Thanks for all the info on modding the pump. I only have the one pump right now, so I don't want to mod it - yet.
I think right now it is struggling with all those blocks.. low flow, but I cannot be sure since I don't have any meters to measure it.
Do you think I could run the pelts in the same loop as GPUs and NB? With the PA140.3 and MCR220, and 8 x 3000rpm (120x120x38mm) with 120mm->140mm adapters my current setup never pushes out even warm air. Push/Pull on the PA140.3 and pull on the MCR220.
I am wondering if I had a more powerful pump and a third radiator (PA140.3 or PA120.3), and putting the CPU/Pelts last in the loop before radiators if I would be foolish to try a single loop.
I have been looking at either a iwaki, or blue line pump, then modding the MCP655 as it would be out of the loop.
Basically it seems pointless to buy an expensive pump if I am going to run 2 loops anyways.
I have been looking at the Blueline 70 HD, it is on sale a bit at ~$230 http://www.aquadirect.com/store/prod...roductid=18058
Again, It might be better to just get a second MCP655 and run two loops.. I could also be a guinea pig and see what happens lol.
option 1: split loop in 2
option 2: one loop with better pump and 3 rads
option 3: ??