The radiator I use is 18x18x2.5 core, they are welded with no glue
so excellent for making custom units.
   If you are interested I have a 80,000 BTU fluidyne heat exchanger I
would sell for $200, I tried it but overheated the water as I only had a
15x18x2.5 radiator and didn't want to modify the cowling for a bigger one.
   Ken Welter
--------------------

This is another good data point Ken.  Also, thanks for the offer on the
Fluidyne exchanger, but I just haven't decided which direction I'll go yet.


Cheers,
Rusty