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Home >> Plymouth >> 1985 >> Conquest 2.6 H, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 2.6L 4-CYL - VIN [E] & 2.6L 4-CYL Turbo - VINS [H,N] >> Overhaul >> Piston & Connecting Rod Assembly >> Piston Rings

Piston Rings

  1. Measure piston ring side and end clearance for all pistons and replace rings as necessary. When replacing rings without boring, check ring end gap at lower part of cylinder that is less worn. When replacing a ring, be sure to use one of the same size.
  2. Install rings on piston with end gaps staggered at 120° intervals. Ensure no ring gap is in line with thrust face of pin bore. Also ensure manufacturer's marks are facing upward when rings are installed.
Fig 1: Piston Ring Gap Positions Stagger ring gaps to minimize compression loss.
G82080
CAUTION: Install oil ring first without using a ring expander. Expander gap should be installed more than 45° from side rail gaps, and rails should turn smoothly when installed.
PISTON RING SIZES

Ring Size Size Mark
Standard No Mark
0.25 mm Oversize 25
0.50 mm Oversize 50
0.75 mm Oversize 75
1.00 mm Oversize 100
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