dont touch the part of the stem that goes inside the guide for god sake !! only clean up the bit between the stem and the head, the tulip shaped bit.
you can clean the flat face of the valve with drill and blade, and underneath the head, the tulip bit mentioned above, all the way along to the ridge of the valve stem itself, just not the smooth bit that slides inside the guide.
wouldnt recommend abrasives as it will key the surface and make it easier for new carbon to build up, just do the drill and blade trick, lightly hold the blade at an angle so it sloughs the carbon off, dont gouge the valve. afterwards give it a whizz with some T-cut on a rag, then buff with a clean rag.
didnt even get 1 valve cleaned
just noticed tonight 5 of the studs for the exhaust manifold were missin from the new head, so spent a fair while with vice grips n 2 nuts tightened to each other gettin the studs off my old head
always something to put a spanner in the works
i will try the above tommorow
sorry for being thick, but im only supposed to clean the end inch or so (from the tulip bit) ??
do u mean use the stanley for the bit that sits in the head, and a bit below, or the flat surface of the tulip, or both ??