--===============4094286455441277127==
--0000000000005da7300625284553
Content-Transfer-Encoding: quoted-printable
I never heard about the adoption of hardened valve seats early on for
Triumph or other imports. Word on the street in the 80s was we needed to
get hardened valve seats, find leaded fuel, or run an additive in our fuel
for our sixties and early seventies cast iron head British cars.
I remember using some kind of lead additive/octane booster in my daily
drivers at that time, don't know if it made any difference.
Since then I have had many hobby cars and many thousands of miles of use
with no lead or additives and no problems.
Greg Lemon
68 TR250
On Wed, Oct 23, 2024, 11:36=E2=80=AFAM Don Hiscock <don.hiscock@gmail.com> =
wrote:
> I=E2=80=99ve never heard that bit about satellite seats, John, but it=E2=
=80=99s certainly
> possible.
>
> My recollection is that unleaded fuel first started becoming available in
> America circa 1973-75 and it became dominant in the 1980s. It=E2=80=99s h=
ard to
> imagine engineering changes by the British motor industry being made in t=
he
> 1960s for unleaded gasoline in the USA. Later on, perhaps.
>
> On Wednesday, October 23, 2024, John Macartney <johnbmacartney@gmx.com>
> wrote:
>
>> Does anyone out there have documentary evidence (in the form of Service
>> Bulletins issued by the factory or Leona NJ) that makes specific mention=
of
>> the introduction of stellite valve seats in place of earlier and softer
>> alternatives? I do recall BMC making something of a hoo-haa about stelli=
te
>> seats being used in the MGB and Healey 3000 back in the sixties. Same
>> applied to Rootes Group and Jaguar.
>> There is hearsay in the UK that hardened seats went into heads for the U=
S
>> market at about the same time because of the introduction of unleaded fu=
el.
>> That hearsay also suggests hardened seats were territory specific but fr=
om
>> an ease of production standpoint, having two different types of seat dur=
ing
>> machining and manufacture just doesn=E2=80=99t make sense. I can think o=
f other
>> examples where Standard-Triumph adopted a =E2=80=9Cone type fits all=E2=
=80=9D applied and
>> that goes for other British makes.
>> It=E2=80=99s clear that valve seat recession fears in Europe has been a =
kneejerk
>> reaction to a problem that never really existed which suggests stellite
>> valve seats were fitted for all markets. An engineering or service bulle=
tin
>> back in the day would have confirmed this but I never remember seeing on=
e.
>> Thoughts anyone?
>>
>> Jonmac
>> ** triumphs@autox.team.net **
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/pipermail/triumphs
>> http://www.team.net/archive
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/triumphs/don.hiscock@gmail.com
>>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs
> http://www.team.net/archive
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/grglmn@gmail.com
>
--0000000000005da7300625284553
Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">I never heard about the adoption of hardened valve seats =
early on for Triumph or other imports.=C2=A0 Word on the street in the 80s =
was we needed to get hardened valve seats, find leaded fuel, or run an addi=
tive in our fuel for our sixties and early seventies cast iron head=C2=A0 B=
ritish cars.=C2=A0=C2=A0<div dir=3D"auto"><br></div><div dir=3D"auto">I rem=
ember using some kind of lead additive/octane booster in my daily drivers a=
t that time, don't know if it made any difference.=C2=A0=C2=A0</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto">Since then I have had many hobby=
cars and many thousands of miles of use with no lead or additives and no p=
roblems.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Greg Lemon</div=
><div dir=3D"auto">68 TR250</div></div><br><div class=3D"gmail_quote"><div =
dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 23, 2024, 11:36=E2=80=AFAM Don=
Hiscock <<a href=3D"mailto:don.hiscock@gmail.com";>don.hiscock@gmail.com=
</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I=E2=80=99ve never =
heard that bit about satellite seats, John, but it=E2=80=99s certainly poss=
ible.=C2=A0<div><br></div><div>My recollection is that unleaded fuel first =
started becoming available in America circa 1973-75 and it became dominant =
in the 1980s. It=E2=80=99s hard to imagine engineering changes by the Briti=
sh motor industry being made in the 1960s for unleaded gasoline in the USA.=
Later on, perhaps.=C2=A0<br><br>On Wednesday, October 23, 2024, John Macar=
tney <<a href=3D"mailto:johnbmacartney@gmx.com"; target=3D"_blank" rel=3D=
"noreferrer">johnbmacartney@gmx.com</a>> wrote:<br><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex">Does anyone out there have documentary evidence (in the form of S=
ervice Bulletins issued by the factory or Leona NJ) that makes specific men=
tion of the introduction of stellite valve seats in place of earlier and so=
fter alternatives? I do recall BMC making something of a hoo-haa about stel=
lite seats being used in the MGB and Healey 3000 back in the sixties. Same =
applied to Rootes Group and Jaguar.<br>
There is hearsay in the UK that hardened seats went into heads for the US m=
arket at about the same time because of the introduction of unleaded fuel. =
That hearsay also suggests hardened seats were territory specific but from =
an ease of production standpoint, having two different types of seat during=
machining and manufacture just doesn=E2=80=99t make sense. I can think of =
other examples where Standard-Triumph adopted a =E2=80=9Cone type fits all=
=E2=80=9D applied and that goes for other British makes.<br>
It=E2=80=99s clear that valve seat recession fears in Europe has been a kne=
ejerk reaction to a problem that never really existed which suggests stelli=
te valve seats were fitted for all markets. An engineering or service bulle=
tin back in the day would have confirmed this but I never remember seeing o=
ne. Thoughts anyone?<br>
<br>
Jonmac<br>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank" rel=3D"nore=
ferrer">triumphs@autox.team.net</a> **<br>
<br>
=3D"noreferrer">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; target=3D"_blan=
k" rel=3D"noreferrer">http://www.team.net/pipermail/triumphs</a>=C2=A0 <a h=
ref=3D"http://www.team.net/archive"; target=3D"_blank" rel=3D"noreferrer">ht=
tp://www.team.net/archive</a><br>
<br>
hs/don.hiscock@gmail.com" target=3D"_blank" rel=3D"noreferrer">http://autox=
.team.net/mailman/options/triumphs/don.hiscock@gmail.com</a><br>
</blockquote></div>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank" rel=3D"nore=
ferrer">triumphs@autox.team.net</a> **<br>
<br>
errer" target=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er noreferrer" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=
=C2=A0 <a href=3D"http://www.team.net/archive"; rel=3D"noreferrer noreferrer=
" target=3D"_blank">http://www.team.net/archive</a><br>
<br>
hs/grglmn@gmail.com" rel=3D"noreferrer noreferrer" target=3D"_blank">http:/=
/autox.team.net/mailman/options/triumphs/grglmn@gmail.com</a><br>
</blockquote></div>
--0000000000005da7300625284553--
--===============4094286455441277127==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
--===============4094286455441277127==--
|