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09-10-2010, 10:32 AM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
FANS! Automatic or manual?
This isn't necessarily a Kirkham specific post. It also applies to FE's, but let's start at Kirkhams with FE's.
Do you guys run automatic fans or the stock manual switch?
And if manual, why keep it that way? Originality? Ever forget to turn them on? Do you leave them on?
Thanks,
rodneym
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09-10-2010, 10:39 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
Both!
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
________
Utinam logica falsa tuam philosophiam totam suffodiant!
________
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09-10-2010, 10:41 AM
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Senior Club Cobra Member
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Join Date: Jun 2004
Location: Huntington,
VT
Cobra Make, Engine: E-M 427 Top Oiler stroked to 482 by KC, Stage 2 heads, a Quikfuel and Voila, 640 hp
Posts: 502
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Not Ranked
I use the manual fan switch. I use it to force me to let the thermostat open and make sure I'm up to temp before I take off. I've never forgotten to flip it on. Yet..........
Tim
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At first, nothing happened. Then after a few seconds, nothing continued to happen.
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09-10-2010, 10:47 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Both, as I suspect most of us do.
In case I forget (with increasing frequency  ), the auto thermo kicks in. The auto is set at a higher temp than I normally like, it depends. On the race track I run the fan manually as soon as the engine temp nears normal, the motor does run hotter on the track. |
09-10-2010, 02:35 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,445
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Not Ranked
Manual.
Because nothing is automatic or idiot proofed in my Cobra.
__________________
Jamo
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09-10-2010, 02:46 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,588
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Not Ranked
What, no one looks at their gauges anymore?
When in stop and go traffic, during hot weather, flip switch.
When dark and need lights, flip switch.
When need fuel pressure, flip switch.
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09-10-2010, 02:47 PM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
Maybe I should have just PM'd Jamo from the start. 
After all, it was the answer I was looking for. I wholeheartedly agree.
I'm just worried about the idiot behing the wheel. 
rodneym |
09-10-2010, 02:47 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,000
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Not Ranked
Rodney, I do both. But I also have pusher fans. So, I have the puller fan thermostatically controlled, but the manual override switch on the dash controls both the puller and pushers. It's a redundant set up, in case something fails on one it won't affect the other. All on circuit breakers that automatically reset. Being the anal nut that I am, I had to make a detailed post on it all. Here it is: Cool Modification - For Pusher Fans Only, Though |
09-10-2010, 04:52 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,445
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Not Ranked
Quote:
Originally Posted by patrickt
Rodney, I do both. But I also have pusher fans. So, I have the puller fan thermostatically controlled, but the manual override switch on the dash controls both the puller and pushers. It's a redundant set up, in case something fails on one it won't affect the other. All on circuit breakers that automatically reset. Being the anal nut that I am, I had to make a detailed post on it all. Here it is: Cool Modification - For Pusher Fans Only, Though |
You puzzy.
One switch...lines to both relays, one for pushers and one for the puller. All or none.
Generally speaking, turn them on in May and turn them off in October.
My idea of backup...if one of the Lucas relays blow, I'll use the Lucas relay for the horns and just yell at everyone to get the hell out of my way.
__________________
Jamo
Last edited by Jamo; 09-10-2010 at 04:54 PM..
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09-10-2010, 05:24 PM
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Senior Club Cobra Member
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Join Date: Jan 2005
Location: saratoga,
ca
Cobra Make, Engine: Kirkham #185, Shelby Alloy 482; sold
Posts: 1,190
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Not Ranked
I had an automatic fan which failed. I then went to manual, which I forgot to turn on too many times. Now, it's just on all the time! I like it that way, I only know hear it when the ignition is on and the engine is off.
__________________
Dave
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09-10-2010, 05:48 PM
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Senior Club Cobra Member
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Join Date: Jun 2005
Location: Scottsdale,
az
Cobra Make, Engine: Bought an Exact carbon car in TX. Bought a 427 sideoiler with 630 HP
Posts: 1,714
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Not Ranked
Auto puller, manual pusher........
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double ugly
The average fighter pilot, despite the sometimes swaggering exterior, is very much capable of such feelings as love, affection, intimacy and caring. These feelings just don't involve anybody else.
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09-10-2010, 06:31 PM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,097
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Not Ranked
Both. Auto has worked well so far. Once in a while I'll hit the manual switch, but not very often.
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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09-13-2010, 01:32 PM
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CC Member
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Join Date: May 2009
Cobra Make, Engine:
Posts: 135
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the real cooling fan (puller, behind the radiator) is on a thermostatic switch. The pusher fans are on a manual switch on the dash. They help lower the temp by an additional 2 degrees, while in bumper to bumper traffic, but as soon as I move again, the temp drops right down to near and around the thermostat opening temp, as long as I keep cruising.
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09-13-2010, 01:34 PM
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CC Member
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Join Date: May 2006
Location: Exeter,
CA
Cobra Make, Engine: KMP 498
Posts: 495
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I just have one switch. It was alot cheaper and I saved a ton of weight.
I turn it on after it warms up and when I need the fan- no thermostat tells me what to do. Yes, I am a tea-party guy!
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Sanded Aluminum Finish? Because I Can!
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09-13-2010, 01:38 PM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,283
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automatic 2 speed puller with manual over-ride for hi speed.
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Too many toys?? never!
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09-13-2010, 01:41 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,000
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Not Ranked
I can't go an entire season without forgetting to put my ankle clearly over my sidepipes when getting out (yes, slight burn this past weekend). I know I could not go an entire season without forgetting to manually turn my fans on.  |
09-13-2010, 01:51 PM
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CC Member
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Join Date: Aug 2009
Location: Edinburg,
TX
Cobra Make, Engine: Everett Morrison, All aluminum small block ford.
Posts: 436
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Not Ranked
Quote:
Originally Posted by patrickt
I can't go an entire season without forgetting to put my ankle clearly over my sidepipes when getting out (yes, slight burn this past weekend). I know I could not go an entire season without forgetting to manually turn my fans on. |
If you would glass your doors in and climb out the top like your supposed to...you would have that problem...lol.
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" If it wont break em loose in 3rd gear, it aint enough power "
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09-13-2010, 02:12 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Running the fans when they are not needed (when the engine is not yet warmed up, or at high speed) puts an unnecessary load on the alternator which is a horsepower drain. Fans can draw a lot of amps, and can cause you to lose HP due to parasitic alternator load.
My fans kick on automatically from the sensor on the radiator and only run when needed. I also have a manual over-ride switch if needed, but almost never use it.
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
________
Utinam logica falsa tuam philosophiam totam suffodiant!
________
Last edited by CobraEd; 09-13-2010 at 02:46 PM..
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09-13-2010, 02:53 PM
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CC Member
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Join Date: May 2008
Location: San Jose CA,
CA
Cobra Make, Engine: SPF_R_/BRG/FRBoss302/327CI/FordEFI/Under_Car_Exh/
Posts: 2,523
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Not Ranked
I rigged mine to be auto and manual, -- but regardless they all go offy-off with the shut-down of the ignition.
Steve
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Steve SPF 2734 MK3 / Brock Coupe #54- panavia.com
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09-13-2010, 03:04 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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I worry more about my fan, which like me is old, wearing out due to running to much. I set the temp sensor a little high and try to run it manually if I need it before the temp sensor (like in traffic, town, etc.).
The T-Stat continues to run the fan after engine shut down if the temp is to high, then shuts off automatically. Usually as I'm walking away.
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