OK, first off the particular loop configuration you have depends on many, many things, the type of components you have, the size of your case, where your rads mounted, etc The only things I've read, written by experienced long time water coolers (qualified and they never make a typing boo boo, credibiliy, it's all about credibility
) You should always install the pump right after the rez (to keep it from ever running dry), to plumb using the least tubing possible (no extra sharp bends, no kinking or possibility of kinking and IMO overlooked frequently, have cool air at the intake of the radiator. (if possible, ambient temp can have a big effect on loop temps to a certain degree) I think because the loop is closed the order of the components is not so important, expect the pump/rez of course
. I have 2x Q6600 G0's in external water boxes that I built and run 24/7 and I've never had too many problems a little research didn't cure
As far as your pump (MCP655) just make sure the top connection goes to the pressure side of your loop and the middle or side connection is the return of your loop (in my configuration the top goes to my rad and the middle/side comes from my rez) In my case the rad pressure line goes to the CPU WB first (XSPC Delta V3, it's mounted horizontally) and second tube goes to a MCW60-R VGA WB (I don't know if one inlet is intake and the other return, I don't think it matters
) then from the MCW60-R the coolant is returned to the resevoir and it's cooled in the rad to start the trip all over again.
On the DDC type pump Laing even labled the intake and pressure barbs on their stock top
Good luck and I hope you come up with something, if you do please post it
If I'm not clear I appologize, ATM I'm putting WinXP Home on a HP nc6000 laptop (I replaced the HD). I think I know why I prefer Dell lappys now, I never had the first prob with my D610 (I know, only Pentium M's, but I only use them for surfing the Net and posting posts like this. I have them to keep from interupting my 2x water cooled 24/7 DCing Q6600 G0's
(I replaced a 60 GB HD to a 120GB hard drive in my D610)