Need to know proper hose routing

[YardPig]

I have all the parts to complete my watercooling setup.
Could someone please state the proper routing of the lines from the pump, waterblock, radiator.
I also heard it is best to run a fill/bleed line/T in the inlet side of the pump. Is this correct?

Take care

[Lord Smack]

pump-waterblock-radiator-pump for submergible pumps with res,and inline setups.

pump-waterblock-radiator-res-pump, for inline with seperate water res.

[YardPig]

Thanks. Will let you know how it all goes...

Take care

[Joe]

Lord Smack you are WRONG
flat out wrong

The Radiator should be the LAST THING before the waterblock.

Pump - Radiator - Waterblock - repeat.

Pumps can generate a good deal of heat and you want to dissapate that through the radiator before it hits yer core.

[YardPig]

Jeez, I'm glad I checked back before hooking it all up. Amazing how something that should be so simple has debate. Every little piece of information is available BUT how to hook up your hoses.
Could someone else please second Joe's statement. It sounds like it would be the right way of going about things.
On a closed loop system with no res, is the bleed/fill best placed in the inlet side of the pump?

Also, a mix of 90% distilled water and 10% water wetter should suffice for getting things up and running?

Appreciate the help.

[mkosem]

I'll second that. The pump may generate heat but many pumps can't handle loads of heat. with the setup you describe the hot water from the cpu is going into a reservoir to sit with the pump. I suppose the optimal configuration in spite of that would have 2 radiators one not needing to be able to dissapate much heat.

like this for example:

pump-small radiator-cpu-larger radiator-repeat

this would generate optimal results, however, it requires 2 radiators. The life of the pump will be prolonged by cooling the water before it enters the reservoir. I recommend putting the radiator immediately after the cpu due to the facts that the heat from the pump won't affect core temps much, if at all, and that the pump won't live in as much heat. However, in a non reservoir, closed system, it doesn't matter much where the radiator is, because the pump isn't adding to the temperature of the water, nor is the pump affected by the temp of the water.

--MAtt

[Joe]

Pumps can take heat, and the heat you are talking about is only a few deg warmer then the other side of the raidator.

" I recommend putting the radiator immediately after the cpu due to the facts that the heat from the pump won't affect core temps much"

Wrong.
I tested this with a lil pump like I have in the mini, a big 350GPH Danner, and the 500GPH Hydrothruster, and its all the same, the temp was a min 2 deg warmer average for the small and 350GPH, and ti was 4 Deg warmer with the hydrothruster. Pumps can generate 40+ watts of heat and since they use the coolant in most cases to cool them also, all thats dumped to the water.

Pumps can run perfectly safe at 100+Deg temp coolant.

[Lord Smack]

Well shit Joe this throws me for a loop. You were the one who told me to go "pump-waterblock-radiator-RES-pump, for inline with seperate water res." since I was doing inline with a seperate res. but that was some time ago. You should keep your minions informed when you change your mind. We hang on your every word :0 jk

[Joe]

When did I tell you that sequence?!?!!!?

If you look at ALL my cooling systems all the way back to when I ran Tritum Tech, it was always Radiator before the CPU.

[Lord Smack]

it was a while ago. dont remember exactly. maybe I read it wrong. just gives me more of an excuse to pull my system down and add that flow indicator I've been working on. hehehe

[mkosem]

well, joe, I'm not gonna argue with you but with a small pump(rio200) I noticed no difference between those 2 orders when I tested it about an hour ago. however, when I did it with my other system with a slightly larger pump(rio600) the temps were a few degrees higher, then, finaly, in my old system( www.mindspring.com/~mkosem/pix/old_water/rig.jpg ) I noticed about 5 degrees higher core temps after the water temp stabilized. therefore, in closing, I do aggree with you when the pump is large.

--MAtt

[mkosem]

you should appreciate that "bigbore" system. it has a 1000gph johnson bilge pump rinning in it with 3/4" tubing. My 500gph pump finaly died after 1.5 years of usage as a server(quite good for a bilge pump).

--MAtt

[YardPig]

Well, what is considered "large"? I am going to run a Danner 2 250GPH.
This must be a topic that has alot of controversy over the right way of doing things.
I would prefer to set this up right the first time.

[Joe]

Yard, those danners can run at very high temps so I wouldnt worry about a hot pump. I would run it like this Pump - Radiator - Block

That way all the coolant from the CPU and the pump are cooled before it re-enters the CPU block

The Rule I have used is - let everything else in the system run hot as hell, but keep my block cool. And no running water at 85DegF through a pump will NOT hurt it.

[YardPig]

I appreciate your opinion Joe. I ended up going with 1/2"ID, 5/8"OD reinforced hose. It seems to bend a little tighter than the non-reinforced.
Do you think this is overkill? I though besides the increased volume of water inside the lines, it would be easier on the pump and lower the pressure. I thought this would work for me.
The nice thing about this copper heater core I got is the inlet side has an adjustable valve on it to increase/decrease the amount of fluid flow. It's a real trick part out of an early suzuki jeep. If anyone wants to see a pick, I'll post one.

Thanks again, all the help here is appreciated.

Take care

[Lord Smack]

hey Joe is that setup true for an inline pump with a seperate res ? pump-rad- waterblock-res ?

[jimsnyder]

I think Lord Smack has got it exactly right.

[Joe]

Please some one explain to me in clear terms WHY you will get your cpu cooler running the radiator right after the core? and not before it?

When you can give me evidence that the heat that the pump generates will help cool the core, I will agree.

[mkosem]

it doesn't! but in some cases, the extra heat from the pump hardly makes any difference. In other cases, it makes a big difference. With this POS rio180 I have here, the results are exactly the same both ways.

--MAtt

[Joe]

ok fair enough, then tell me this:

Even if it makes HARDLY a difference, WHY still do it? You are building a cooling system to cool yer CPU better! Why handicap it by bad engineering? Yes it may be a small difference, but it doesnt matter, you are still putting a heat producing device before the block.

There is NO "the warm water will burn out my pump" deal. ( most of these are fish tank pumps, they are made to move warm water)

[Lord Smack]

ok I changed my setup to pump-radiator-waterblock-res. my temps did not change. still 91*f under full load. Although it might be because I had my system optimzed for pump-waterblock-radiator-res. with old setup I used like 2 to maybe 2 1/2 ft of total tubing, now its closer to like 5 ft of tubing so that might affect my temps to.

[imagex]

1/2" hose ant overkill 5/8 like i use might be but it sure works good!!