Helpful ReplyMCP655 Vs. two 3x120mm radiators (need some advice/help)

So this is the setup
Res----->rad------>rad-------> pump----->cpu water block------> mobo water block------->back to the res.
 
So the Res is feeding the Radiator. then the pump is taking the cooled watere from the Rad and pushing it into the cpu. the CPU pushes it into  EK mobo block. this water then flows back to Res.
 
Parts:
Two 3x120mm Radiators (inline)
One MCP655-B
One Koolance reservoir
One Koolance CPU-350 WaterBlock
One EK full motherboard WaterBlock (4-way classy)
 
 
 
Now i have about two-three years of hands on experience with MCP-655 pumps, but i never tried to get the thing to pump so much with only one pump. Do I need a 2nd pump to get this loop going?
 
I think it maybe that the 2nd rad isnt filling up and has a air pocket i cant get out.
My solution to this is to buy one more pump to put after the reservoir and before the radiators.
(i know from my last PC that two MCP655b pumps inline or even in the same loop will have great flow and POWER)
 
 
 
Computer is in my ModRigs.
 
Help me out what would you do.
(also note i cant fill the radiators before hand.)
i also got the other two loops in the system going to problem.
 
 
 
 

Try putting the res before the pump. The 655 should have NO problem pushing water through that setup.

 
I think maybe the water cant get up that loop and flow between the two radiators at a good rate.
 
So maybe a pump between the two or before the whole rig?

tbturner47

Try putting the res before the pump. The 655 should have NO problem pushing water through that setup.

So have it suck water from the res and push it into the radiator?

Yes. My theory on what is happening is that the res is killing your flow.
 
See, the res is full of standing liquid, so when the other water reaches it, it slows your flow. By having the res before the pump, it will continuously feed it. Therefore, there will be less restrictions in your loop. See how that works first.
 
The other problem could be your pump is either not pushing like it should or quite possibly isn't enough. (Tho I doubt that is the case). If you switch the location of the pump and you are still seeing a problem I would test the pump for functionality.
 
The last thing to do would be buy another pump

that worked btw
 
took the system apart
tested the pump in my sink
moved some tubes.
 
and BANG loop was runing at 100% in less then 1 min.
 
Thanks.

Yeah pump before res, and so that gravity can feed the pump and you're good to go.
 
MCP655 is a helluva goo d pumper.
 
 

seth89

that worked btw

took the system apart
tested the pump in my sink
moved some tubes.

and BANG loop was runing at 100% in less then 1 min.

Thanks.

Glad to hear it
 
And you're welcome