Quote:
Originally Posted by cmoc-bob
Fast Monty's Garage on YouTube did a good presentation on connecting both cylinders head outlets into the heater/cooling system.
He also showed his test results, and the "more flow" isn't always better. Note the part(s) where we regulated the cal head flow into the cooling system. And the effect hose sizes had......
You can pump too much fluid too - and the heat exchangers don't have time to work.
Look at some modern cars and note the smaller radiator hoses, outlets, etc. Effort to slow things down.
Fast Monty also did some good tests on electric fans.
DeWitt's makes some quality radiators too - they note the BTU capacity of what you are buying.
Good luck !
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I love Fast Monty's content. I think he does a great job with his testing to take things beyond the beat of the tribal knowledge drum.
I don't agree with the slower flow theories tho. The laws of heat transfer and physics don't support it. Q=mC(deltaT) is chiseled in stone.
Take examples from the Pontiac: stepping up in cooling needs got you either bigger radiator with more surface area/rows, a higher capacity fan, smaller water pump pulley, or a combo of the three. The bigger surface area increases the "C" in the equation, while the last two increase the "m", or mass flow rate, of the equation.
Keep in mind that there are multiple heat systems at play. There is the heat source (engine) and the heat sink (radiator). If you slow down flow to get more cooling across the radiator, then you also limiting the heat that can be removed from the engine. I haven't seen the Fast Monty episode you mentioned, but I will look for it so I can reconcile my understanding with his results.
I am in the school of more flow is more better.