db8acura

I have a Gsr head on a b16a2 block. I put the Gsr water pipe and thermostat Housing on the block. Does that make a difference? The B16a2 block doesn't have the Oil cooler on it so i just put the tube straight to the block. Just trying to figure out the plumbing because my headgasket keeps going bad and the coolant is just not cycling right. I resealed the water pump (which was brand new), replace the thermostat, Radiator, new o-rings on the water pipe, and resurfaced the head. You think it could be a bad radiator cap or hoses? Need help.. Thanks..