I am slow to pick up on this thread, but I am enjoying it – it takes me back to the delights of discovery of all those lovely things that go to make up an Aprilia engine. When removing the head, Ed’s/Ade’s cautionary note about not losing the cam wheel vernier pin is a wise one. I recall it’s threaded on the inside (2BA?) and putting a screw in it (with string attached) to pull it out is something else to remember. And don’t look for head bolts – there are nuts on studs! Then, when the head is off, cross fingers and look down the bottom of the block to see how deep the corrosion pits are.
