Does any of them go in to the water pocket in the block? And if yes, which ones? My 303 is leaking coolant on the RH side close to the lower middle bolt, just above the exhaust manifold. Cylinder cement did help, but now that I'm about to change the coolant, I could put some sealant to the bolts.

But if they don't go to the water pocket, I quess it's the head gasket leaking then.

Pertti K...The bolts should not go into the water jackets.