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Ulla
The A90 Atlantic 2.6 litre 4 cylinder is basically the same. The only
difference is that the A-H has a 2 bolt distributor fitting whereas the A90
has one. This however is a bit of a simplification because there was a
small amount of overlap with early 100 having blocks with only one fixing
bolt and very late A90s having two. To make this more complicated if
it were BMC Gold seal replacement engines. These could be delivered with
either one bolt or two. It is possible to fit a A-H distributor to a single
bolt version but the mounting plate has to be from an A90.
All other 2.2 and 2.5 litre blocks have different bores so this can be
measured fairly easily. Another point is that later blocks had
different fittings such as the push rods.
Another possible different version was from a diesel block as fitted to
London Taxis etc.
On Wed, 26 Aug 2020 at 14:21, Ulla &Sven Ordell via Healeys <
healeys@autox.team.net> wrote:
> Friends !
>
>
>
> A mate has asked me for help. He has been offered what appears to be a NO=
S
> 100/4 block, nice, but two questions has come up.
>
> 1 How do I tell if it is a genuine 100/4 block or one from any other
> Austin/BMC with the same basic engine, and 2 any guidance on price tag?
>
> Any guidance thankfully accepted.
>
>
>
> Best regards
>
> Sven
>
> Ex BJ8 now =E2=80=9Conly=E2=80=9D MMM M.G.s
>
>
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>
--=20
Best wishes
John Harper
AHC UK 100 Register Secretary
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<div dir=3D"ltr">Ulla<div><br></div><div>The A90 Atlantic 2.6 litre 4 cylin=
der is basically the same. The only difference=C2=A0is that the A-H has a 2=
bolt distributor fitting whereas=C2=A0the A90 has one. This however is a b=
it of a simplification because there was a small amount=C2=A0of overlap wit=
h early 100 having blocks with only one fixing bolt and very late A90s havi=
ng two. To make this more complicated if it=C2=A0were BMC Gold seal replace=
ment engines. These could be delivered with either one bolt or two. It is p=
ossible to fit a A-H distributor to a single bolt version but the mounting =
plate has to be from an A90.</div><div><br></div><div>All other 2.2 and 2.5=
litre blocks have different=C2=A0bores so this can be measured=C2=A0fairly=
easily. Another point is that later blocks had different=C2=A0fittings suc=
h as the push rods.</div><div><br></div><div>Another possible different=C2=
=A0version was from a diesel=C2=A0block as fitted to London Taxis etc.</div=
></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Wed, 26 Aug 2020 at 14:21, Ulla &Sven Ordell via Healeys <<a hre=
f=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>> wrote:<b=
r></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 lang=3D"SV">
<div class=3D"gmail-m_-4713205817869499251WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Friends !<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">A mate has asked me for help. H=
e has been offered what appears to be a NOS 100/4 block, nice, but two ques=
tions has come up.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">1 How do I tell if it is a genu=
ine 100/4 block or one from any other Austin/BMC with the same basic engine=
, and 2 any guidance on price tag?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Any guidance thankfully accepte=
d.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Best regards <u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Sven<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Ex BJ8 now =E2=80=9Conly=E2=80=
=9D MMM M.G.s<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11pt;line-he=
ight:106%;font-family:Calibri,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
</div>
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Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a href=3D"h=
ttp://autox.team.net/archive" rel=3D"noreferrer" target=3D"_blank">http://a=
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eam.net</a><br>
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r" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
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<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
class=3D"gmail_signature"><div dir=3D"ltr">Best wishes<div><br></div><div>=
John Harper</div><div><br></div><div>AHC UK 100 Register Secretary</div></d=
iv></div>
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