LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 1983 >> Impulse Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN [B],1.9L [A], 1.95L 4-CYL - VIN [A] >> Engine Identification >> Fitting Rings

Fitting Rings

  1. Position rings into cylinder bore at a point where bore diameter is smallest. Ring must be square in bore. Measure ring end gap with a feeler gauge. Replace rings if end gap is larger than 0.059" (1.50 mm).
  2. Using a feeler gauge, check ring side clearance. Ensure rings turn freely in their ring grooves. Replace pistons and rings if side clearance is greater than 0.006" (.15 mm).
  3. On Impulse models, compression rings will have a piston size mark stamped on top. Standard rings have no marks. A No. 1 compression ring that is .5 mm oversize will have "50" stamped on top. No. 2 compression rings have a "100" stamped on top for the 0.5 mm oversize. All 1.0 mm oversize rings have a "100" stamped on top.
  4. Standard oil rings on Impulse models are painted Red. The 0.5 mm oversize are painted Blue. The 1.0 mm oversize are painted Yellow.
  5. Ensure that end gap is correct when installing rings. See Fig 1 . Install oil control rings in this order: expander ring, lower side rail, then upper side rail.
  6. Position compression rings so that "N", "NPR", or "TOP" mark is upward. Oil control rings are not marked.
Fig 1: Piston Ring Gap Spacing
G80072
scientia non olet · About LEMON Manuals