Last week I asked a question about the various pressure (radiator caps) used
on vertical and cross flow radiators. We all know the early vertical flow
radiators used a 7 pound cap and the later vertical flow radiators used a
higher capacity cap. Some respondents to my early question indicated the
top and bottom tank can actually "bow" out from excess pressure. I don't
understand why the vertical flow radiators are more susceptible to this
pressure sensitivity? Aren't the horizontal flow radiators susceptible to
the same thing? My vertical flow is a soldered unit, the one on my 89
Mustang is a "glued" one. How is it that a soldered vertical flow radiator
(1965) is more susceptible to pressure that a glued (1998) horizontal flow
radiator?
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