heater core problems

[MechCD]

I went and upped my CPU speed a whopping 33mhz (1.3ghz to 1.333ghz) and now me reservoir temps are clibing. I may have moved my heatercore fan and not have realized it would affect temps. My reservoir temps used to be around 2F above ambient, and now it goes 5+F above ambient. How do you guys attach your 120mm fans to a 167mm heatercore? Mine is near the top and middle (equal space from left and right) sucking through the heatcore with a small 80mm fan sitting at the bottom middle blowing into it.

crrssssszzzt temps rising. crsssssszzzzzzzzzzt zzzzzt need zzz elp zzssssst close to crssszzzzt meltdown crrrrrssszzzzzzzzt pop snap zzzzzzzzzz come in main cube szzzzzzzztttttt cube 2 is crsssssst overheatin zzzzzzt pop zzzzt

[phil]

Personally, I would put the fan nearest to the water inlet. This way you will have the greatest temp delta and should cool better.

Why not make a shroud for the heater core that will funnel the ait through the entire surface area of the core? I have a big rad, that I have created a shroud for. It moves the 2x120mm fans about 3 inches away from the rads surface. The fans then suck the air through the entire rad. When the fans are connected directly to the rad, you won't get full efficiency as the air right behind the fan has a dead spot....the air would actually look like a donut (if you could see it)...tril0Byte uses this method with his heater core also.

Does this make sense?

[MechCD]

Would you mind posting a picture of your shroud? I understand how it all work and how i would make one, but I need a few ideas on the actual construction.

[phil]

Here is a pic of my old setup with a different rad.

http://homepage.ntlworld.com/phil.harling/rad.jpg
http://homepage.ntlworld.com/phil.harling/radshroud.jpg

I used aluminium, but cardboard and duct tape works just as well....tril0Bytes is a little more sophisticated.

[MechCD]

Ok, so Its just an aluminum box, nothing special.... Easy for me to make with limited cash and tools :)

So if I had my eyes open when i looked at the pics.........

mine would look like this

-------------------
| ---------------- |
| | | |
| | fan | |
| | | | <---- shroud
| |_________| |
|___________|

Are there any advantages in have a sloped one? As in it slopes downward from to fan?

___fan____ ____fan_____
/__shroud__\ instead of this? |__shroud____|
| rad | |rad |

slanted downward from fan straight sides

[MechCD]

Oh poo nuggets, my ASCI upset the board :(

[phil]

That's fine, as long as the shroud covers the entire rad so the air can only come through. It will also have the added side effect of making the fan quieter...a win - win situation.

[Martyn]

Thought I'd jump in here' as I have my heater core shrouded too.
Sorry for the long post, but here we go ....

I decided to build a wind tunnel, as these seem more effective. Although you don't double the CFM flowing through the rad, you do improve pressure. I started by cutting out sheet aluminium with tin snips...

http://www.abbc65.theseed.net/pics/radiator/rad1.jpg

Then bent the Al sheet to form a box around the heater core. I made sure there was at least a 2cm standoff, so there are no dead spots in the airflow....

http://www.abbc65.theseed.net/pics/radiator/rad3.jpg http://www.abbc65.theseed.net/pics/radiator/rad4.jpg

I'm using a Yeong Yang cube server case, so I had to cut out a hole for the rad and make a new back plate. An offcut from a window mod, was a perfect blank for the new backplate....

http://www.abbc65.theseed.net/pics/radiator/rad2.jpg

Ok, so now I've got something coming together. You can see here, how the assembly goes together. I used pop-rivets to hold the shroud together, which was rivetted onto the back plate. I then used thin strips of closed cell foam to seal the edges and a final seal with silicone sealant, makes the whole thing pretty much airtight, apart from the fan holes....

http://www.abbc65.theseed.net/pics/radiator/rad5.jpg

So, all that remains is to paint it up to match the case and install the fans. I epoxied nuts inside the shroud, so all I have to do to mount the fan is screw it on. This makes swapping em a breeze if you need more power, or find you can maage with less (noise)...

http://www.abbc65.theseed.net/pics/radiator/rad6.jpg

Pretty much done. The assembly is fitted into the case with nuts and bolts through the backplate and really looks pretty good...

http://www.abbc65.theseed.net/pics/radiator/back.jpg http://www.abbc65.theseed.net/pics/radiator/inside.jpg

BTW, I refitted the rad with larger 1/2" fittings, which was a bit of a nightmare. If you've ever taken a blowtorch to a rad, you'll know you can cause a helluva lot of leaks. I started about 6 before i got the thing properly sealed. I also refitted the Swiftech with big bore copper pipe to match the rad....

http://www.abbc65.theseed.net/pics/radiator/mama-refit2.jpg http://www.abbc65.theseed.net/pics/waterblock/copper-barb.jpg

The whole lot has 1/2" internal diameter silicone hose, or copper pipe throughout and is powered by an Ehiem 1250 - over 300GPH and silent!

Hope that helps :)

EDIT:
hey Phil, turn the [img] codes on bro :)

[Martyn]

Thanks Phil :)

[siggy]

WOW....Why would someone need this kind of fan. Is it for multiple computers? Is the computer running cooler better?

Or is this just a guy thing? (more power)

[pelligrini]

Originally posted by siggy
Or is this just a guy thing? (more power)

Hammer+Nail=Full Contact ;)

Edit:
Darnit, I thought this was the fan thread.

Tril's H2O setup is really slick. It does really serve a purpose siggy. Keeps his cpu nice and chilly, the bigger fans are quiet too.

[MechCD]

Der. i think i'll stick with a box style shroud :) Nice setup there tril0byte!

[Martyn]

LOL, you could be right about the guy thing Siggy, though it's certainly a disease. I am, unfortunately, incurable :)

But there are practical benefits, especially when overclocking. Tha AMD processors, especially, make a lot of heat. This means you need a fast fan to cool them down. Fast fans do the job, but they are also very noisy. The fan you see in my post, doesn't cool the processor directly, but cools water. The water circulates through the computer, and through a block that is attached to the processor, cooling the block and cooling the processor in turn. This is a much, much more efficient way to cool a computer. Temperatures stay low, and you can use big, slow fans, which are very quiet. So, you get a cooler, quieter computer. It's also great fun building them, which to be honest, is the only real reason for it :)

Oh yeah, it's nice to have something unusual too, see...

http://www.abbc65.theseed.net/pics/installation/solo1.jpg

http://www.abbc65.theseed.net/pics/installation/solo3.jpg

Not many folks round my way got one of these :D

[siggy]

It looks like slime. Are you running slime thru your computer?

Nickelodeon would be proud.

[Martyn]

It's called DyeLite, an additive which glows under ultra-violet light. You put a UV neon strip light inside the computer, then if it leaks, you can see straight away, because the dropletts glow bright green. It also looks damned cool...

http://www.abbc65.theseed.net/pics/blacklight.jpg

Very Borg-esque :)

Do I win a prize for super-geek? :D

[phil]

You only win the prize when you show the microwave shot :)

[wbierman]

Hey- anyone seen my glasses? I can't find the damn things....

[Martyn]

Originally posted by phil
You only win the prize when you show the microwave shot :)

LOL, just for you Phil...

The Microwave......

http://www.abbc65.theseed.net/pics/tinted.jpg

[phil]

Hehe, thanks tril...that is sooo cool :)

[dnar]

[pickup jaw mode on]



I bow down to you guys............. That is just awsome Tril.......:cool:

[Rick_Deadly]

Two thumbs up Tril...

You get the "Overclocker of the week" award again. Even if you posted a pic of that setup once a week, you'd win every week. Look at my eyes, they're green :)

[Martyn]

Originally posted by Rick_Deadly
Two thumbs up Tril...

...Even if you posted a pic of that setup once a week.....

Hehe :) I've been trying :)

[siggy]

Originally posted by tril0Byte
LOL, you could be right about the guy thing Siggy, though it's certainly a disease. I am, unfortunately, incurable :)

:D

Tril0Byte I think you are right about the disease. You got it bad.

Thanx for the pictures. It is way cool.