I am Currently rebuilding this 230.4 and for the love of god I cant find any type of torque specs or timing specs on this car the block is stamped m011 the head is stamped m016 and idk exactly what has been eliminated but there is what looks to be a secondary air injection pump on the lower driverside of the motor and it also has tubing going into the side of the head at each cylinder that has been blocked and clamped off the owner bought the car thinking it had 30000 on it but it smoked like crazy so he was having me rebuild it but like I said it seems as if there is not 1 single website that has any of the specs or atleast anything in English everything I find is in german and I'm really starting to get frustrated I know I can do the job its just trying to find the info I need to get it done so if anyone can help me out that would be greatly appreciated

You could try U.K. book stores. I found a english version of a haynes manual for the 280m110 w123 that is not available in the U.S.
edit; found it as pdf here. http://crazyaboutmercedes.com/en/mercedes-benz-engine-manuals/4-mercedes-benz-service-manual-engines-m-115.html

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Chris
84 280sl
82 300d euro