I have my motor apart and looking for wisdom about cleanaing up valve area,the dome and top of pistons,just covered in carbon,Thanks

 

Spray on gasket remover , or paint stripper is the same thing and you have let is work for a while with some scrapping for heavy stuff . Second option is a brass wire wheel on the cordless drill jus plug the oil return holes .

 

I can even use this brass wire wheel on pistons and combustion chamber? and what about bead blasting or polishing after?

 

Narrow scraper, screw driver or whatever is handy. Just the build up, not the aluminum. Little bit of thinner on a shop towel. It's just coming back. Need not be perfect for a street bike. It's actually cooked oil since unleaded gas will only deposit a small amount and flakes off unlike years ago with leaded gas. Just my opinion. Little late for this but went thru a Z28 al head motor while back. Was leaking water in two cylinders. They were clean. All the others had 3/32 of cake on them. Not sure what it would take but revving to 3-4K and a steady fine mist in the carb use to be a fix in the 60's. I probably would not bother trying that and I sure would not do it unless I was tearing it down anyway.

 

Think about the violence that goes on in that combustion chamber, a cheap wire wheel isn't going to hurt believe me just blow it out real well and any micro particles are going right the exhaust in the first 1/2 second it runs .

 

now what about porting and polishing? seeing as I am a metal polisher by trade ,I really want to get into it,and make it shiny

 

You can clean them up and polish the dome area but i wouldn't do much but clean up the rough castings in the ports . A good port job they actually add material and reshape the intakes , just smooth out the exhaust side and don't go crazy around the guide boss .