Piston markings ID10 R43 STD

[Steve A]

Any ideas what make and fitting these pistons are the markings on the crown are ID10 R43 STD. Thanks

[ianh1968]

A few more details wouldn't go a miss...
If you give the "Google-ferrets" here something to go on, you might get more of a response!

For example, are they small bore or large bore.
What is the actual diameter (across the skirt) and pin size,
Dished, flat or raised...
"STD" could be one of any number of sizes, A-Series, Ford, Triumph, including this:

http://www.ebay.co.uk/itm/Norton-Hepoli ... 1189847351

It has "R43" in it and is Hepolite, so this could be a clue.

Ian

[Steve A]

Cheers Ian, they are still in the 1275 engine which is 11 stud block possibly early 1300gt. They are dished but looking I would guess at around 6-8cc ? I was hoping they might hold the key to the engine as unfortunately there is no number tag or head with it.