03-28-2023, 06:53 AM | #1 |
Member
Join Date: Aug 2011
Posts: 35
|
Cooling Fan
Any recommendations on installing an electric fan to help with overheating on 1940 flathead. Would a fan help and if so what should I use?
|
03-28-2023, 07:31 AM | #2 |
Senior Member
Join Date: Jun 2010
Location: Marana, AZ
Posts: 1,194
|
Re: Cooling Fan
Forty, as others will suggest here, the first thing to do is to figure out the source of your '40's overheating problem....cooling system clogging, water pump failure, timing off, etc.
That said, an electric fan is a great addition, particularly if you're in summer parades or if you live in a place as I do where summer temps are in the three digit zone!! I've always installed a "pusher" fan in front of my radiators controlled by a toggle switch under the dash. All my flatheads have been the original 6 volts, and the available fans have worked very well for me. Hope this helps!! |
Sponsored Links (Register now to hide all advertisements) |
|
03-28-2023, 12:49 PM | #3 |
Senior Member
Join Date: Jan 2019
Location: Chicago
Posts: 732
|
Re: Cooling Fan
Another thought to add:
The fan only comes into use at slow speed, in slow traffic. If you are running hot at cruise speed, when plenty of air is being forced thru the radiator, then problem is elsewhere, additional fan will not help. |
03-29-2023, 10:38 AM | #4 |
Senior Member
Join Date: Jul 2010
Posts: 136
|
Re: Cooling Fan
Basic rule is, if you overheat at slow speeds there is not enough air going through the rad. If you overheat at moderate/higher speeds there is not enough coolant flow caused by restrictions in the rad, water pump, or the block itself..
|
03-29-2023, 10:53 AM | #5 |
Senior Member
Join Date: Feb 2011
Location: Buchanan, MI
Posts: 676
|
Re: Cooling Fan
Sponsored Links (Register now to hide all advertisements)
Last edited by 42merc; 03-29-2023 at 02:55 PM. |
|
|
Sponsored Links (Register now to hide all advertisements) |
|