Re: Change of radiator core affecting cooling performance in 1949, 23rd series

Posted by Joe D'Agostino On 2017/7/11 1:14:15

You are right. The "factory design" should be sufficient. So in my case, the radiator size was increased and as a result, the flow rate inside of the radiator went down. As the flow rate goes down, the fluid flow changes from turbulent flow to laminar flow. And we know that turbulent flow is better for thermal transfer. More heat is removed in turbulent flow than in laminar flow.

This situation is exacerbated at idle when the fluid flow is the slowest.

I am trying to get back to the factory design which is a thinner radiator with fewer columns so that I can get the flow rate up at idle.

In my case, engine has been rebuilt including new water distribution tube and new water pump. I have scanned the engine front to back.