Does anybody have pictures of the extra holes drilled into another A series head for the different oil feeds to the rocker assembly? I have an old type A12 and have a H89 A14 head to put on. I can match the gasket up and drill but am unsure on other details such as depth and whether I have to tap that hole drilled etc.

If you bring them around, I can show you what has to be done.

i don't mean to be a pain in the ar5e, but can you describe it?

we'll be needing to put an A14 head on an A12 in a 120Y soon and need to know "how to"...

If the A12 is out of a 120Y. ie. the distributor is at the back of the block with the alternator at the front on the same side then the A14 head will just simply bolt on. It is only the older A12s like mine out of the early 1200's with the alternator and distributor on different sides that need drilling as above.

just need to get oil to that undersize shaft head bolt. So its a simple case of drilling vetically into the head from the gallery in the block, then horizontally across to that bolt hole. Of course you'll need to plug off the outside of that horizontal hole.