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1275cc engine I.D
Posted: Wed Jul 15, 2026 4:40 pm
by S.Carrington
Hi, Can anyone tell me where my 1275 engine came from. The engine number pre-fix is 12CD-DA-H which is apparently an export to North America. I don't believe they had 1.3 Marina's in America. Hope you can help.
Re: 1275cc engine I.D
Posted: Wed Jul 15, 2026 5:11 pm
by svenedin
Austin Healey Sprite Mk4. Yes North America export.
Stephen
Re: 1275cc engine I.D
Posted: Wed Jul 15, 2026 9:39 pm
by philthehill
As regards the American Market - does the head have the air injection plugs fitted?
Air was forced under pressure into the cylinders to reduce pollution. See photo below:-
- MG midget exhaust air injection.jpg (58.58 KiB) Viewed 1173 times
Re: 1275cc engine I.D
Posted: Thu Jul 16, 2026 8:07 am
by S.Carrington
Thanks for the info. No the cylinder head does not have the air injection head fitted. Cheers Simon
Re: 1275cc engine I.D
Posted: Thu Jul 16, 2026 8:25 am
by svenedin
philthehill wrote: ↑Wed Jul 15, 2026 9:39 pm
As regards the American Market - does the head have the air injection plugs fitted?
Air was forced under pressure into the cylinders to reduce pollution. See photo below:-
MG midget exhaust air injection.jpg
Interesting Phil. Is that silver thing, belt driven, the so-called "smog pump" for North America?
Stephen
Re: 1275cc engine I.D
Posted: Thu Jul 16, 2026 10:22 am
by philthehill
The 'silver thing' is the belt driven smog pump.
The pump took a lot of power from the engine and performance was significantly reduced.