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Message
Excuse my extreme rotary newness, but what are "parallel
cores"?
Thanks,
MikeJ
Consider
yourself excused :-)
Lots of folks
use AC evaporator cores for radiators, and it typically requires two of them to
cool a 13B engine. The plumbing options are "series", where you flow
from the engine into one of the cores, then out of that one, into
the 2nd one, then out and back to the engine. "Parallel" would be where you come out of the engine,
then use a Y or a T to flow to both cores at the same time. On the
outlet of the cores, you Y or T them again, and go back to the
engine.
The Parallel
method offers less resistance, thus a theoretically higher flow rate.
It also puts the hottest coolant in contact with more cool air than you would in
series. This should clearly be the preferred method. The downside is
the extra connections that are required, and the fact that sometimes it's hard
to make the water flow evenly between the cores. For example, if you
need a few more turns, length of hose to get to one of the cores, the other one
will probably flow more coolant. In and extreme case, hardly any coolant
will pass through the more restrictive core. Series makes sure that both
get even flow, and simplifies the plumbing.
Cheers,
Rusty
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