Overflow Expansion Tank Volume
 

Hello,

So my overflow expansion tank is a bit dodgy. I suspect is leaking, and changeing it is no option as I have removed inner arches for time being, which by the way caused chips to hit the overflow tank. (no time yet for inner arches as I`m 22B kit).

So I will get build myself a nice alloy overflow tank. Question is how much volume should it be? My current option is 470ml volume with given material. Not sure if enough volume or not.