eds66bronco
Bronco Guru
FWIW from a very reliable source:
Benefits of using aluminum radiators.
1.) Wider tubes make more contact with the fins. (Greater tube-to-fin contact = better heat dissipation). For example an aluminum two (2) row 1" wide tube core has only one (1) gap (non-contact area) between the two tubes as compared to a four row brass and copper core has a total of three (3) gaps, one gap between each of the four tubes.
2.) It is true that copper dissipates heat faster than aluminum but copper/brass radiator cores are not 100% copper. The copper fins are joined to the brass tubes with solder, the solder acts as an insulator and slows the dissipation rate.
Heater Transfer Coefficients
Copper = 238
Brass = 72
Solder = 12
238+72+12 = 322 / 3 = 107.3
Aluminum and aluminum braze = 111
any chance you can post up some shots of how you've got yours mounted. i don't want a repeat of what happened last time and if yours are holding up, i'd like to use your mounting method.
again, i still don't see how it is possible for the tubes to have flexed and cracked without the tank/tab area cracking first. someone please explain this to me!!