Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)07 · Engine – mechanical (V6)
07 · Engine

Rods

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Piston Rings and Oil Scraper Ring › Rods
Engine – mechanical (V6)Rods · page 1 of 2
  1. Insert the piston rings inside the cylinder liner and check the dimension of the gap "L" with a feeler gauge.
Gap "L"
First ring 0.30 to 0.50 mm
Second ring 0.30 to 0.50 mm
Oil scraper ring Borgo 0.30 to 0.50 mm
Goetze 0.25 to 0.50 mm
Hand inserting a feeler gauge into the gap of a piston ring inside a cylinder liner.

RODS

  • Visually check the rods for signs of cracking, scoring or excessive wear.
  1. Using a bore gauge and a centesimal dial gauge, measure the diameter of the rod bushing and check that it is within the prescribed limits.
Diameter of rod small end bushing hole
22.005 to 22.015 mm
Hand using a dial gauge to measure the diameter of a rod bushing hole on a connecting rod.
  • Lubricate the piston rings with clean engine oil, and install them onto the piston.
  1. Using a feeler gauge measure the play between piston rings and oil scraper ring and relative seatings on piston and check that it is within the prescribed limits.
Axial play between oil rings and seatings
First ring 0.035 to 0.070 mm
Second ring 0.035 to 0.070 mm
Oil scraper ring 0.025 to 0.055 mm
Hand using a tool to insert a piston ring into a cylinder liner.
Diagram showing the axial play

Parts & tools for this job For 1992 Alfa Romeo 155

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