140mm radiator in the top of HAF 912?



I really want to install a 140mm WC like the Kraken X40 or the nepton 140XL; this last one can be fitted to a 120mm so it woud fit in the roof ( 1X 200mm or 2X 120 is possible like you said) ,my fear is if the second fan (which again can be 120 or 140mm) will hit something on the motherboard

I could just buy a H80i...but I heard some bad thing about the H80i and H100i....
 
I'm not too fond of Corsair Water coolers and I too have read about a few people struggling with them.

I do like my Kraken X40. :)

I don't think the 2nd fan will add that much, but if you *must* have a push/pull configuration, you should measure the clearances. I think most top coolers are not configured in push/pull. One fan should be sufficient.