Piston With Rings And Bolts
WARNING: This page is about a different car, the 2018 BMW 340i, 2017 BMW 340i, and 2016 BMW 340i. However, it is still accessible from the selected car via links, so may be relevant.
TECHNICAL DATA SPECIFICATIONS
| End clearance of center piston ring | ||
| Before measuring the end clearance, make sure the cylinder is within the permissible tolerance. | 0.20 mm... 0.28 mm | |
| End clearance of upper piston ring | ||
| Before measuring the end clearance, make sure the cylinder is within the permissible tolerance. | 0.20 mm... 0.28 mm | |
| Piston diameter | ||
| Measure the piston diameter at distance (A) from the lower end of the piston skirt. | Distance (A) to the lower end of the piston skirt | 14 mm |
| Nominal dimension of piston diameter | 81.953 mm... 81.971 mm | |
| Side clearance of center piston ring | ||
| Clean all components before measuring the side clearance. | 0.015 mm... 0.06 mm | |
| Side clearance of upper piston ring | ||
| Clean all components before measuring the side clearance. | 0.035 mm... 0.085 mm | |