Yeah, .31 is close enough, the seals were a rubber
looking material with enough elasticity to slip fit
over the stems, nominal 5/16".
I was quoting from my official Triumph Spifire
Workshop manual, new inlet stems are .310-.311, while
ex are .308-.309, I had looked it up before posting to
be sure.
--- MikeC <mikech@sprynet.com> wrote:
> I've been told all the stem diameters are .31 inch.
> MikeC
>
>
>
> >It *seems* like I used a set like on a Spitfire
> head
> >many years ago. Might have been leftovers from a
> >260/289 Ford V-8 I rebuilt. Stem diameter on Mk
> I/II
> >is .308 ex, .310 in, roughly 5/16", is 1300/1500
> the
> >same?
>
>
>
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