I had my valves numbered in a pizza box for lapping and i lifted the pizza box up the wrong way and every valve fell to the floor. i can tell intake apart from exhaust easily because they look different. Im lapping and doing head work anyway. My question is after lapping valves will i have issues with wear conserning the valve guides that i would need to do work on. I also have all the springs caps shims and retainers numbered in ice cube trays so they are going back into their original places. The head is from an r6 from 2002 with over head cams that are chain driven
Lapping won't solve your issues. The only thing you can do is get the valves back in the right order or take it to the machine shop and get a valve job. The problem is, the valves are matched to the seat. If you don't have them in the right spot, you're going to have leaks. Lapping only takes off small amounts of material, which isn't going to be enough to get the valve and seat mated correctly.