To: healeys
Subject: [Healeys] Thermostats
=20
Listers,
=20
I have researched what I can of the archives and other sources and am =
still puzzled. I cannot find any real answers and direction on the =
question of which thermostat I should use in my 66 BJ8. Some answers =
indicate a sleeved thermostat and others say no sleeve. Some say a =
short sleeve and others say only the long sleeve works. Some answers =
indicate using a 160 degree thermostat while others propose 180 degrees =
and even 190 degrees. Some even say the Moss sleeved thermostat does =
not work.
=20
I am in North Carolina and drive the car most of the year. Right now =
the car has a non sleeved 190 degree thermostat. The car starts and =
needs to warm up, at idle, to almost full temp before it runs with no =
problems. Otherwise it spits, coughs and has no power. The car runs at =
about 190 degres except when I drive the mountains and of course stop =
and go traffic.
=20
What is the consensus of thoughts as we approach colder weather? And =
what are the sources and manufacturer for a good thermostat?
=20
Thanks for the help,
=20
Fred
66BJ8
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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'>Fred, I personally believe a 160-deg. F thermostat =
used in an effort to "cool down" a Healey is useless.=C2=A0 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.=C2=A0 I am on the NC coast where winters are mild.=C2=A0 I =
once tried a 160 (non-sleeved) because I had one that someone gave =
me.=C2=A0 My BJ8 ran so cold that winter that I actually had to block =
part of the radiator to raise it to anywhere near normal.=C2=A0 Up there =
in the NC mountains, that would be even more of a problem for =
you.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans MS";color:#002060'>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.=C2=A0 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.=C2=A0 In winter, it runs at 160 =
- 170. =C2=A0I can see the sleeve operate as the car warms up because =
the gauge will cycle between 160 and 190 until coolant temperature =
stabilizes.=C2=A0 That can take up to 50 miles.<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Comic =
Sans MS";color:#002060'>A friend placed an order later with Kees for =
several of the 190 F sleeved thermostats.=C2=A0 I got one of those as a =
spare.=C2=A0 Don't know if he has any left, or can get more.=C2=A0 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.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans MS";color:#002060'>I =
just Googled the AC part number and came up with this =
source:<o:p></o:p></span></p><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans MS";color:#002060'><a =
href=3D"https://tinyurl.com/y9c6n53h";>https://tinyurl.com/y9c6n53h</a><o:=
p></o:p></span></b></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'>Unfortunately, it does not post to the USA (but on =
the bright side, it offers free shipping!).=C2=A0 Maybe you could work =
out a deal with a UK lister to buy one for you and ship it to you. =
=C2=A0=C2=A319.99 =3D $26.04 </span><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Comic =
Sans MS";color:#002060'>Steve Byers</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'>HBJ8L/36666</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans MS";color:#002060'>BJ8 =
Registry</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'>AHCA Delegate at Large</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'>Havelock, NC </span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#00206=
0'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Comic Sans =
MS";color:#002060'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of </b>Fred =
Wescoe<br><b>Sent:</b> Sunday, September 09, 2018 8:38 PM<br><b>To:</b> =
healeys<br><b>Subject:</b> [Healeys] =
Thermostats<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal>Listers,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
have researched what I can of the archives and other sources and am =
still puzzled. I cannot find any real answers and direction on the =
question of which thermostat I should use in my 66 BJ8. Some =
answers indicate a sleeved thermostat and others say no sleeve. =
Some say a short sleeve and others say only the long sleeve works. =
Some answers indicate using a 160 degree thermostat while others propose =
180 degrees and even 190 degrees. Some even say the Moss sleeved =
thermostat does not work.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
am in North Carolina and drive the car most of the year. Right now =
the car has a non sleeved 190 degree thermostat. The car starts =
and needs to warm up, at idle, to almost full temp before it runs with =
no problems. Otherwise it spits, coughs and has no power. =
The car runs at about 190 degres except when I drive the mountains and =
of course stop and go traffic.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>What is the consensus of thoughts as we approach =
colder weather? And what are the sources and manufacturer for a =
good thermostat?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Thanks for the help,<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Fred<o:p></o:p></p></div><div><p =
class=3DMsoNormal>66BJ8<o:p></o:p></p></div></div></div></body></html>
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