Originally Posted by thrgk
so M3.5 screws are the best, they wont hit the raadiator when using 25mm fan? Also, im going to try and pinch it off on the radiator where it is leaking from. But from now on use M3.5 screws?
That is not accurate. M3.5 is a metric size of bolts while 6-32 is another type of measurement for bolt size. Both bolt measurements can puncture your radiator potentially is the length of the bolt. If the bolt is too long and you screw it is all the way, it will puncture your radiator if it hits and drives through a channel.
Here is what I have found useful in my years of water cooling:
- A 25mm fan is about an inch thick so if you are not using a shroud, you should typically look for a 1.25 inch bolt and potentially use washers
- If you are not sure how much clearance is available based on your size screw, slide a plastic separator between the radiator fins and the fan hole of it's mini shroud and that will prevent it from hitting the actual radiator
- Buy multiple length bolts to figure out which length is the right one; washers help too.
Hope this helps in the future. As far as your current issue, there are lots of ways to fix it:
- If it is just a simple hole, try using some sort of sealant that can either bond to metal or stick to it persistently. If you plan on using JB Weld, my suggestion is to first rub off the paint on the affected area and expose the plain copper underneath so the JB Weld bonds to that and not the paint coating. Plumbing department at Home Depot should offer many sealants that are also water resistant.
- If it is a deeper hole, I would probably use plumbing chalk sealant for copper pipes as it is more malleable.
- If it is completely ripped with multiple holes from where additional channels connect, you might be hosed.