82 Supra overheating
 

My car seems to be overheating, I have replaced thermostat, waterpump, hoses, flushed reverse flush, replaced clutch fan, everything the last thing to do is the radiator. When i drive it slowly creeps up to the red line and just sits there turn on the heater and nothing. I am thinking I need the radiator serviced. These aren't aluminum are they?

I dont think there aluminume, My mk3 is over heating i replaced the thermostate and that kind of fixed the problem it still wants to try to over heat, but when it goes up it will decline 2 seconds after it starts to over heat.

this might be it.
 

You might consider replacing your radiator. My brothers mk2 was doing the same, he checked all and flushed but his car would still overheat. Sometimes the ridges inside the radiators get clogged and dont circulate the water the way it should. After picking up a good radiator at the junk yard he had no overheating problems ever since.