Corsair Vengeance C70 Mods
Ok, I forgot the part about the piece for the top vents.Once you get that piece cut, you can lay it on top of the case and mark the holes on the back side of the piece bygoing through the inside of the case.I had the rubber bushings Corsair provides with the case in the 8 holes meant for the larger fans. The rubber bushingswill help keep the aluminum plate from shifting while you make your markings. A heavy book on top will really help.I used a red felt tip pen and it showed up well on the white back side of the aluminum.Then when you get all of the holes marked, it's a good idea to lightly center punch the marks so the drill bit won't walkas you are drilling.I don't remember the drill bit size for the black fan screws that come with the case. Do some tests on a block of woodto select a drill bit just smaller than the screws. If you end up drilling the holes too large, plan B would be to use someblack screws and washers/nuts on the inside. It would look the same but would require you to go buy more parts.I think I actually just grabbed a spare fan to determine which drill bit fit those holes, that was easy.As a final step, I used a counter sink bit to smooth and deburr the holes.
This is also a good thing to do on the largeraluminum sheet above.When you install the cover for the vents, you may want to use a clean rag to cover the mobo so you don't get any smallaluminum shavings dropping from the screw holes on the mobo. If the holes are the right size and deburred, you won't getany shavings.I ended up removing the rubber bushings in the top vent, they just deform and look goofy with the screws in place.That's it for that one. Let me know if any questions.
One note regarding air flow on the case after doing this.You are closing off a lot of vents, both in the side window and the top vents too. If you have top mounted fans or a radiator,obviously you can't cover up the top vents.One surprise is that while I thought the case would get quieter. It actually got louder. The stock Corsair fans had to workharder and I could hear them more than before. Kind of like when you put your hand over a vacuum cleaner hose and themotor starts racing.My solution on that was to use some Noctua noise reduction wires to drop the speed of the fans. Yet another reductionin overall cooling but it's working well.Even with all of that cooling loss, I have a 4690K running fine at 4.5GHz with a Reeven Justice cooler.
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Corsair Vengeance C70 Case
The case still hasthe front and rear mounted fans and the vents on the bottom of the tower. Cooling is still fine for my needs. And it's quiet.