I'm doing the exact same thing on my 190E and I didn't mark anything at all because I found factory stamped marks on all necessary parts, there were also marks from previous jobs, but since this is an engine and any type of mark you manage to put on it is bound to get wiped accidentally I stick with factory marks. I found clear marks on the crankshaft pulley, camshaft, and distributor, anything else needed?

My head is going in for some work tomorrow.

Perhaps we can both share a little of what we learn and in doing so keep our cars running longer and happier.

xp

__________________
1985 190E 2.3L - a constant project.