Les, from 2nd hand information given to me, the Thermochill 120.x rads are 24FPI and 32mm thick in the core, with 8mm in-between each flat tube. Tubes are 2mm wide (so 10mm from tube center to tube center).
In comparison, the Honda radiator is 13-14FPI, 29mm thick with 10mm in-between each flat tube. Tubes are 2mm wide (so 12mm from tube center to tube center).
Just wondering how that all fits in with matching BillA's data to the air-flow PD's you're calculating with the other rads. I assume that you've probably already made some adjustments?
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