yea i started this thread and u know i haev that problem so how the hell did you fix it??
well actually it hasbn't boiled since i put in the new radiator but i haven't ran the car ,uch cuz i want to install a new water pump..

as for the cad thing ill check on that later when i get a new exhaust and anyways im running straight pipes and ovetr rdining the cad. so that shouldn't be a problem in the future

 

I've been reading on here for only a few posts... and decided to cut it to you easy. Drive the car for 10-20 minutes, dont drive it hard, just normal. Then pop the hood, and if you got continuous bubbles, small geyser, or a large geyser coming out of your overflow tank. That means: blown coolant O-ring. Solution-rebuild, or swap. as of tonight I just cranked my car after freshly rebuilding it and everything. I had exactly the same problem you did, a blown coolant o-ring. All this replacing radiator, water pump, radiator cap etc etc... is a waste of time and money, lots of money... And if you keep drivin it you're going to warp the rotors and rotor housings etc etc.. the WORST thing for a rotary is overheating.. If you let the engine overheat, you're in trouble if you don't get it cooled down.. fast...So if you drive it around for a lil bit, then you got air or vapors coming out of your overflow tank, you need a new engine or swap a low milage in... dont go off tryin to fix all these other things, thinkin its somethin else. Its plain and simple...