Go back to Mike Gs advice. best of the bunch. logical and accurate.
Speed up the pump and fan at idle. If it onley clin mbs otta site at idle ten that is what s worng. Even 1/2 inch on pulleys will make a huge difference.
And now for a trick i use often. if the car overheats at idle and you are not able to get it cooling with normal tricks you willl be tempted to install an electric van . ou can use a use one from a minivan or something at the wreckers. Some of te AC condensor fans run real fast.
using a relay hook the trigger part of the relay to your brake light circuit.So that the relay is energized any time you have the brakes on. Wire the otherside to the battery Positive and then feed the output of the relay to the fan Positive
The only time the temp goes beserk is at stop lights in traffic. Now when ever you apply the brakes like at a stop light the electric fan will run and bring cool refeshing sir through the rad reliveing the heating caused by no air flow while sitting. Still though you will probaly want to speed up the water pump too. In fact i would do that first then use the electric as a last resort.
Why does the engine run hot?
May need more advance at low rpm for one thing. A dist recurve could help here. Some cams are prone to running hot. I have cured a couple fo cars over the years geting rid of a crap cam in favour ofa good one. Generic or no brand name cams are usually crap. They dont all overheat but some will. A 160 stat might help.
