Interesting to note considering my RHD '67 Spitfire is a "home market" car.
I'll keep using the additive. I don't think there is anything to harm in
taking this approach.
Best wishes,
Jeff in San Diego
'67 RHD Spitfire Mk3 aka "Mrs. Jones"
Jeff's Classic '67 Spitfire Mk3 site & Vintage Spitfire Webring
http://www.ohms.com/spitfire/spitfire.shtml
home of the NEW Totally Triumph Auction
"By Triumph enthusiasts, for Triumph enthusiasts"
http://www.ohms.com/cgi-bin/TRauction.cgi
and... The Triumph Autos/Parts Wanted Listings
http://www.ohms.com/cgi-bin/TRwanted.cgi
...plus a few other surprises!
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
----- Original Message -----
From: Graham Stretch <technical@iwnet.screaming.net>
To: John Macartney <jonmac@ndirect.co.uk>
Cc: List Triumph <triumphs@autox.team.net>
Sent: Saturday, May 13, 2000 9:30 AM
Subject: Re: Unleaded gas
>
> Hi All
> The export models of some of our cars headed for some markets may have had
> hardened valve seats fitted. The home market cars did not have valve seat
> inserts fitted, they use the cast iron of the head to machine into valve
> seats. the only exceptions to this are the cars fitted with the slant four
> engines as these had alloy heads with valve seat inserts.
>
> Graham.
>
>
> > The panic we've seen about only 'soft' valved cars being built up to
1988
> is something of
> > a myth. Certain cars are affected to this date but many are not. There
is
> ample evidence
> > that the main supplier of valve seats in the UK (a company named Brico)
> was supplying
> > 'hard' seats over thirty years ago to manufacturers shipping cars to
North
> America. In
> > manufacturing terms, there was little, if anything, to be gained by
> specifying different
> > types of seat dependent on market destination. This is why a substantial
> number of
> > TR and Spitfire owners on both sides of the Atlantic have reported no
> problems switching
> > from leaded to
> > unleaded. The same goes for Herald Vitesse Dolly and the 1300/1500
FWD's.
> All these cars
> > were fitted with hardened seats. I've heard much the same reports from
> Rover P6 users and
> > a good many MG and Sunbeam owners too. I guess the only people likely to
> have VSR problems
> > are those owners who have had a major head overhaul but found they'd
been
> tucked
> > up with 'soft' valve seats on the grounds of cost from an unscrupulous
> workshop or truly
> > do have a soft valved car.
>
>
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