https://www.rx8club.com/search.php?searchid=3789405 only came up with 3 results, none of which seemed relevant.

I'm wondering how much of a pressure drop (in the cooling air flow) we see over the radiator.

I'm sure somebody can at least guestimate. Espescially those offering higer performance radiators.

I need to do some calcs for my new project, and would REALLY appreciate the help.

 

You want to know the differences in the air pressure infront of and behind the radiator as a measurement of the flow restriction the radiator features represent?

 

Yes. Don't know why I couldn't come up with nice concise wording like that. Thanks.

 

I guess you could flow bend the radiator to determine a K value for it as is often used for pipe features. Then, should you stack 20 radiators in a row, you could predict the amount of head loss in a pumping system. To be honest, though, the radiator is mostly going to be measured in it's heat rejection performance rather than it's flow properties.

To test that, you could feed it with X flow at Y temperature with either fixed fans attached or a given air flow and measure the out bound temperature. A better radiator will yield cooler temps at exit given the same air feed. Or, you can do like some drivers do on here and just hook it up and drive and see what kind of coolant temps you see. That tends to be an easier mode of testing.

Now, if you are calculating this for a school/college project, you're going to be disappoint in the lack of data.

 

Crap. So, can anyone point me to a DIY flow bench website. Cooling capacity is great info. But I NEED to know the flow restriction for an engineering project.

 

http://www.tractorsport.com/cgi-bin/.../ikonboard.cgi