Loop finished, only one leak so far, no disaster...

As I said above, after looking at those vids, you simply haven't primed the pump properly for this test loop. In the first vid there is definitely nothing but air in the tube from the bowl to the pump, therefore even though you are pouring water into the res, the pump cannot suck any water up the inlet tube, so it just pumps out the water you pour in and nothing can replace it. All the while the pump is running without water and you're lucky if it isn't buggered tbh. What you want to do with this little test loop is have it arranged like you have in the first vid with nothing switched on at all, then, take the free end of the outlet pipe and suck water through the pump with your mouth until it goes up the inlet tube and into the pump, then put your finger over the end of the outlet pipe and put it back in the bowl. Since the outlet is now below the pump no water should drain out and the pump should be properly primed. You should now be able to switch the pump on and it should pump water round normally. Please google "priming a pump" as well.
 
I acknowledge that the first test loop was a bad experiment, so that's what I did the 2nd one. In the 2nd one, there was no reason for the pump to stop pumping the water round. The res was full, the tubes were full, I couldn't out any more liquid in the res because the level wasn't moving down.
 
Even in the second vid the pump is not primed. The bottom tube is the inlet yeah? There is no water in it, it can't suck air through, centifugal pumps don't work that way, it doesn't matter ho much water you manage to get in the res, if there is air in the line tube it cannot suck water through. If you have another go with the original test setup and do what I say about sucking water through the pump by mouth first, and it still doesn't pump as it should then there is a problem with it.
 
Bubo said:
Even in the second vid the pump is not primed. The bottom tube is the inlet yeah? There is no water in it, it can't suck air through, centifugal pumps don't work that way, it doesn't matter ho much water you manage to get in the res, if there is air in the line tube it cannot suck water through. If you have another go with the original test setup and do what I say about sucking water through the pump by mouth first, and it still doesn't pump as it should then there is a problem with it.
Click to expand...

Even so, he does say that there is no difference when altering speed of pump, so faulty just for that anyway. :)

OP please don't give up. :D
 
Ah, didn't notice that last night, ideally you want the pump set below the res/bowl of water so mavity can feed it to get things started.
 
Well went up to OcUK this morning. They exchanged the kit and the 140 for a full refund. So....

I bought an RX360 and mounted it outside the case for a GPU only loop. I've already got a H100 that performs well. I figured it was the only way I was going to get good temps without drilling the drive cages out and being unable to fit the rad it the top because of space limitations.

Temps are a lot better on the cards. However, I am still getting a huge variation between card one, and card two.

After half hour of heaven, temp on card 1 was 61, temp on card 2 was 51. This got worse after 45 mins, card 1 went up to 65, card 2 stayed at 50.

So with new pump, and taking the cpu out of the equation, and better rad, it can only be one thing, a duff block.

Is that possible?
 
If you haven't run out of water and tubing yet I'd try something like this to narrow it down...

Either swap the cards over and see if the temp difference is still there or test each card/block individually and see if one is constantly hotter.
 
Ironically, that one is running colder. I have to decide whether i just live with those temps on the card or pursue it further. Its whisper quiet now which is the main reason i did it in the first place.
 
You really do need someone else to help you out on this one.

Some of the stuff I've seen in this thread is kinda scary with how you'd handled using the pump etc, and it's no wonder stuff isn't working correctly. No offence, but find someone who can help you before anything else is broken!
 
The only thing not working correctly now is the top card. Yeah, i might have mad a couple of mistakes but i doubt there's been anyone who built a perfectly performing loop their first ever time.

Ill be in touch with ek tomorrow, who'll help me determine why the top card is so hot compared to the bottom. Other than that, the loop is fine.
 
My first loop ran fine first time around 9 years ago... Lol

You seem just like me. Rushed into it head first.

Experience is gained when mistakes are made after all.
 
I think im gonna try a different method of the mx4. Ive been spreading it out on the hot card, and reading around you have to do it in a cross. Didnt come with any instructions like the as5 used to. Least i cant find any. Might make a difference.
 
My first ever loop ran perfectly also.

Read, read, read and watch videos prior to attempting anything a little daunting. That way you know exactly what you're doing.

Hope you get your problem sorted.
 
Monkeyspaz5000 said:
My first ever loop ran perfectly also.

Read, read, read and watch videos prior to attempting anything a little daunting. That way you know exactly what you're doing.

Hope you get your problem sorted.
Click to expand...

Hit the nail in the head there!
almost 90% of the problems I read in watercooling section could have been avoided with a bit of research before plunging in :)
 
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