PeachParts Mercedes-Benz Forum - View Single Post - Timing Chain SOS

Ace Taxi · #63 02-22-2009, 07:46 PM

I am a little confused on this point myself. Maybe you can clarify it for me.

When we changed the TC originally, I believe that the cam lobes on #1 were at "10 & 2". Then we turned the crank one rotation, reopened the TC and turned the camshaft 180* - because we thought it would fix the IP timing problem (let's not go there again).

My understanding is that the crankshaft turns 2x for every 1x of the camshaft. Even if the cam mark and the mark on the #1 bearing cap line up at 0*TDC, how can I be sure #1 piston is the top of the stroke & not the bottom? I don't want to be half a cycle out of phase again.