Weird cyl-head water leak

[wilf leek]

TomS - alternator bracket came from my engoine builder, will ask him for the source.

Plan now is:

stage 1: retorque all head bolts

if no cure:

stage 2: remove the 2 short bolts from around the affected area and refit with more sealant. Not doing this at stage one since I feel that completely removing any single bolt whilst the others are tight is intrinsically "bad" from a strict engineering viewpoint.

if no cure:

stage 3: pull head, check for straightness, replace cyl head gasket and use some luvverly silicon sealant.

Any particular grade of silicon I should be using? I have also heard that header gaskets seal better with that stuff.