Page 1 of 1
Cylinder Head id'ing
Posted: Thu Sep 18, 2025 1:29 pm
by POMMReg
Hoping to include this info within the Minor id tombe - anyone please confirm what these are, any what years?
28G 69 & 28G 79
2A 629
12A185
12A 1456
12G 202
12G 206
12G 295
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 2:53 pm
by svenedin
12G202 is a standard A-series 1098cc head. Used throughout the 1098cc Minor production and also the Mini 1098 and Sprite/Midget 998cc.
Stephen
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 3:13 pm
by les
12g295 998cc Mini Cooper. Still working on the infamous book then !!
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 4:28 pm
by philthehill
- cyl head details (1).jpg (762.93 KiB) Viewed 61288 times
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 4:31 pm
by POMMReg
les wrote: ↑Thu Sep 18, 2025 3:13 pm
12g295 998cc Mini Cooper. Still working on the infamous book then !!
Well, yes
Back last year, given 2 crisp boxes FULL of service parts books from a local garage - covering pre-war to '80s vehicles - number of Morris Minor "change points" quoted, but not mentioned anywhere else, had to go through these before continuing.
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 4:38 pm
by POMMReg
philthehill wrote: ↑Thu Sep 18, 2025 4:28 pm
cyl head details (1).jpg
Thanks Phil, isn't the 2A 628 an error for 2A 629 - missread 8 instead of 9?
When was the head number switched to the thermometer housing?
Will start collecting block casting numbers next, whether anyone knows what's what
Re: Cylinder Head id'ing
Posted: Thu Sep 18, 2025 6:39 pm
by philthehill
There appears to be both 2A628 and 2A629 heads.
It should be noted that BMC were prone to giving casting numbers one number up from the part number which may be the case as regards the 2A628 and 2A629 heads.
Re: Cylinder Head id'ing
Posted: Fri Sep 19, 2025 1:37 pm
by POMMReg
POMMReg wrote: ↑Thu Sep 18, 2025 1:29 pm
Hoping to include this info within the Minor id tombe - anyone please confirm what these are, any what years?
28G 69 & 28G 79
2A 628 = 803
2A 629 = 948/1098?
12A185 = early 948 (APJM?)
12A 1456 = 948
12G 202 = 1098 - square in ports
12G 206 = 1098 - large as above
12G 295 = Mini Cooper
Is this any good, comments/corrections/hysterical mickey taking welcomed