--===============3499140702626277967==
boundary=Apple-Mail-DCCE55C9-D130-4FA7-9085-523965F8B8E7
Content-Transfer-Encoding: 7bit
--Apple-Mail-DCCE55C9-D130-4FA7-9085-523965F8B8E7
charset=utf-8
Content-Transfer-Encoding: quoted-printable
Don,
It came about as I recall sometime in the late 60s when I was working for th=
e company in London. What started it (IIRC) was when there was an engineerin=
g change bulletin brought about by Sweden requiring cadmium plated fasteners=
instead of zinc, or t=E2=80=99other way about on all cars for Sweden. That a=
llegedly precipitated the Belgian assembly plant seeking to use metric faste=
ners in certain areas, though not all, in their build sequencing. Coventry s=
till built quite a lot of components that went into the kits for Belgium and=
for a while, most if not all cars going to Sweden were built in Belgium. La=
ter on, Sweden destined cars reverted to UK build and I think it all died a v=
ery quick death and we reverted to imperial standard, apart from the cadmium=
and zinc issue which remained in place. However, it wasn=E2=80=99t plain sa=
iling all the way in the Coventry and London service departments because the=
fitters started moaning about not having appropriate sized sockets and span=
ner=E2=80=99s for oddball UK home market cars that found their way in with s=
trange metric hardware. All in all, one humongous cock-up all round and I do=
n=E2=80=99t think anyone was sure who had suggested it all in the first plac=
e. Probably some acne ridden long-haired lout just out of university with a D=
ivinity degree and who wanted to make his mark and change the world. Quite l=
ikely the same person was later moved into Purchasing and decided to change t=
he metallurgical spec for Stag cylinder heads - and that=E2=80=99s somewhere=
no-one needs to go, EVER!
Jonmac
> On 30 Apr 2025, at 23:34, Don Hiscock <don.hiscock@gmail.com> wrote:
>=20
> I'm not aware of any Whitworth threads installed by S-T (at least on a sid=
escreen car). There may be some Whitworth and BA threads on bought-in compo=
nents, like SU carbs, Smiths, and possibly some Lucas. But I'll be shocked s=
h*tless to learn legit Withworth threads were used in a S-T engine.
>=20
> Jonmac, I'd never heard that metric and inch fasteners were used on the li=
ne at the same time depending on the end market for the vehicle. That's a f=
ascinating bit of trivia, and one of the reasons we love having you here! W=
hat time period are you talking about for that? Maybe 1970s?
>=20
>> On Wed, Apr 30, 2025 at 4:27=E2=80=AFPM John Macartney <johnbmacartney@gm=
x.com> wrote:
>> I have my doubts about the offending item having Whitworth ancestry. Whil=
e I=E2=80=99ve long been a Whitworth advocate and enthusiast (for purely pat=
riotic reasons) I think it might be worth going down a metric route. There w=
as a time when the factory briefly reverted to metric hardware that was mark=
et specific for European build. Needless to say, certain bits of hardware we=
nt where they shouldn=E2=80=99t (or inadvertently wound up there). Might thi=
s be a possible avenue to explore? Evaluate metric fine and coarse pitch thr=
eads.
>>=20
>> Jonmac
>> ** triumphs@autox.team.net **
>>=20
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/pipermail/triumphs http://www.team.net/arch=
ive
>>=20
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/don.hi=
scock@gmail.com
--Apple-Mail-DCCE55C9-D130-4FA7-9085-523965F8B8E7
charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">Don=
,</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">It came about as I recall=
sometime in the late 60s when I was working for the company in London. What=
started it (IIRC) was when there was an engineering change bulletin brought=
about by Sweden requiring cadmium plated fasteners instead of zinc, or t=E2=
=80=99other way about on all cars for Sweden. That allegedly precipitated th=
e Belgian assembly plant seeking to use metric fasteners in certain areas, t=
hough not all, in their build sequencing. Coventry still built quite a lot o=
f components that went into the kits for Belgium and for a while, most if no=
t all cars going to Sweden were built in Belgium. Later on, Sweden destined c=
ars reverted to UK build and I think it all died a very quick death and we r=
everted to imperial standard, apart from the cadmium and zinc issue which re=
mained in place. However, it wasn=E2=80=99t plain sailing all the way in the=
Coventry and London service departments because the fitters started moaning=
about not having appropriate sized sockets and spanner=E2=80=99s for oddbal=
l UK home market cars that found their way in with strange metric hardware. A=
ll in all, one humongous cock-up all round and I don=E2=80=99t think anyone w=
as sure who had suggested it all in the first place. Probably some acne ridd=
en long-haired lout just out of university with a Divinity degree and who wa=
nted to make his mark and change the world. Quite likely the same person was=
later moved into Purchasing and decided to change the metallurgical spec fo=
r Stag cylinder heads - and that=E2=80=99s somewhere no-one needs to go, EVE=
R!</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Jonmac</div><div dir=3D"=
ltr"><br>On 30 Apr 2025, at 23:34, Don Hiscock <<a href=3D"mailto:don.his=
cock@gmail.com">don.hiscock@gmail.com</a>> wrote:<br><br></div><blockquot=
e type=3D"cite"><div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_defaul=
t" style=3D"font-size:small">I'm not aware of any Whitworth threads installe=
d by S-T (at least on a sidescreen car). There may be some Whitworth a=
nd BA threads on bought-in components, like SU carbs, Smiths, and possibly s=
ome Lucas. But I'll be shocked sh*tless to learn legit Withworth threa=
ds were used in a S-T engine.</div><div class=3D"gmail_default" style=3D=
"font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-size:=
small">Jonmac, I'd never heard that metric and inch fasteners were used=
on the line at the same time depending on the end market for the vehicle.&n=
bsp; That's a fascinating bit of trivia, and one of the reasons we love havi=
ng you here! What time period are you talking about for that? Ma=
ybe 1970s?</div></div><br><div class=3D"gmail_quote gmail_quote_container"><=
div dir=3D"ltr" class=3D"gmail_attr">On Wed, Apr 30, 2025 at 4:27=E2=80=AFPM=
John Macartney <<a href=3D"mailto:johnbmacartney@gmx.com";>johnbmacartney=
@gmx.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex">I have my doubts about the offending item having Whitworth ancestry. W=
hile I=E2=80=99ve long been a Whitworth advocate and enthusiast (for purely p=
atriotic reasons) I think it might be worth going down a metric route. There=
was a time when the factory briefly reverted to metric hardware that was ma=
rket specific for European build. Needless to say, certain bits of hardware w=
ent where they shouldn=E2=80=99t (or inadvertently wound up there). Might th=
is be a possible avenue to explore? Evaluate metric fine and coarse pitch th=
reads.<br>
<br>
Jonmac<br>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@aut=
ox.team.net</a> **<br>
<br>
t=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/triumphs</a> <a hre=
f=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">http:=
//www.team.net/archive</a><br>
<br>
s/don.hiscock@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.t=
eam.net/mailman/options/triumphs/don.hiscock@gmail.com</a><br>
</blockquote></div>
</div></blockquote></body></html>=
--Apple-Mail-DCCE55C9-D130-4FA7-9085-523965F8B8E7--
--===============3499140702626277967==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
--===============3499140702626277967==--
|