Just looking at all your head pics errol and I have a couple of questions.
Shouldn't the plugs all be indexed to the same angle to help ignition and flame travel ?
I have also hit the diegrinder onto the oil gallery between the pushrods....thought it seemed like a good idea at the time.
You don't seem to have cut away much area for the exhaust valve. I had to take a fair bit out to get the welltites in there. Did you replace the seats or just blend the originals to suit the larger valve ?
Or did you blend the chamber to this shape so it doesn't look as bad ? Should I do this ?
My chambers are 24cc at the moment so I could afford to lose alittle anyway to get the compression down from 12.9 (assuming I calculated right). I was thinking of using a shim plate to drop it alittle anyway.
Do I need to get the same polish finish on mine or does alittle roughness enhance swirl ?
I notice you've also taken out the remained of the valve guide to get more flow. Does this effect the valve train (weaken it) by allowing the valve to flex on the shaft or move around ?
If I had a camera I'd take some pics of the engine while its in pieces.
I pulled the head off mine on the weekend just for a peek. I've decided to put it back together and run it without the new cam for now just to get it out there.Seems the pistons are hyperutectics so they will do for now.