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> The 1500 engine is positively athsmatic and has always had breathing
issues in standard spec. No doubt there will be howls of protest in favour
of the 1500
Well, I'm about to find out. My short block has been cleaned up and
balanced, a lightened flywheel and slightly hotter cam has been purchased,
and my head is at a 1500 specialist having its breathing attended to. Add
a pair of HS4s and the UK exhaust manifold, and it ought to be better than
the original US spec, anyway. I will certainly have spent enough cubic
dollars to go at least a little faster...
Jeff Scarbrough
Corrosion Acres, Ga.
On Fri, Oct 23, 2020 at 1:51 PM John Macartney <John.Macartney@ukpips.org.u=
k>
wrote:
> Air pollution regs kicked in for 1968 build. Albeit very limited, the SU
> carb proved a bit difficult to lean out and that=E2=80=99s why Spitfires =
from
> either 1969 or 1970 model year used a single Stromberg. My personal opini=
on
> is the Mk3 Spitfire with the 1296 8 port head is the Best Buy, hotly
> followed by the 1296 Mk4. The 1500 engine is positively athsmatic and has
> always had breathing issues in standard spec. No doubt there will be howl=
s
> of protest in favour of the 1500 but the many I=E2=80=99ve driven over ye=
ars -
> rebuilt/cared for/completely knackered - were all the same, I.e. seriousl=
y
> disappointing and that same engine in the Midget made that great little c=
ar
> something that is best forgotten.
>
> Jonmac
>
> Bessie Braddock: =E2=80=9CWinston! You=E2=80=99re drunk=E2=80=9D.
> Churchill: =E2=80=9Cand you, Madam, are ugly. But tomorrow, I shall be so=
ber but
> you will still be ugly=E2=80=9D.
>
> On 23 Oct 2020, at 17:28, Sujit Roy <triumphstag@gmail.com> wrote:
>
> Thanks for the answers. Here are a few follow up questions.
> If the Smog parts were completely removed from the car and it needs it,
> what is the worst case cost wise to buy this stuff to get it though a
> Smog? What workshop equipment would I need to buy and cost to make sure I
> can get it close to passing a smog without having a repair shop tweek it =
to
> pass a smog check? Also, are '74 year and earlier cars exempt from a smog
> but '75 on are not?
>
> Regards, Sujit
>
> --
> Sujit Roy
> Cupertino, California
>
> https://triumphstagblog.wordpress.com/
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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<div dir=3D"ltr">>=C2=A0
The 1500 engine is positively athsmatic and has always had breathing issues=
in standard spec. No doubt there will be howls of protest in favour of the=
1500<div><br></div><div>Well, I'm about to find out.=C2=A0 My short bl=
ock has been cleaned up and balanced, a lightened flywheel and slightly hot=
ter cam has been purchased, and my head is at a 1500 specialist having its =
breathing attended to.=C2=A0 Add a pair of HS4s and the UK exhaust manifold=
, and it ought to be better than the original US spec, anyway.=C2=A0 I will=
certainly have spent enough cubic dollars to go at least a little faster..=
.</div><div><br></div><div>Jeff Scarbrough</div><div>Corrosion Acres, Ga.</=
div><div><br></div><div><br></div></div><br><div class=3D"gmail_quote"><div=
dir=3D"ltr" class=3D"gmail_attr">On Fri, Oct 23, 2020 at 1:51 PM John Maca=
rtney <<a href=3D"mailto:John.Macartney@ukpips.org.uk";>John.Macartney@uk=
pips.org.uk</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"><div dir=3D"auto">Air pollution regs kicked in for 1968 build. A=
lbeit very limited, the SU carb proved a bit difficult to lean out and that=
=E2=80=99s why Spitfires from either 1969 or 1970 model year used a single =
Stromberg. My personal opinion is the Mk3 Spitfire with the 1296 8 port hea=
d is the Best Buy, hotly followed by the 1296 Mk4. The 1500 engine is posit=
ively athsmatic and has always had breathing issues in standard spec. No do=
ubt there will be howls of protest in favour of the 1500 but the many I=E2=
=80=99ve driven over years - rebuilt/cared for/completely knackered - were =
all the same, I.e. seriously disappointing and that same engine in the Midg=
et made that great little car something that is best forgotten.<div><div><b=
r></div><div>Jonmac<br><br><div id=3D"gmail-m_6520465779848206012AppleMailS=
ignature" dir=3D"ltr">Bessie Braddock: =E2=80=9CWinston! You=E2=80=99re dru=
nk=E2=80=9D.<div>Churchill: =E2=80=9Cand you, Madam, are ugly. But tomorrow=
, I shall be sober but you will still be ugly=E2=80=9D.</div></div><div dir=
=3D"ltr"><br>On 23 Oct 2020, at 17:28, Sujit Roy <<a href=3D"mailto:triu=
mphstag@gmail.com" target=3D"_blank">triumphstag@gmail.com</a>> wrote:<b=
r><br></div><blockquote type=3D"cite"><div dir=3D"ltr"><div dir=3D"ltr"><di=
v>Thanks for the answers. Here are a=C2=A0few follow up questions.</div><di=
v>If the Smog parts were completely removed from the=C2=A0car and it needs =
it, what is the=C2=A0 worst case cost wise to buy this stuff to get it thou=
gh a Smog? What workshop equipment would=C2=A0I need to buy and cost to mak=
e sure I can get it close to passing=C2=A0a smog without having=C2=A0a repa=
ir shop tweek it to pass a smog check? Also, are '74 year and earlier c=
ars exempt from a smog=C2=A0 but=C2=A0 '75 on are not?</div><div><br></=
div><div>Regards, Sujit</div><div><br></div>-- <br><div dir=3D"ltr"><div di=
r=3D"ltr"><div>Sujit Roy<br>Cupertino, California</div><div><br><a href=3D"=
https://triumphstagblog.wordpress.com/"; target=3D"_blank">https://triumphst=
agblog.wordpress.com/</a><br><br></div></div></div></div>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><span>** <a h=
ref=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@autox.tea=
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