[Healeys] Auxiliary electric fan

Bruce Steele healeybruce at roadrunner.com
Wed Jul 21 13:41:46 MDT 2021

I’m not sure it reduced heat, but it looks great!


Bruce Steele

Brea, CA

1960 BN7


From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bob Spidell
Sent: Wednesday, July 21, 2021 8:54 AM
To: healeys at autox.team.net
Subject: Re: [Healeys] Auxiliary electric fan


FWIW, I had my BJ8's manifold coated--by JetHot--during an overhaul and didn't notice any difference in running temps.

On 7/21/2021 8:04 AM, Bruce Steele via Healeys wrote:

Thanks, Alan.  I had the exhaust manifold ceramic coated years ago.  


Bruce Steele

Brea, CA

1960 BN7


From: Alan Seigrist [mailto:healey.nut at gmail.com] 
Sent: Tuesday, July 20, 2021 8:32 PM
To: Harold Manifold  <mailto:manifold at telus.net> <manifold at telus.net>
Cc: Kees Oudesluijs  <mailto:coudesluijs at upcmail.nl> <coudesluijs at upcmail.nl>; Bruce Steele  <mailto:healeybruce at roadrunner.com> <healeybruce at roadrunner.com>; Austin Healey  <mailto:Healeys at autox.team.net> <Healeys at autox.team.net>
Subject: Re: [Healeys] Auxiliary electric fan


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.


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.






On Wed, Jul 21, 2021 at 1:11 AM Harold Manifold via Healeys <healeys at autox.team.net <mailto:healeys at autox.team.net> > wrote:



See this 1991 memo form Geoff Healey. An electric fan could worsen cooling problems if it doesn’t always draw ambient air. 




From: Kees Oudesluijs via Healeys <mailto:healeys at autox.team.net> 
Sent: Tuesday, July 20, 2021 7:23 AM
To: Bruce Steele <mailto:healeybruce at roadrunner.com> ; Austin Healey <mailto:Healeys at autox.team.net> 
Subject: Re: [Healeys] Auxiliary electric fan


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




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