Re: Extra cooling fan question

["'Jay' via The 1962 to 1965 Mopar Mail List Clubhouse" <1962to1965mopars@xxxxxxxxxxxxxxxx>]

Paul,
I'm using an, Aluminum 2 core with 1 inch wide Cores and a matching custom shroud from Smith Racing Radiator's,, along with a Flow Kooler Hi flow mechanical water pump. This new TNT 440 engine runs very powerful but this City cooling problem just won't stop hassling me.
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On Sat, 2/14/15, 'Paul L. http://1962to1965mopar.ornocar.org/ml-le' via The 1962 to 1965 Mopar Mail List Clubhouse <1962to1965mopars@xxxxxxxxxxxxxxxx> wrote:

 Subject: Re: Extra cooling fan question
 To: 1962to1965mopars@xxxxxxxxxxxxxxxx
 Date: Saturday, February 14, 2015, 1:57 PM
 
 I have a similar setup to yours including a higher
 output water pump, except that I have a stock 2 core copper
 radiator, 4 blade fan, and no shroud.  When I bought the
 car it had an electric pusher fan.  I saw the same symptoms
 you describe.  The fan was on a switch so I could turn it
 off and on at will.  I found that it had absolutely no
 effect.  As my temps would creep up in city driving I could
 turn on the fan and they would just continue to creep up.
  So I took mine off.  I'm with George in that I think
 it may have blocked airflow and made it worse.
  As purchased my 440 had stock
 heads & pistons.  Since then I have made a few mods to
 bump up the compression and therefore more heat.  The last
 machinist who worked on my engine is a Mopar guy and a
 serious drag racer.  He suggested running a 160*
 thermostat.  He said to try and run it just a little hotter
 than necessary to make sure the choke opens.  He was
 working on my engine because I had a detonation issue.
  Stock C.I. 440 heads are prone to detonation due to the
 spark plug placement.  So keeping the engine as cool as
 practical pays benefits in preventing detonation problems.
  When I put the engine
 back in the car with the new 160* stat it overheated right
 away.  After a little trial and detective work I noticed
 that the new stat had an opening that was considerably
 smaller than my original 180* stat.  So with the old 180*
 stat installed everything was back to normal.  Note that
 this was just last month when we had a warm stretch of
 40*-60* days.  It still wanted to get a little warm in city
 driving.  So before things get too hot this summer I'll
 be installing a 3 core aluminum radiator.  As noted in a
 thread on radiators last week the best performing radiators
 have a fin count of 14 - 16 per inch.  All of the folks in
 this forum who have gone this route have cured their
 overheating problem.  You don't have to hit me in the
 head more than a few times for good advice to sink in.  
 ;-)
 
 
 
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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!

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