I think there must be a lot of factors. I know about 3 years ago I had a
bad head gasket issue on my MGA (with a 3 main MGB motor), and took the
head in to be checked/rebuilt as needed. It was a 1500 head, and in
pretty bad shape actually - the valves had hammered the head surface
pretty hard - and I got all new, and hardened seats. I suppose that may
or may not be due to the lack of lead in the fuel, but I can tell you that
the surface was shot.
Phil Bates
> Max Heim SEZ -
> > Why do you think you need a lead additive?
> >
> > Real world experience seems to indicate that under normal street
conditions
> > these engines get by perfectly OK on unleaded fuel.
>
> Not only unleaded, but the mechanic who rebuilt the 5-main high-
compression
> MGB engine for my MGA told me that I can use regular-grade unleaded in
> all but the warmest weather! This surprised me because my '68 MGB had
> basically the same engine, but the owner's manual said to never use
> less than 98 octane except in an emergency. I've always been sceptical
> of unleaded gas in pre-1975 engines - after all, if the government bans
> something it *must* be good! :-) But I'll trust an expert. This
> guy's rebuilt a lot of MG engines.
>
>
> --
> David Breneman |
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