Quote:
humanpotatohybrid wrote:
As a quick rule in fluid dynamics, generating a pressure against a resistance will result in more flow than pulling a partial vacuum... however at the relatively low pressures of a fan it probably makes no difference.
Pulling might cause more even airflow through the radiator thoight because of the vacuum would probably draw air more evenly than forced air.
The other thing I've come across in my reading is that putting a fan on the front of the radiator creates a dead zone where the fan motor totally blocks air flow. The fan motor on the large fans is probably 5" in diameter, so a 5" circle is effectively blocked. You don't have any blockage with the fan on the rear. The entire front of the radiator is open, allowing air to flow while the car is moving, and with the fan pulling from behind.
Looking at the set up on the Super as it stands right now, I'm not surprised the car had overheating problems. The fan and mounts block a huge portion of the radiator, preventing sufficient cooling. I think I'll be better off with a puller. They aren't terribly thick, so I should still have room to work with the water pump should I need to.
-Kevin
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