A friend of mine and I have installed a 1987 Mercedes 300D OM602 motor into a 1973 Mercedes W114 220D. We had to remove the AC Compressor as it would not fit. We put in a smaller serpentine belt but it is loose and screeches. Does anyone know the size of the belt w/o the AC Compressor? I am not a fan of using an anti stop slip for the belt.