hi fellas, i have a few a series bits i'm trying to identify, wanting to know if they are standard or if i have some hot bits.

ported H72?? head with
Ports in: 30mm by 37.5(ish)mm ex: 27mm x 30mm

deck height is roughly 72mm or 73 mm

is that a fairly standard port job?

i also have an a15 block with 4 cracked 1mm o/s pistons. and some sort of nissan electronic dissy (not a bluey one tho) it is quite small.

what else might have been modified or what should i look for... cam? how to i.d. it? clutch or valve springs or anything else. i think it was built by the datsun performance centre in cheltenham if that helps?

i'm thinking of building an a15 efi turbo. just researching at the moment but i have an a 14 standard bottom end as well. i read something about using the crank or something.

i'm trying to work out bottom end and head stuff at the moment.

cheers