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why do full drag cars have radiator fans?

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Old Sep 11, 2003 | 01:36 PM
  #1  
Mikey3000's Avatar
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Default why do full drag cars have radiator fans?

the car is on for no more than 2 minutes. why do they need a fan?
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Old Sep 11, 2003 | 01:54 PM
  #2  
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Default Re: why do full drag cars have radiator fans? (Salvatore Leone)

The cooler the better man, Why not?... Some all motor cars run no radiators at all, and some methanol cars run real really small radiators.
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Old Sep 11, 2003 | 02:45 PM
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saso
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Default Re: why do full drag cars have radiator fans? (SIXTYdashONE)

Your car can heat up a lot in 2 minutes, my drag car has a civic c&r radiator with a small fan and it will pratically overheat in 10minutes at idle and 10 seconds at racing.
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Old Sep 11, 2003 | 02:50 PM
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Default Re: why do full drag cars have radiator fans? (saso)

hmmmm.....our car doesnt get 160' at idle for atleast 10mins....at the end of the track im usually 190.....then im back down to 160 at the scales...and im even running a filled block...our CR is the one with the Stewartpump in the side...i know my old car with its fludyne ran very hot....maybe its the radiator...

Howard
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Old Sep 11, 2003 | 03:05 PM
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Default Re: why do full drag cars have radiator fans? (AR Fab)

i would think the one benefit to having a fan is for eliminations. sometimes the track/sanctioning body tries to rush things and thats about the only time i see it coming in handy. like a round robbin situation. i used to use mine through the burnout box and flip it off for the run.......probably didn't do much except make me "think" it was helping....haha.
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Old Sep 11, 2003 | 03:27 PM
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Default Re: why do full drag cars have radiator fans? (Salvatore Leone)

keep the valves cool...
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Old Sep 11, 2003 | 03:39 PM
  #7  
saso
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Default Re: why do full drag cars have radiator fans? (Jay Dirt)

definately the radiator.
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Old Sep 11, 2003 | 04:52 PM
  #8  
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Default Re: why do full drag cars have radiator fans? (saso)

we didnt run a radiator for a whole event and it survived. it runs on meth
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Old Sep 11, 2003 | 08:04 PM
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Default Re: why do full drag cars have radiator fans? (GRTechnologies)

We run a go kart radiator with no fan!
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Old Sep 11, 2003 | 10:32 PM
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Default Re: why do full drag cars have radiator fans? (tony1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">We run a go kart radiator with no fan! </TD></TR></TABLE>

that **** is small, i thought it was an oil cooler at first
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Old Sep 12, 2003 | 01:12 AM
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Default

no fan here either
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Old Sep 12, 2003 | 01:26 AM
  #12  
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Default Re: why do full drag cars have radiator fans? (Salvatore Leone)

haha duidn't realize you asked why they had fans, it hought you meant radiators

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Old Sep 12, 2003 | 06:41 AM
  #13  
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Default Re: why do full drag cars have radiator fans? (Jay Dirt)

i run stock rad w/ stock fan on a switch. i will probably convert to a civic sized rad before too long though.
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Old Sep 12, 2003 | 08:12 AM
  #14  
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Default Re: why do full drag cars have radiator fans? (GRTechnologies)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GRTechnologies &raquo;</TD></TR><TR><TD CLASS="quote">we didnt run a radiator for a whole event and it survived. it runs on meth</TD></TR></TABLE>

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Old Sep 13, 2003 | 02:21 PM
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Default

I would assume the reason is because they are mostly sitting idle, and even when going down the track, there is little airflow to the radiator with full fiberglass front ends.

I think you'd probably be suprised how hot your car can get when racing on a radiator with little to no airflow.
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