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| electric fan conversion questions https://slantsix.org/forum/viewtopic.php?t=23912 |
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| Author: | Andy's GT [ Thu Jul 05, 2007 9:19 pm ] |
| Post subject: | electric fan conversion questions |
hey all, picked up a couple fans at the junkyard today, one for dads a-100, recently decided to use a 73 a body radiator since were switching to automatic and need a cooler, and decided to go with an electric fan, this truck will mostly be a around the property work truck with occasional runs into town maybe, got one for my 67 as well, this is my daily driver, i was thinking that i had read on here somewhere that this would help increase fuel efficiency, but then i realized i still need to leave part of the stuff, ie the pulley and belt to have a working water pump, will this help at least a little? im driving a little more then 30 miles each way to work everyday and every bit helps, also, my dart has a fan shroud, should i keep that somehow or no? does it matter? more or less planning on just running a 12v wire with an inline fuse and a toggle switch maybe(i have an elec fuel pump, thinking about tapping into that line(inline fuse in there) maybe so that it will be on whenever the car is on) so, i guess, what im asking is, does this sound right? thanks guys |
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| Author: | sandy in BC [ Fri Jul 06, 2007 6:40 am ] |
| Post subject: | |
Sounds fine...I used to have one on the Valaint...wired as you describe...worked fine for years...cept I never turned it on. It freewheeled itself to death.....so I took it off and run fanless. |
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| Author: | slantvaliant [ Fri Jul 06, 2007 11:36 am ] |
| Post subject: | Re: electric fan conversion questions |
[quote="Andy's GT" ] ...more or less planning on just running a 12v wire with an inline fuse and a toggle switch maybe(i have an elec fuel pump, thinking about tapping into that line(inline fuse in there) maybe so that it will be on whenever the car is on) so, i guess, what im asking is, does this sound right? thanks guys[/quote] You'd be better off wiring the fan to run off a relay, keeping the relatively high current on that side of the firewall. A thermostat switch could turn it on when needed. Wiring kits are available from the various vendors, or you could get the parts from a junkyard donor and make your own. If the fan runs full-time, it'll be drawing power when it's not needed, reducing the advantage over engine-driven fans. As Sandy can attest, you don't need a fan all the time! However, if you have to sit in traffic much, drive in "parade" or other slow-go situations, or need to let it idle for long periods, a fan is a good thing. A properly fitted shroud helps a lot. A poorly fitted shroud is in the way and can hurt airflow through the radiator. |
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| Author: | zedpapa [ Fri Jul 06, 2007 12:12 pm ] |
| Post subject: | |
i would leave the mechanical fan on the work truck because fuel efficency is not a concern. less stuff to worry about. on your 67, definitely put it on its own circuit with a fuse AND a relay to keep the high current on the engine side of the firewall. also, be careful how you tie it in to your electrical system. you don't want that current going through your ammeter if you can help it. mine is wired that way and i need to change it before something melts or burns up. someone here should know the correct way to wire it up. zedpapa |
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| Author: | sandy in BC [ Fri Jul 06, 2007 12:22 pm ] |
| Post subject: | |
Lest anyone should think I recommend running with no fan... My car never sees a stoplight...and if it did it would be less than 45 seconds long. We have no traffic and the parade is 4 blocks long. I drive 2 blocks to the highway and run it up to 2000rpm in 5th and drive for 20 mins to get groceries. The nearest drivethrough or stoplight is 125 miles/2.5 hours and a ferry ride away. We put most of the miles on this car in the 3 seasons other than summer using it as a snowboardcross team car. Not exactly overheating season. If im driving my car Im not on a schedule ....Im not at work....I can wait at the lookout till it cools down. Drive fast .....go down a gear on grades....keep an eye on the gauge. |
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| Author: | slantvaliant [ Fri Jul 06, 2007 1:51 pm ] |
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Quote: Lest anyone should think I recommend running with no fan....
Sorry, didn't mean to imply that you did, Sandy. Your car is very interesting, shows a lot of thought and very good execution, and is well adapted to your intended uses. You've given us a lot of good ideas. That's what it's all about around here! |
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| Author: | sandy in BC [ Fri Jul 06, 2007 2:42 pm ] |
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Cars need a vision and a purpose ......you may end up fanless. Modified Pro Beater with a 1965 Shell 4000 Rally theme. As a snowboard team car it was carrying our local snowboardcross team and myself to pro competiopns all winter. It did that for 3 or 4 years. It has been to the Nationals . It got way more attention than the Channel 7 Snow bunny Bus thingy. My team and car were on Ride Guide once..... It is our custom ,at any race, to be there early enough to do doughnuts in the parking lot. The Valaint never failed to make its mark. They really are remakable cars.... sorry to hijack ...again |
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| Author: | mopar_nocar [ Fri Jul 06, 2007 3:35 pm ] |
| Post subject: | instead of big $$$... |
...i used a subaru thermostat switch of the ebag for $4....i drilled a hole in the t-stat housing, tapped it for 16mm threads. i ran that wire to a relay. it activates the ground of the relay. it comes on reliably @~190* the t-stat opens @180* the only time the fan kicks on is hot days in traffic...stop and go stuff. it works well. i'm sure one could find a similar deal by scrounging a bit. sb |
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