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Originally Posted by jaydee116
Sounds like an experiment! Take the Cascade and plug some of the outer holes and see what happens. Theoretically if the pump is decent it should cause an increase in velocity in the remaining unplugged jets and may cause a performance increase eh?
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Made a cut-out that is about 1.5mm larger on each edge over the Barton AthlonXP core size (i.e. an 17x10mm rectangle). It effectively blocks off about half of the tubes. The blocked off tubes do receive a small amount of flow as the water flows through the chamfers between the jet intakes.
After some testing, I'm seeing basically at least a full 0.5C improvement with the Iwaki MD30-RZ pump, which I guess is about as much as I would expect.
Re: the XXX. The program is written up and I fixed/tweaked a few things. The machinists won't get time to run until about 10 days away, and even then it's a "maybe". They are being pretty nice to me with the prices they're charging so I can't complain too loudly if higher paying customer jobs hold things up a bit.