1999 W210 E300 Turbo Diesel........Engine very loud.....Strange Noise

[BigRed0803]

Ok long story short. I purchased a 99 E300D from the original owner, knowing that a shop he took it to broke one of the glow plugs off in the head. The car still started fine and ran great, only had 140k on it, excellent condition. I drove it for around a month before I decided to tackle the job. I took head off, had broken gp removed at machine shop. Got very busy and didn't get around to putting head back on for probably 6-7 months. Also replaced all plastic fuel lines, and the o-rings @ the top of IP for each cylinder. I didn't do any head work, just replaced head gasket. Put everything back together. Started up fine. Alittle loud but I figured it would quiten down. I have driven the car for around 1k and the motor is still very loud. I can't seem to pinpoint where it is coming from, I have cracked all injectors and none of them kill the noise. The tensioner is fine. I have purged the fuel system and no luck. I took the valve cover back off to make sure both my cams were in time and they were right on the money. I thought my IP may be off alittle in timing and be making the noise, which it was, I have the Mercedes timing tool and got it set in time but still have the noise. Do these motors ever have a problem with the lifters? I am stumped, the lifters are the only thing I can come up with but there are so many of them I don't want to spend the money if I don't have to. The sound is definitely in the top section of the motor. I have messed around with a few of these same cars so I know how they are supposed to sound and trust me this car is loud. I purchased another 99 E300 and it is alot quiter than this one. Any ideas are appreciated.