Project: make it a double

[Alexontherocks]

THAT is sooo kicka$$!!! Maybe if you mount the whole system on the front of your car and hire a driver, you could bench while cruising on the highway!! Or wait, grab some tt turbochargers and incorporate those into the loop, muahahaha.

Unfortunately any liquid is unsuitable to be compressed but you can bet Chuck Norris's flying high kick I would have if I could have...

[PCduster]

very cool project!

Could you explain in a little further detail how you rigged up the rads to use those 1/2" fittings?

I had an idea of turning some aluminum down on a lathe to match the i.d. of standard automotive radiator hose, then drill/tap the center for an EK or simliar fitting to mate up to it. Then just use the automotive hose to go from the radiator to the turned piece. I could do it at work, and the only thing it would cost me is the cost of the tap(don't have the correct tap size at work).


Also, is there any give on the pumps you used? Maybe a sligthly more expensive, although quieter, pump you could use for this type of application? I typically water cool for sound levels, and it always has been a lovely idea to me to use an automotive rad. Just never thought I could get a quiet pump to fit the bill.

I took a break from watercooling when I got these GTX260s, but I am gathering parts now to move back into liquid cooling. It would be very cool if I could go a route similar to yourself for my next setup.

[Duh]

Unfortunately any liquid is unsuitable to be compressed but you can bet Chuck Norris's flying high kick I would have if I could have...

hey, have you read the pms I sent you a long time ago??

sorry for the OT

[Alexontherocks]

yes....and have replied to every one.

Have I missed any? If so I am sorry.---


As for the rads...

I simply went to a plumbing shop and bought a set of fittings which helped me shrink the inlet and outlet from 1" to 1/2". On the male threaded adapter I then screwed on the 1/2" barbs.

As I recall the adapter went 1" to 3/4" and the barb had a 3/4" female thread to 1/2" hose fitting.

All the connections were sealed with teflon and bisonite.

Bisonite is a epoxy glue I found to be most resilient even in harsh conditions (especially humidity). Left everything to set for 24h and then connected the whole thing to the block and pumps. The adapter is an "elbow" one basically turning 90° and letting me run the tubing without bends. Go to your local hardware shop (plumbing hardware) and explain the situation. Either metal or PVC, you are bound to find the correct stuff.

As for the pumps. You are right (I think) that there are more suitable pumps for this kind of application in terms of noise to performance. However I suggest at least 6m of head pressure if using an injector block.

In my setup the water travel through 2 car rads, against gravity and through 250 tubes through both rads (180 of which are just 2mm wide) You can see that pressure drop might be an issue. I found that the benefits of running 16m of head rather than just 8m is trivial to nonexistant. Also the heat dump outweighs the benefits in my setup (now entirely passive).

You might be able to get good results with two ddc or some other "weaker" pump with a second unit in series or you might just try and see where that path takes you. I am honestly unsure about the correct approach since I went overkill right away.

The iwaki is quite silent actually. You can hear it but it is a low hum rather than high pitched whine so it suits my needs.

My results are impressive. Right now with an ambient of 21°C I am folding 3.6gh @ 1.5v on my q6600 and my temps across all cores are between 36°C and 40°C. this in an entirely passive setup. If I were to turn the 4 (four*) fans I have to induce convection movement between the rads I get a max delta of 10°C at most.

I estimated that I may have 500w of headway in a passive setup (stretching it) and in the excess of 1kw with a full array of fans. Probably 1 rad was sufficient but 2 reasons pushed towards a double system:

1) this is xtremesystems so I felt compelled

and..

2) it is the most efficient design given my situation. I had space for two under my desk, the pump is able to cope with both easily and any air moving thorugh the rads is enough to let the 2nd rad express its potential.

I hope I have answered your questions. If you check my pics You will be able to spot the fittings and the wy I mounted them. Also for any other info PM me, I will gladly help any way I can.