Joined: Jul 2007
Location: St. Louis
If you have lukewarm air, chances are your thermostat is bad; and by bad, I mean it is opening too soon, it is weakened usually by age. If it is greater than 2 years old, replace it. I was thinking the same thing when I had the exact same problem, and replacing the thermostat is MUCH easier to do than the heater core. The heater core would have to get seriously clogged with crap before it simply fails to heat.
As for the recores: The end tanks are made of brass as well, remember. It all gets thinner at the same time.
To each their own, but for me, I will always go with new metal over recored metal.
If it were a radiator, i.e. something easily replaceable, then I would go recore without reproach. The radiator in my '66 is original......yes, original. And recored several times!
But for a heater core in the depths of a Fox Mustang dash, I would buy a new one, install it with care, ensure my heater hose restrictor is in place, and swap out coolant every 2 years. This outta get you another 15 years before you need to replace it again.
1966 289-2V C-4 Convertible. 2nd owner, resurrected rustbucket. Factory console and power top, conversion to P/B with dual res MC.
1990 GT 25th Anniversary 5.0 AOD Convertible. SOLD
Last edited by EagleAutosports; 01-19-2008 at 12:05 AM.
Reason: removed questionable content/argumentative section