I've heard the same thing, specifically about the TR2-6 motors. I've
also been told that lubrication is even more important for the
aftermarket silicon-bronze valve guides than for the stock cast-iron
ones, as the bronze is more apt to gall to the valve stem with
insufficient lubrication. Seals, especially the 'teflon' type, are only
for race motors, where oil control is more important than long life.
However, I was able to find teflon type seals that fit my early TR3 'Le
Mans' head with no modifications, at the local speed shop. I just took
them the stem diameter and the guide diameter, they gave me a handful of
seals. ISTR they were $1/each, but that's been a few years ago. Note
that I still don't recommend seals, this was an unusual case.
Randall
Mark Hooper wrote:
>
> I have the work I don't have time for done at a place specializing in LBCs
> in Montreal. The mechanics there told me that whenever they have to do an
> LBC engine head job, they specifically don't install valve seals so that the
> guides get some lubrication. They claimed that the typical LBC head oiling
> is so poor that their trick is required. Sounds odd I know, but they claim
> it works for them. Perhaps they were only talking about certain motors, but
> that's their practice.
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