> running my TR2 engine again, for about 15mins this time, and
> having a
> good look round. I noticed bubbles of water rising up from
> between the
> nut and the thread of the centre head stud on the manifold side. A
> cause for concern or no?
Possibly, but I wouldn't tear it back down just yet. It may be you just
managed to leave a few drops in the stud hole, or the gasket may eventually
decide to seal.
IMO, Retorque the head nuts & keep an eye on it. If it continues to weep,
and you don't have other reasons to take it apart again, a little "stop
leak" might help. Don't know what's available there, but I like the one
sold here that looks like powdered aluminum (and called "Aluma-Seal").
BTW, I definitely recommend using at least 30% antifreeze, even if there is
no chance of the engine freezing. Quality anti-freeze also contains
essential anti-corrosion additives, plus a mild stop leak (that might solve
the weeping).
Randall
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