cpu block horror pics :) also need cleaning advice - Overclock.net - An Overclocking Community

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cpu block horror pics :) also need cleaning advice

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post #1 of 18 (permalink) Old 08-10-2019, 08:46 AM - Thread Starter
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cpu block horror pics :) also need cleaning advice

Let's get this out of the way. I used Mayhems Pastel for 4 years and didn't touch it. I'm a terrible enthusiast I'm honestly impressed with now well it did hold up. I had my pump on High and load temps were a little over 60C, so no harm no foul. Just... a marathon week of cleaning ahead.

Things looked pretty much as expected when I opened up the block for the first time.

The black plastic top is in great shape after just rinsing it out, so no issue there.

I scrubbed the copper plate with a toothbrush and tooth paste for about 5 minutes and made pretty good progress.

I'm not worried about the oxidized patina, but there is still some hard gunk deep down in the grooves. I have a Mayhems Blitz kit (parts 1 and 2) coming, but I was wondering if I should treat this with a vinegar soak or something first. Seems part 1 is just for the radiator, and part 2 needs to be pumped through the loop for a period of time. Is part 2 going to be enough to get this out, or is it just a pH neutralizer? Should I rig up a way to soak this in Blitz part 1?

Any thoughts are appreciated. Pics attached. Thanks!
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post #2 of 18 (permalink) Old 08-10-2019, 10:20 AM
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boil the cooper piece only on water let boil and scrub it up

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post #3 of 18 (permalink) Old 08-10-2019, 10:33 AM
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Honestly, it isn't that bad. I have a 480 rad that I used for 6 months with some color additive that STILL ends up fowling my blocks and res with a slight green tint. It cleaned up just fine with warm water, dish soap, and a few minutes with a tooth brush. This one is nickel plated, but I have cleaned copper blocks the same way with good performance results, even if the copper still shows some discoloration. If you want shiny copper block, you are going to have to chemically clean it. Salt/flour/vinegar mixed into a paste works real well if you are willing to go through the trouble.

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post #4 of 18 (permalink) Old 08-11-2019, 09:25 AM
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The crude under opening in jet plate looks like poor initial flushing of RADs, in both cases, just my opinion.

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post #5 of 18 (permalink) Old 08-11-2019, 09:51 AM - Thread Starter
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Quote: Originally Posted by apw63 View Post
The crude under opening in jet plate looks like poor initial flushing of RADs, in both cases, just my opinion.
Could very well be. For the original build I just flushed with water and shook vigorously for about half an hour, but no chemical treatments. It's an alphacool rad too.

Ok, so I tried boiling water and scrubbing with hot soapy water and a toothbrush again, got a little more out. I got a little over zealous though and got out my feeler gauges to scrape out each groove. It got a bit more grit out, but I managed to swipe past the groove in a couple spots. I can feel these with my fingernail. Do you think this will be an issue when I put some water through it with a pump?

Thinking I might "lap" this grooved face with some progressive grit sandpaper to get the scratch out. ...maybe.

If anyone is curious, the grooves are about 0.008" wide, and a 0.006" feeler gauge scrapes them out pretty good
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post #6 of 18 (permalink) Old 08-11-2019, 09:57 AM
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if I'm reading properly, not the scratch on those tiny microchannels won't make a difference. and please no, do not sand the channels.

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post #7 of 18 (permalink) Old 08-11-2019, 10:03 AM
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Other than aesthetics the condition it’s in now will have no effect on performance. You could try the catsup treatment.

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post #8 of 18 (permalink) Old 08-11-2019, 10:08 AM - Thread Starter
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Quote: Originally Posted by skupples View Post
if I'm reading properly, not the scratch on those tiny microchannels won't make a difference. and please no, do not sand the channels.
No, I mean where I pulled the feeler gauge through and scratched the plate right under where the gasket sits. Wasn't sure if that would cause any leaks.
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post #9 of 18 (permalink) Old 08-11-2019, 06:19 PM
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As someone who has the exact same CPU block, just get some lemon juice (fresh squeeze seems to be more potent than the stuff in a bottle) and soak the copper plate in it overnight. In the morning you will have a green soup and most of the black will be gone. Use a tooth brush and lemon juice to scrub anything left over and make sure to flush out the channels well.

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post #10 of 18 (permalink) Old 08-12-2019, 05:57 AM
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Use the Part 1 on the plate and only do it for a small amount of time, keep an eye on it, it will remove that crap pretty well, but make sure you PH neutralize it afterwards.

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