BAH! I hooked the modded pump up to my direct die watercooling, and as it fired up and the bubbles slowly cleared I could see a line of bubbles going back down the "weak" outlet tube into the pump (water circulating around and around the pump and the Y)
My direct die block is a pretty extreme restriction, and I'm still getting sufficient flow through it, but it looks like my work's not over yet...
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feel free to icq/msn me, I'm always willing to toss around ideas.
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