How to Replace Piston Rings?

[SanRafael]

When replacing piston rings, attention should be paid to side clearance and end gap. Here is a partial introduction: End gap: Refers to the gap between the two ends of the piston ring when placed in a standard ring gauge or in the unworn section of the cylinder bore. This gap should be controlled within 0.45-0.10mm, 0.39-10.10mm, and 0.50-1.00mm. This gap prevents the piston ring from seizing due to thermal expansion. Side clearance: Refers to the gap between the side of the piston ring and the ring land when the ring is placed in the piston ring groove. Excessive side clearance can affect the sealing of the piston, while insufficient side clearance can cause the ring to seize. The recommended clearance is 0.05-0.11mm for the first compression ring, and 0.03-0.09mm for the remaining compression rings and oil rings.