Pro/Forums - View Single Post - performance related to down sizing tubing, and flow related to smallest ID in loop

pHaestus · 03-28-2002, 03:34 PM

The head would be (I believe) the sum of all the individual resistances. So assuming that you have barbs on the pump, the res/air trap, the radiator, and the water block then there still is an advantage to using 5/8" barbs wherever possible coupled with 1/2" tubing. Doesn't the head get affected by the diameter of the tubing as well? I would think the inside walls would provide some resistance to flow.

You are also operating under the assumption that 1/4" NPT barbs must be left stock. In fact they can be drilled out substantially so that their ID is much closer to 1/2" than it is to 3/8".

03-28-2002, 03:34 PM	#3
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	The head would be (I believe) the sum of all the individual resistances. So assuming that you have barbs on the pump, the res/air trap, the radiator, and the water block then there still is an advantage to using 5/8" barbs wherever possible coupled with 1/2" tubing. Doesn't the head get affected by the diameter of the tubing as well? I would think the inside walls would provide some resistance to flow. You are also operating under the assumption that 1/4" NPT barbs must be left stock. In fact they can be drilled out substantially so that their ID is much closer to 1/2" than it is to 3/8".