[Blackeagle]

Since87,

The rads you and I are sending to BillA can add a small bit in having some data, along with BillA's work with Big Momma, BIX ect., to reflect heater core & other rad performances.

Beyond that how to rate the many differant cores? 1 5/8", 2", 2.5" thicknesses. Single or double pass. # of flat tubes per pass.
This area is extremly variable.

Do we want to figure out a way to subdivied the heater cores?

Perhaps figure up the number of a rads tubes X tube length X thickness X2 to get the total surface area for cooling in a rad. But must also consider number of passes and tubes per pass to allow for head loss in narrow double pass vs wider single pass.

A interesting project.

edit:

A second thought: Could also rate the rads by totaling the crossection of the tubes in a rad X # of tubes, this would give a headloss due to total cross sections. Then factor in total length of a rad based on single or X2 for double pass of the number of tubes. The total cross section and total length would then give cooling effectiveness & headloss rate for each rad would it not, while also making the method of comparison managable.