Keith,
The heat exchanger I have is designed to be mounted horizontally,
with the expansion tank (and radiator cap) on top. So rotating it is out.
Thanks for the response...good idea.
NormB

On Fri, 29 Oct 2004 06:47:24 -0500, "Keith" wrote:

I would put the pump before the heat exchanger. Can you just rotate the
exchanger so the zinc port is on the top? The water inlet/outlet should face
up anyway, so that the cooling water keeps the exchanger full.