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HEATKILLER® GPU-X³ 79X0 Leak, Possible O Ring Issue?

post #1 of 10
Thread Starter 
Hey all, putting together my first water cooled setup and like the beginner I am I made the mistake of detaching the block from the mount/input and output holes and I'm wondering if it was that tinkering which has now left me with a leaking GPU block. The fluid appears to be coming out the bottom of the block which has me a bit puzzled. I'm wondering if I could have somehow lost the O-Ring from between the mount and block (picture attached) or if there is even meant to be one there or not, because To my eye I've attached everything else correctly. Hoping someone with a better eye/more experience will be able to point me in the right direction smile.gif The card is an HIS Radeon HD7970 3GB, which to the best of my knowledge is compatible with the block (seems to fit just fine, too).






Edited by BigSP - 1/8/13 at 10:20pm
post #2 of 10
Is you picture of the side of the block where the g1/4 threads would connect on a separate piece? Namely where the black ported piece connects to the main gpu block?

If so, yes there should definitely be an O-ring there.
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post #3 of 10
Thread Starter 
It is indeed. Cheers so much for the incredibly speedy response mate! Looks like I'll have to look into shaping (and getting to stay) an O-Ring for that bit.
post #4 of 10
Did it not come with one or did you lose it? May want to try contacting the manufacturer for a replacement either way.

Also silicone grease does wonders in getting those tiny odd shaped o-rings to stay in place as you re-install blocks.
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post #5 of 10
Thread Starter 
I seem totally unable to find an edit button for my previous post but I meant to enquire if the O-ring should be going around those two holes in the top photo? (that is what I'm assuming) or if I should have one around the little ditchy bit where the thermal grease is?
post #6 of 10
It looks as if there is a groove it should be sitting in. Looks to circle the two long oval holes, but be inside the threaded holes that you would use to attach the black port piece.



Also, edit is in the bottom left corner of your post. Little pencil next to the red flag.
Edited by teamrushpntball - 1/8/13 at 10:58pm
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post #7 of 10
Thread Starter 
Not sure how I missed that edit button, long day at work I guess. Unfortunately the O-Ring doesn't seem to be in any of my leftover packaging so I've sent the manufacturer a question about a replacement. Exactly where I was figuring it would go! Hopefully get a spare, pop it in with some of that grease and leaks be gone. Cheers for your assistance mate!
post #8 of 10
No problem. Goodluck and have fun.
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post #9 of 10
Get a direct replacement from Watercool.
When fitting,be careful not to catch th o-ring as you re-fit that connector,they are easily damaged.
teamrushpntball's comment on silicone grease is sound,it will make it much easier.

Or...


I have a method for these tricky o-rings.

Get the o-ring in the groove at one end.



Slide the block piece over the end you just placed,after pulling the bolts out of course. You dont want to snag the o-ring and damage it.



then bolt it down...simples.
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post #10 of 10
Thread Starter 
After finally receiving the package of O-Rings from germany I find that none of them seem to fit and won't shrink in any kind of water; plus the other O-Rings I have on hand just won't stay put even via the use of some silicone grease frown.gif

Additionally, a grand idea with the fitting there B Neg however the top bit of my block is currently fitted very firmly to my tubing and as such It would open up a barrel of issues for me to undo them. Just wish the o-rings I have fit as snugly as the one you have in the pictures :S
Edited by BigSP - 1/22/13 at 12:40am
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