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1275 engine

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hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
Hi,
need to find out which engine and gearbox is in my car,
Engine number RKM1126E 13669
There are also some numbers on the block
see picture attached.
I need a clutch and ring gear plus 3 core plugs.
The one`s for a 1000 engine not compatible.

The clutch plate has this on it.
Type-6-6.5DS
Leamington spa England
Borg & Beck co

The clutch has the number stamped on reads
57677

I went to leadbetters, Morris Minor specialist .
He does not have these parts in for a 1275,
He seems to think its out of another vehicle







Thanks Ian.

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Attachments:
750_0573.jpg    63.7 KB
750_0573.jpg

hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
Done some research it is looking like the engine & gearbox
out of an MG Midget
Need to find a suppliers to take parts too.

pixelsmithusa Avatar
Ian,

As I have previously mentioned, this is a number used on factory reconditioned engines. Morris Minors did not come with 1275 engines, so while your supplier may not have parts, any British parts supplier that carries parts for MG Midget or Austin Healey Sprite will have what you need. There is otherwise nothing unique about your engine that will require some obscure parts to be sought.

Because there are two different casting numbers, I have asked for the casting number on your cylinder head, but you have never replied.



Gerard

http://gerardsgarage.com/



Edited 1 time(s). Last edit at 2017-09-02 12:46 PM by pixelsmithusa.

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hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
sorry,
Will look for a number on the head.
Thanks Ian.

hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
Just looked,
Its got 18 stamped on the left,
In the middle is 67 in large numbers and 940 in small,
Its got 19C on the right.
Hope this helps.
Thanks Ian.

pixelsmithusa Avatar
940 is the identifier. It should read 12G940.

That is a correct (non-emissions) head for a 1275.

In reply to # 25890 by hemm999 Just looked,
Its got 18 stamped on the left,
In the middle is 67 in large numbers and 940 in small,
Its got 19C on the right.
Hope this helps.
Thanks Ian.



Gerard

http://gerardsgarage.com/



Edited 1 time(s). Last edit at 2017-09-02 01:51 PM by pixelsmithusa.

hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
I cannot see that number anywhere on the head,
Will take pictures tomorrow,
and put them on here.
I have had the head skimmed now.
Thanks Ian.

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pixelsmithusa Avatar
On a 1275 head, the casting number is between the two middle pedestals and the pushrod side. You can clearly see the "12G940" above the tape, and below "MOWOG" in this photo. The head below it is also a 1275 head, but is the 12G1316, which is the emissions head. You can see the casting number in the same location.



Gerard

http://gerardsgarage.com/



Edited 2 time(s). Last edit at 2017-09-02 03:44 PM by pixelsmithusa.


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hemm999 Avatar
hemm999 Ian Hemmingway
Manchester, lancs, UK   GBR
Picture as promised.
Ian.

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Head 6.jpg

usmh3 Avatar
usmh3 Rob Thomas
Cardiff, Wales, UK   GBR
I THINK you may have a very early 1275 head there since the main stud holes aren't drilled in the centres of the abutments in the head casting, above the plug holes. I had an early 1275 with the thin flange block and EN40 crank and the head was badly drilled so that the head wasn't quite lined up right. I've only ever seen this on early heads. Perhaps the '67' on the casting is a date stamp? You have a thick flange block so it has been rebuilt at some point.

Your clutch numbers show a 6 spring clutch of 6.5 inch diameter, suggesting standard 1275 clutch components.

pixelsmithusa Avatar
In the US, the 12G940 head was only on the early thin flange block. The 12CC (thin flange block) was quickly superseded by the 12CD (now with thick flange block), which also had the emissions head (12G1316) The 12CD engine began in January 1968. For other than North American export, the 12CE engine was in production from the same starting point as the 12CD, and can only assume it continued with a non-emission head (12G940), at least for some amount of time until evaporative loss system was introduced. Horner indicates there were two different castings of the 1275 head, but the difference is in the shape of the exhaust port around the valve guide, so closer inspection is required to identify.

I've never seen one that wasn't cast with the full number "12G940", so this could indeed be a very early one.

In reply to # 25906 by usmh3 I THINK you may have a very early 1275 head there since the main stud holes aren't drilled in the centres of the abutments in the head casting, above the plug holes. I had an early 1275 with the thin flange block and EN40 crank and the head was badly drilled so that the head wasn't quite lined up right. I've only ever seen this on early heads. Perhaps the '67' on the casting is a date stamp? You have a thick flange block so it has been rebuilt at some point.

Your clutch numbers show a 6 spring clutch of 6.5 inch diameter, suggesting standard 1275 clutch components.



Gerard

http://gerardsgarage.com/



Edited 1 time(s). Last edit at 2017-09-03 04:55 PM by pixelsmithusa.

emjay Jim English
Marietta, PA, USA   USA
I don't see any MOWOG name anywhere. Were there other manufacturers? What is the logo between number 3 and number 4?

pixelsmithusa Avatar
Not sure which picture you are referring to, but MOWOG does not always appear, and except for the casting number, examination of most heads will not reveal then as having identical casting numbers otherwise. I assume the other logo is a foundry mark, and other identifiers indicate foundry variations. Here's a sample of more than a dozen heads I have, no two of which have identical casting identifiers. Some have MOWOG cast, most do not.

The 12G940 head continued into the A+, Metro Turbo Maestro/Montego, Mini and fuel injected engines, so there are many variations of this head, all the way into the last of production of A-series engines in the early 2000s

In reply to # 25914 by emjay I don't see any MOWOG name anywhere. Were there other manufacturers? What is the logo between number 3 and number 4?



Gerard

http://gerardsgarage.com/



Edited 1 time(s). Last edit at 2017-09-03 02:12 PM by pixelsmithusa.


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emjay Jim English
Marietta, PA, USA   USA
I was referring to the picture the OP posted. That's interesting that there is no uniformity of where the various annotations are located or even exist, especially something like MOWOG. Most likely a combination of tooling replacement and different sub-contractor. A head is not a typical after market item. Was the OHV design Austin engine licensed to others like the Austin 7 was?

usmh3 Avatar
usmh3 Rob Thomas
Cardiff, Wales, UK   GBR
Between 3 and 4 looks to be similar to the diamond mark used by Qualcast and Birmid. It is the same mark as found on one of my Series MM heads.

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