Well you use 1-3/8 outside diameter aluminum pipe between water pump and
rad. That is
two and between rad and water pump so that is two more with two spares unless
of course you are using two rads. You weld or bond these to the 1-3/8 OD
aluminum pipe.

Sorry for being so dense on this one, but in your included picture there is
one in the
middle of two joined pipes, and the wiggins makes up the joint. In your
description above
you say two per pipe run. Are they on the ends, with 1/2 of each coupling
welded or
bonded to the radiator / water pump / block (water outlet)?

Yes.

And by inference from the above I also assume that the wiggins is for when
one chooses
to use solid aluminum pipe rather than rubber or silicon hoses?

Thanks,
David

Yes. The wiggins allows several degrees of axial mis-alignment and a 1/4 inch
or so plunge for pipe expansion. It is advisable therefore to use two. One on
each end of the pipe. This minimizes vibratory bending stress on the rad neck.

Paul Lamar
 
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