Craig,
I have been burning unleaded fuel in my Mk1 (with 1500 engine) for the
past 3 years and have had no problems. I think this unleaded thing,
like the Y2K thing has been greatly exaggerated!
Regards,
Joe
craig skitt wrote:
>
> On the topic of unleaded fuel, is anyone relatively confident that unleaded
> petrol can be used with no detriment to the spit, as certain car magazines
> state that it cannot be used.
>
> Craig Skitt
> Inca Yellow 1976 1500 O/D
> W.Mids
> England.
>
> >From: Craig Smith <CraigS@iewc.com>
> >Reply-To: Craig Smith <CraigS@iewc.com>
> >To: "'Barry Schwartz'" <bschwart@pacbell.net>, triumphs@autox.team.net
> >CC: spitfires@autox.team.net
> >Subject: RE: Of interest to concerns of unleaded fuel usage
> >Date: Tue, 16 Nov 1999 08:22:47 -0600
> >
> >My understanding also on the Stellite valves are that they index themselves
> >with each opening. Index meaning they rotate so the seat will not see the
> >same part of the valve on each closing. The above also tainted with age and
> >old Miller Lite use.
> >
> >
> >-----Original Message-----
> >From: Barry Schwartz [mailto:bschwart@pacbell.net]
> >Sent: Tuesday, November 16, 1999 8:10 AM
> >To: triumphs@autox.team.net
> >Cc: spitfires@autox.team.net
> >Subject: Of interest to concerns of unleaded fuel usage
> >
> >
> >
> >I was reading a PDF copy of the British Leyland Motor Inc., service
> >division, dealer training booklet, concerning 1970 emissions data and on
> >page 7, it states:
> >
> >To conform with the emission control standards, imposed by the federal
> >authorities, the following engine modifications are incorporated.
> >
> >1. Exhaust Valves
> >Stellite faced exhaust valves are fitted to maintain effective valve
> >seating between servicing intervals.
> > < snip >
> >
> >What this means for those of you with 1970 and later vehicles is that you
> >needn't worry about using unleaded fuel in your vehicle. From what I
> >remember (which is becoming cloudier with age :-}) this is one of those
> >changes made to preclude valve wear when unleaded was introduced. Stellite
> >(trademark) for those of you who might be interested, is a cobalt-base
> >alloy with chromium and other metals; very hard; used to make cutting tools
> >and for surfaces subject to heavy wear
> >
> >I seriously doubt that heads destined only for the USA were the only ones
> >fitted with these valves, as I imagine the logistics of determining which
> >heads/engines are destined for what country would be more expensive than
> >fitting them to all cars. And I'm sure hardened seats would also be
> >fitted, as what would be the point of fitting harder valves just to let the
> >valves beat the seat to pieces, although I could be mistaken here
> >
> >Just thought that might clear up a few things (or maybe muddy the waters
> >even more ;-0 ??)
> >
> >
> >Barry Schwartz (San Diego) bschwart@pacbell.net
> >
> >72 PI, V6 Spitfire (daily driver)
> >70 GT6+ (when I don't drive the Spit)
> >70 Spitfire (long term project)
--
"If you can't excel with talent, triumph with effort."
-- Dave Weinbaum in National Enquirer
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