My 88 240 runs hot when at idle, AC on, and the outside temp is high.

I have seen "heavy duty" radiators advertised but I'm not sure what to make of them. They are either coopper or brass or something like that. I'm used to aluminum radiators, and I was under the impression that they cooled better.

The most important thing for me is that the radiator have a port for an electronic fan thermo-switch. I'm not much of a fan (no pun intended) of the engine driven cooling fan. I've had much better luck with electric fans so far.

I remembe someone suggesting a radiator from Napa -- does anyone know if this has a port for the electric fan switch?

Thanks

-Steve

FYI
Pure copper (397W/mK) has about twice the thermal conductivity of pure aluminium (240W/mK), 3x more than some aluminium alloys (130W/mK) . I imagine a radiator with a high percentage of copper will work better, I just do not know if anyone uses copper in them for other reasons (corrosion) There are definitely designs that shed heat better or last longer. The 240 Plastic ends can be a problem with the plastic becoming brittle. Mine seems OK at 189K Kms though.
Karl

I bought a Nissens 3 Row Radiator from fcpgroton.com... It includes the thermal switch for the cooling fan. I believe this was the best purchase I have ever my brick. ($175) I highly recommend it! We recently took a trip through florida w/ the needle never above half scale -- w A/C.

Matt


'82 DL 143k
'87 760T 132k