I have a 63 mini that I am doing some work on for a friend and it was an old autocross racer we are bringing back to street trim (somewhat)
I am trying to ID the engine and know it is a non mini S 1275 but that's as far as I can get
The motor plate number is 12H-157-H2894.
I could very well be an Austin America mill too. It has 5 head studs vivible solid block, no casting ID on the back and has a water temp iport just under the water inlet.
Any help with the id or where to get the information would be great
Thanks
Ray

 

There's some information here ... http://www.minimania.com/ArticleV.cfm?DisplayID=1801

And clicking on Community on that link you'll find the MiniMania Forum for Classic owners. There's a lot of classic knowledge on that forum.

Good luck!

 

Also note the "Engine ID for Transverse Engines" link at the bottom of the page on the above MiniMania link.