Finally I got my mixing elbow cleaned up and I believe I can make do with it till the new parts arrive (3 weeks).
Looking from outlet side I see separation of exhaust and cooling water passage but at inlet of the mixing elbow, I see a small hole or no more than 10mm diameter. Is this correct? The tried clearing and chiselling with screw drivers but could make the hole any bigger? If it is corrosion, the should come off easily hence I suspect the orifice is original. Can anyone confirm or advise?
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium