That is what I did, a heater core (new) from a Ford Escort measures 7"x7"
and has straight inlet tubes, and a 5" cooling fan from McMaster Car blows
air through the core to a distribution box.

Bill Schertz
KIS Cruiser # 4045

Nice work Bill. Who built those flanged tubes?

Is the core tough enough to tig weld AN fittings to it?

Paul Lamar

Forgot to comment on flanged tubes. They are from Aircraft spruce or Wicks, just drilled side of housing and rivited two of them in, used nutplates and screws for third.

 Bill Schertz

KIS Cruiser # 4045

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