Casting Block Numbers

[mini1973]

Hi

I have been trying to research the casting numbers for Blocks, Cylinder Heads and Gearboxes.

Looked in the Original Mini Cooper and Cooper S book by John Parnell to no avail. Is this information in the book? Or is there a link on this site for this information?

Thank you in advance.

[Peter Laidler]

Have a look in the search facility. There are pages and pages of info re casting numbers and how to interpret what the configurations relate to

[mini1973]

Have a look in the search facility. There are pages and pages of info re casting numbers and how to interpret what the configurations relate to

Thanks, I will try and have a search later.

[Spider]

There's some here;-

https://www.minispares.com/catalogues/c ... px?1~1~234

[mk1]

1 12A497 998 thick deck pre A+
1 WFM1026 on front 998 A Plus (with WFM1026/4 on back)
1 AEG131 Cooper S 970
1 AEG151 Cooper S 1070
1 AEG312 Cooper S 1275 thin deck
1 AEG312& AEG634 Cooper S 1275 block stamping thick deck
1 12G1279 1275GT / 1275 no tappet chest pre A plus
1 WFM1024 on back 1275-A plus 5/8" oil filter pipe thread
1 WFM1024 1275-A plus 11/16" oil filter pipe thread
1 LCF103200 1275 A plus MPI

[mk1]

Date codes on blocks read like this:

Assuming "S DD M Y" format of the block date code:

S = Shift. A=first, B=second
DD = one or two digit day-in-month
M=Month letter, see note below
Y=Year digit

So far, we have found photos/details of AEG312 blocks with all letters A through M except B,E,I.

I suspect letter "I" is skipped, so the resulting table would be:

A Jan
B Feb
C Mar
D Apr
E May
F June
G July
H Aug
J Sept
K Oct
L Nov
M Dec

Props to Paul Harris [TECH396] for the groundwork he did identifying sequences on other marques.

[mini1973]

Date codes on blocks read like this:

Assuming "S DD M Y" format of the block date code:

S = Shift. A=first, B=second
DD = one or two digit day-in-month
M=Month letter, see note below
Y=Year digit

So far, we have found photos/details of AEG312 blocks with all letters A through M except B,E,I.

I suspect letter "I" is skipped, so the resulting table would be:

A Jan
B Feb
C Mar
D Apr
E May
F June
G July
H Aug
J Sept
K Oct
L Nov
M Dec

Props to Paul Harris [TECH396] for the groundwork he did identifying sequences on other marques.

Thank you. A lot of research has gone into that list.
I am surprised that this information is not in the John Parnell book.

Kind Regards

[mk1]

It wasn't available when John wrote the book. It was only deciphered by our members iain1967s & TECH396 in the last year or so.

[AndyPen]

Apologies for my earlier post (now gone), but this was the link I thought I had posted - to earlier discussion on here


https://mk1-forum.net/viewtopic.php?f=3 ... 63601d8b01

[mk1]

Thanks for finding the original post Andy.

M

[bubbacluby]

Date codes on blocks read like this:

Assuming "S DD M Y" format of the block date code:

S = Shift. A=first, B=second
DD = one or two digit day-in-month
M=Month letter, see note below
Y=Year digit

So far, we have found photos/details of AEG312 blocks with all letters A through M except B,E,I.

I suspect letter "I" is skipped, so the resulting table would be:

A Jan
B Feb
C Mar
D Apr
E May
F June
G July
H Aug
J Sept
K Oct
L Nov
M Dec

Props to Paul Harris [TECH396] for the groundwork he did identifying sequences on other marques.

Here are some B's

[251 ENG]

All 1071/970 blocks have it cast on front .
Early 1275 also on front then moved to backas in previous pictures

[mini1973]

There's some here;-

https://www.minispares.com/catalogues/c ... px?1~1~234

Thank you

[mini1973]

It wasn't available when John wrote the book. It was only deciphered by our members iain1967s & TECH396 in the last year or so.

[iain1967s]

Also recently posted by NZmember is this comprehensive MiniSpares page which has extensive cylinder head casting history, and includes an original BL document “Date Standard for Ferrous Castings” at the bottom which shows the same scheme was still being used into the 70s/80s.

Copy attached.

[janerick3]

When were the castings changed over to thick flanges?

I have a thin-flange block that appears to have a September 1967 casting date (engine is in the car so it is hard to read).

[mk1]

Sept 67 is the absolute last gasp of the thin flange block. I doubt there are any younger than that.

[mini1973]

Also recently posted by NZmember is this comprehensive MiniSpares page which has extensive cylinder head casting history, and includes an original BL document “Date Standard for Ferrous Castings” at the bottom which shows the same scheme was still being used into the 70s/80s.

Copy attached.

Thanks for all the information everyone.

Anyone have a list of Gearbox casting numbers?

[251 ENG]

Here is a late thin flange

[Nevsmini]

Any info on the earliest thick flange block casting.