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Originally Posted by RoboTech
No, both the MCP350 tests were conducted with the same 1/2" ID tubing used in all the others. For the MCP350 and MCP350 Modified, I used a 2" long pice of 3/8" ID tube to a 3/8-to-1/2 adapter right out of the pump discharge.
Theoretically opening up the suction port to 1/2" will let the pump "breathe" a little better, but if that is the only change you make to your existing system I couldn't say how much of an affect it would have. Yes, the 3/8" outlet is still a "restriction" but it does not have as much affect being on the discharge.
My guess - many reservoirs are made with relatively small fittings due to the curvature of the reservoir wall and for ease of manufacture.
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Thanks for the quick reply, I'm confused that the diameters can go up and down so much with out a large inpact on performance.
You will probably gather that I am new to watercooling which is partially true I had a Zalman Resorater for a year the decided to go for a better set up hence where I am now.
I suppose I could run bench tests but I am limited with space and I do not have any other parts I was going to buy 1/2" piping and fittings if you thought I would gain more from doing so.
Thanks again.