Yes, I understand that, but in Georgia at the beginning of the season the water is much much cooler than in late summer, therefore I allow less water into the engine. Towards the end of the summer the water is very very warn, so allow abit more water into the engine. I am doing this to keep the engine running at the same temp year round. Therefore more water pressure coming out of the block to the discharge outlet and to the headers.
I guess I probably dont have to do all of this, I guess what I just really would like to know is, if I can eliminate water going to the headers at idle, via a valve, how important is a T VALVE.
Thanks for the info