In oil immersion would if be better to throw the fans away and use an oil pump to circulate the oil round a small cooling radiator then introduce back to the immersion tank? A decent oil pump would be required but with some small bore tube I would probably make some jets to introduce a high flow over the cards. Just food for thought.
That is exactly what I am doing. I just need to find a way to get them to run without fans connected.
Well, you could switch to the F1 firmware. This will allow you to run 1 fan instead of 2 which might be better than nothing.
I know the folks running sp30's in mineral oil modified or replaced the fans that they were using so they could use them in the oil. I think a very slow moving fan would actually help circulate the oil...allowing for additional overclocking? Let us know...these s7 blades (in theory) could take 800-900 watts ea. if the 3x pci-e plugs meant anything.