Quote:
Originally Posted by 38 coupe
I agree with all the suggestions to get the most airflow before condemning the radiator. You had acceptable cooling last year. Then you changed two things, the radiator and the fan system. Take the new fan system off and see what happens. It isn't fair to change two things, not like what happens, and blame one of the two changes without checking both.
In my experience fans are a trade off between low speed cooling and high speed cooling. A big fan and shroud can pull a substantial amount of air through the radiator when the car isn't moving. However, that same big fan and shroud are blockages to air flow at higher speed. I have done this exact experiment on both an F-1 and on my 53 sedan. In both changes to big fans resulted in better cooling at idle and higher temps at highway speed.
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I totally agree with what you're saying and a fan swap is next in line. I did however have the same problem when I had a pusher fan on the front.
Thanks Joe