87 rx-7 overheating

[slip15]

i have a 87 rx-7 that overheats at 55-65 mph speeds. i am new to rotary motors so i dont have a clue on where to start and what to replace... what should i start with to replace or fix?? also it is not the turbo rx-7 but i am wondering what it would cost and how much work to make it turbocharged

[black rocket]

When was the last time you changed your rad cap? Make sure your cooling system has been purged and functioning properly.

Might want to ck/replace your t-stat.