PeachParts Mercedes-Benz Forum - View Single Post - OM617: Finding TDC on cylinders 2-5?

sailor15015 · #22 11-07-2006, 07:07 PM

I have the head off my project engine right now and it is amazing how little clearance there is between the head and the pistons. At tdc, the pistons are nearly even with the block and there is hardly any recess of the head above the pistons to speak of. The firing order of the 617 is 1-2-4-5-3, correct? Set #1 at tdc using the pulley markers and do its seals. Rotate engine so both lobes of #2 are facing up(shouldn't take too much rotation, about a fifth of a turn) and do the same thing. Repeat in the order the pistons fire and you should always find tdc. That seems logical to me. Anything I'm overlooking?

A little OT-Leathermang, I'm having some head work done on my project engine right now and I get it back tomorrow. I think they're shaving the head to make sure its flat but I'm not sure. Should I install extra shims underneath the prechambers just to be safe? I've got the tools to pull them so its no big deal.