Just to play devil's advocate, don't forget our LBC's after 1968 have had
lower compression than the European equivalents, so octane won't affect
their running, unless they have dieseling problems. That your cylinder
head is fine is a different matter. I rather doubt if Triumph or any
company made two types of head, one for North America and one for the rest
of the world. Apart from the possible effects of high compression on
valve seats, there shouldn't be any greater tendency in European cylinder
toward valve seat recession, so anyone complaining about the potential
damage to their head is totally nuts.
Jim Ruwaldt
'72 TR6 CC79338U
Bloomington, IN
On Mon, 15 Dec 1997, Ron Roach wrote:
> I've run all my LBC's on unleaded for years here in Canada without any
> problems and no pinging either. actually I always run 'em on the cheap
> lower octane stuff and they always run fine. I compared it with using
> higher octane(94), but found no difference in performance. Isn't the
> exhaust from leaded fuel especially toxic? Isn't this why they got rid of
> lead in paint...because it is toxic for children? I really don't see the
> arguement for leaded fuel as there are lots of English cars still running
> without it. Has anyone used a generic
> Cat.con on any of there vehicles without using an EG valve? I was curious
> if my Spitfire would burn one of those types or converters up fast or if it
> would reduce the emissions adequately? I'm having some trouble getting
> this thing to pass the emissions tests here as my car doesn't have any of
> smog gear on it.
>
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