>>> This looks great. Now all we need to do is find
     >>> out where we can buy them. I am working on that.
     >>>
     >>> http://www.csfimports.com/home.asp
     >>> --
     >>> Paul Lamar ...No rotor no motor.
     >
     > I've been AFK for a few days, or would have come in on this sooner.
     >
     > Back in my misspent youth, I worked for a division of Chromalloy. We
     > made radiators, cores and custom heat exchangers -- for a while,
    we were
     > THE source for new exchangers for your P-51 or P-38, not to mention
     > radiators for various antique cars.
     >
     > Radiators are SIMPLE. They are just a way of bringing coolant and
     > airflow as close together as possible while still keeping them apart.
     >
     > They are primarily of two types: crossflow and vertical flow. The
     > advantage of vertical flow is that sediment and other solids
    falls down
     > into the bottom tank. The advantage of crossflow is that you can
    make a
     > radiator that goes all the way across the front of the car.
     >
     > There is a third type of common automotive heat exchanger, not
    generally
     > considered a radiator but that's what it is anyhow -- or, more
     > precisely, a radiator is just a subgroup of heat exchangers --
    and that
     > is commonly known as a "heater core."
     >
     > Yep, that's right, the forgotten little "radiator" under the dash. It
     > is just as strong as the big radiator that won't fit into your
    airplane,
     > and they are available in a bunch of sizes and configurations.
     >
     > Go find your friendly, neighborhood radiator shop, the kind that has
     > been there so long the wooden structure is starting to petrify.
    Take a
     > look at the book they order replacement cores from. They have
    long and
     > short, rectangular and square cores, even some which are
    essentially a
     > cube. The tanks and tubes go every which way, and if you can't find
     > exactly what you like, they can take a bare core and build it into
     > whatever you need, and probably supply the header tank as well.
    If you
     > get the guy interested in the project, he'll grab that ball and run,
     > because it's not just another Chevy!
     >
     > So have some idea what you are after, but still have an open mind
    when
     > you go see them, because they are the parts experts. The guy at the
     > auto shop counter only knows how to get the box the computer told
    him to
     > get, the radiator shop guy can tell you why the one from the '65
    Mustang
     > is better than the one from the '67 Mustang (or vice versa).
     >
     > Keith Wood

    Keith,
    What's the difference between a radiator core and an
    air-conditioning core.
    George (down under)

    George,

    The major difference is around 300 - 400 psi in the a/c core v.s.
    around 20 psi for a radiator.  A/C cores are thicker walled round
    tubes to prevent them from distorting when subjected to the hgh
    pressures in the system.  Radiator cores can use a rectangular tubes
    with thinner walls and will have more surface area per square inch
    of radiator surface, hence better heat transfer.

    Joel

Aircon cores are also generally a thinner package, while heater cores
are significantly thicker.

Keith Wood

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