The piston ring end gap is 0.2-.04 for ring grooves 1 & 2, and 0.2-0.45 for the oil ring.
The piston ring clearance to the pistons are; Top 0.015-.05
Middle is 0.02-.04 & oil control is 0.01-0.45.
Piston to cylinder clearance is 0.03-0.04
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)