First Get a Helms or similar manual...I don't care how many years you worked on a Honda...Fucking Chris Rado and Steph Papadakis always had a Helms Manual in their Trailer when they were running 8's and were at the top of their class...

Now, did you use the right Head Gasket? Your car will overheat if the water/coolant isn't flowing into and out of the engine...

Your radiator is not leaking, the hoses are not clogged, the thermostat is brand new and is installed correctly, the fan is turning on when it supposed to, the radiator cap is opening when it overheats and is allowing the overflow bottle to do its work, the hoses are not leaking, the heater core is not leaking, the water pump is not seized up, All the Engine Coolant Temperature Sensors are functioning correctly, Water/Coolant is at the proper level...All these are things you should check off as you inspect your cooling system...

Is your temperature gauge just pegging to the right? Check to see that its not a bad sender...If I remember correctly, if its bad, it will peg to the right and if its not connected, it will peg to the left...

Zee