Quote Originally Posted by mooshie View Post
so would I be right in saying that the gasket has probably had a small hole for a while, and it is only now that it is seeing positive pressure that is forcing the coolant out?
Yep, that's what I thought too. When I changed my HG, it was evident where the coolant was seeping. It's prob a weakness that posed no problems n/a, only manifesting once it was pressurised.

I personally thought that it was because of the 0.64a/r rear housing on my turbo being too small, but I dont know, this is all speculation on my part.