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Old 14th February, 2006, 11:21 PM
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Tube reducers

How dramatic is the effect of reducing 1/2" tubing to 3/8" and back up again?
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Old 14th February, 2006, 11:25 PM
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Simple answer: About 1/8"

Real answer: It depends on the rest of your system.
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Old 15th February, 2006, 02:14 AM
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going from 3/8 to 1/2, the potential flow almost doubles, so depending on how the pump deals with the backpressure, as well as whether your rad has tanks or not, and if you use a res, add in the block design, and you got a seriously complecated question there.

I'm using a MCP655 and Koolance blocksm cpu in 1/2 and 3/8's fittings, and the two gpu blocks are 3/8th's. I got the best temps by splitting the 1/2 to 2 3/8 compression fittings(which actually make the ID of the fitting less the 3/8th's), and running the cpu on one side, with the two gpu's on the other, then a "y" back to the pump, stopping @ a res first, of course.


But that was my set-up. yours will probably differ, so things may vary. the biggest thing, to me, anyway, is the pump.
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Old 15th February, 2006, 04:38 AM
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i was looking to go 1/2" in the cpu block, and 1/2" on the pump, and 3/8" on the rad...using a T and a fillport. If the pump won't take it well, then I'll just go with a 1/2" rad. Anyone have a spare? Or other thoughts?
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