RE: electric fan pulley size

[Dave <civiltech@xxxxxxx>]

Don,
Would that be 1/2" bigger or smaller? Not sure if the thought is to make it
spin a little faster (this seems to me to be the idea) or spin just a little
slower. Just want to be sure with the intent. 

Also, does your relay setup work with a 4 speed vehicle?

Thanks.

Dave Harms
 


-----Original Message-----
From: Don Dulmage [mailto:big-d@xxxxxxxxxxxx] 
Sent: Sunday, September 21, 2008 12:18 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: fan electric



 I use a relay when i do it. The brake lights are only the trigger for the
relay, not the power source. It works very well too since when moving the
fan is not needed since airflow is good. Just when stopped or creeping in
traffic is the fan needed and so whenever the brakes are applied the relay
triggers and the fan runs cooling the rad. 
BTW more often than not a simple change in fan pulley diameter will make the
car run cooler . About 1'2 inch. i have fixed several of our cars of this
period by doing that. Usually the fan pulley from the poly is just right.
Last one i cured was Bill Parsons  black 64 with the OR style engine in it.
Many of you met Bill at Carlise recently so i heard by the grapevine so you
know the car. it was creep heating, if you will in traffic, even in downtown
Picton which is a tiny town. A simple change of fan pulley to one from a 318
poly which was about 1/2 to 3/4 smaller sped the water pump and fan up to
the point where it is nonexistant as a problem. . I did the math for  Bill
but i didnt keep it. Seemed to be though it was over a hundred RPM  maybe
two or more it worked out to on the pump speed. I remember he was surprised
since al lthe "experts " said "that wont make no difference" but it does and
it did. Same for my car as well BTW. .
[Non-text portions of this message have been removed]


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Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html.