[Healeys] Numbers on engine block

BJ8Healeys sbyers at ec.rr.com
Tue Dec 11 15:08:04 MST 2018

Among other numbers and letters, H 13 is stamped on a mating sump surface of the main block and the front and rear mating parts of the engine.  I surmise that these numbers are similar to the body parts codes in that they ensure that those items are kept together during manufacture of the engine.


Steve Byers


BJ8 Registry

AHCA Delegate at Large

Havelock, NC  


On Tue, Dec 11, 2018 at 9:21 AM <simon.lachlan at alexarevel.plus.com> wrote:


This is one for those of you who know about numbers stamped into our cars. Not important…I’m just curious.

So, I was lying under the MkII BT7 last night scraping the remnants of the cork gasket and vile sealant off the bottom of the block where the sump attaches. I was looking upwards, despite the rain of bits, and saw some numbers and letters stamped into that bottom face.

We’re talking about the bottom corner of the engine, nearest the starter. Under the gasket, starting in the corner going towards the centre.

Each letter or numeral being +/- 8mm.











Approximately like that. Don’t know how it’ll appear in your computers….

The “2” in the “20”, 3rd line down, is actually a “1” with a “2” stamped on top.

My car’s details, for cross reference, if any:-

Chassis no.                  HBT7 18111

Engine no.                   29E/RU/H4590

Body                           18,088

Production Lot            3,095

Completed, I think, 15th March ‘62


Any ideas?

(Don’t going tearing off to rip your sumps off to have a look….ain’t worth it!)





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