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Well that was a complete nightmare...

post #1 of 36
Thread Starter 
Well guys, I don't know if any of you remember my previous "shopping cart" threads, but I ordered all my parts, and began assembly two days ago. Today, I completely assembled the loop, started leak testing... and dear god did it leak. EVERY fitting but the ones on the CPU block leaked around the O rings, and I believe I know why...

See the pictures of the barbs down below.

The O rings are NOT staying under the barb when I tighten it, and those are NOT very tight. I can still almost loosen them with just my fingers. Regardles of tightness the barbs were simply screwed up.

The barbs that I used were two different sets, but both leeked. Worst of them all were these barbs.. http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_346_422&products_id=24061 as well as the barbs that performance-pcs.com included with their other components. For some reason the O ring on these barbs were huge, and wouldn't even stay under the thread when screwing them in.

So what should I do? I'm definately going to be ordering new fittings, but am I doing something wrong? I finger tightened them and then gently finished it off with an appropriate sized wrench until tight. But no matter what I did the O rings were all screwed up, see the picture below for more details.

So right now, I'm thinking I'm going to pick up some compression fittings any brand recommendations? Any general tips on assembly that I might be botching?

Also, I believe it was because the system wasn't well sealed but the DDC 350 pump I had didn't seem to be filling the system well... It took numerous on and off's and such to get it to fill much of the system, it seemed to really struggle to get past the first rad.

For those of you who never saw my initial list, my parts are:

MCR-320 swiftech rad
MCR-240 swiftech rad
2 HK watercool GPU blocks as well as a Heatkiller Rev3.0 CU block
DDC-350 pump with XSPC res
Primochill 1/2" ubing (3/4" OD)

I believe that's it... Either way, I'm just a wreck after dealing with putting this whole system together... then tearing it all down. If anyone could toss me some advice I'd love you.

Thanks,
GA
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post #2 of 36
Dont give up your hopes! I had also leaks and couldnt run PC for whole 3 days!
Order new fittings and try to compensate the old ones in the store by sending them some pictures of leaks and how much time you lost coz of that.
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post #3 of 36
Getting air pockets through 2 rads isn't fun. Not trying to be obvious, but could you be over tightening your fittings?
post #4 of 36
You could try to go to a hardwear store and ask them for a O ring set and see if you can put on a smaller size see if that works.
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post #5 of 36
If you don't want to wait on new fittings you can take what you have up to a hardware or auto parts store and try to find a more appropriate size O ring. They need to fit flush or even a tad snug over the threads and be of a large enough gauge to fit snugly in the channel.


Also, waiting on pics.
post #6 of 36
Also it did sound like you did over tighten them because they shouldn't pop out from under the fitting just my opinion.
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post #7 of 36
Any time I have had a leak, thankfully only a few times, knock on wood to the watercooling gods, it has been from over tightening the bars. Now I hand tighten till and I cant screw it in anymore and then use pliers to turn 1/4 revolution. You can also use 7/16' tubing too. It will be a tight fit but soften the ends of tubes in boiling water first and they go on great. Good luck. Compression fittings can be very costly. You could also run to a big box hardware store and get more o-rings for cheap.
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post #8 of 36
whew..man..i have never had any leaks..::knock on wood:: i feel very fortunate biggrin.gif i'd take thos barbs up to the hardware store..find o-rings ..maybe even rubber washers that fit..i know there's not much thread there..how about plumber's tape?
 
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post #9 of 36
If all of them leaked, it is most likely user error due to over tightening.

Just loosen them all up a bit and assuming you didn't break the o-rings all will be well. Loosen until you see o-ring slip back under.
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post #10 of 36
Thread Starter 
Hey guys,

Just realized I forgot to link the photo haha.

In regards to over tightening I really don't think thats the issue. I started with only finger tightening and a 1/2 rotation turn with a wrench. With just that, they leaked... So as a result I tightened them. Either way they leaked frown.gif.

In the end though, I'm pretty sure I'm going to do one of two things, get new O rings or compression fittings. What would you guys recommend for compressions?

The picture would be me tightening them to an extreme. Even when MUCH loser with the O ring barely compressed they leaked...

Thanks,
GA
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