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Thanks, Alan. I had the exhaust manifold ceramic coated years ago. =20
=20
Bruce Steele
Brea, CA
1960 BN7
=20
From: Alan Seigrist [mailto:healey.nut@gmail.com]=20
Sent: Tuesday, July 20, 2021 8:32 PM
To: Harold Manifold <manifold@telus.net>
Cc: Kees Oudesluijs <coudesluijs@upcmail.nl>; Bruce Steele =
<healeybruce@roadrunner.com>; Austin Healey <Healeys@autox.team.net>
Subject: Re: [Healeys] Auxiliary electric fan
=20
In 1991 bolt on cooling fans didn't have sufficient CFMs to be =
particularly effective, but worked well on the jags and MGs that had =
them simply because they designed the systems around the CFMs they could =
produce. In the last 10-15 years, the fans you can buy now can move a =
huge amount of air, so putting a pusher in front of the radiator is a =
viable option now.
=20
Although my view still remains to make sure the cooling system is =
sorted, suggest jet hot coating the exhaust header first, and go with a =
plastic 5 blade fan and use a 165 deg thermostat. If that still doesn't =
work then consider adding a fan.
=20
Cheers,
=20
Alan
=20
On Wed, Jul 21, 2021 at 1:11 AM Harold Manifold via Healeys =
Bruce,
=20
See this 1991 memo form Geoff Healey. An electric fan could worsen =
cooling problems if it doesn=E2=80=99t always draw ambient air.=20
=20
Harold
=20
Sent: Tuesday, July 20, 2021 7:23 AM
Subject: Re: [Healeys] Auxiliary electric fan
=20
Always fit a thermo-switch and a manual override switch. The thermo =
switch should be compatible with the opening temperature of the engine =
thermostat. The thermoswitch should switch off at a temperature about 5 =
degrees C over the opening temperature of the thermostat. It should =
switch on near 90-95 degrees C.
Remember, the higher the temperature the better the cooling because of =
an increase in Delta T.
Kees Oudesluijs
=20
_______________________________________________
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive
http://autox.team.net/mailman/listinfo/healeys
http://autox.team.net/mailman/options/healeys/healey.nut@gmail.com
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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet MS",sans-serif'>Thanks, Alan.=C2=A0 I =
had the exhaust manifold ceramic coated years ago.=C2=A0 =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet =
MS",sans-serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet MS",sans-serif'>Bruce =
Steele<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet MS",sans-serif'>Brea, =
CA<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet MS",sans-serif'>1960 =
BN7<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Trebuchet =
MS",sans-serif'><o:p> </o:p></span></p><p =
class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Alan Seigrist [mailto:healey.nut@gmail.com] <br><b>Sent:</b> Tuesday, =
July 20, 2021 8:32 PM<br><b>To:</b> Harold Manifold =
<manifold@telus.net><br><b>Cc:</b> Kees Oudesluijs =
<coudesluijs@upcmail.nl>; Bruce Steele =
<healeybruce@roadrunner.com>; Austin Healey =
<Healeys@autox.team.net><br><b>Subject:</b> Re: [Healeys] =
Auxiliary electric fan<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>In 1991 =
bolt on cooling fans didn't have sufficient CFMs to be particularly =
effective, but worked well on the jags and MGs that had them simply =
because they designed the systems around the CFMs they could =
produce. In the last 10-15 years, the fans you can buy now can =
move a huge amount of air, so putting a pusher in front of the radiator =
is a viable option now.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Although my view still remains to make sure the =
cooling system is sorted, suggest jet hot coating the exhaust header =
first, and go with a plastic 5 blade fan and use a 165 deg =
thermostat. If that still doesn't work then consider adding a =
fan.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Cheers,<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Alan<o:p></o:p></p></div></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Wed, Jul 21, 2021 at 1:11 AM Harold Manifold via Healeys <<a =
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Bruce,<o:p><=
/o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>See this =
1991 memo form Geoff Healey. An electric fan could worsen cooling =
problems if it doesn=E2=80=99t always draw ambient air. =
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Harold<o:p><=
/o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div style=3D'border:none;border-top:solid #E1E1E1 =
1.0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From: =
</b><a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">Kees =
Oudesluijs via Healeys</a><br><b>Sent: </b>Tuesday, July 20, 2021 7:23 =
AM<br><b>To: </b><a href=3D"mailto:healeybruce@roadrunner.com"; =
target=3D"_blank">Bruce Steele</a>; <a =
href=3D"mailto:Healeys@autox.team.net"; target=3D"_blank">Austin =
Healey</a><br><b>Subject: </b>Re: [Healeys] Auxiliary electric =
fan<o:p></o:p></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><p>Always fit a thermo-switch and a manual override switch. The =
thermo switch should be compatible with the opening temperature of the =
engine thermostat. The thermoswitch should switch off at a temperature =
about 5 degrees C over the opening temperature of the thermostat. It =
should switch on near 90-95 degrees C.<o:p></o:p></p><p>Remember, the =
higher the temperature the better the cooling because of an increase in =
Delta T.<o:p></o:p></p><p>Kees Oudesluijs<o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a href=3D"http://www.team.net/donate.html"; =
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