Piston Ring: Labor Times

	Standard Hours	Manufacturer Warranty Hours	Skill Level	Notes
Replace
911
2WD
Manual Trans
Without AC	29.3	20.9	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
With AC	30.4	21.6	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
Auto Trans
Without AC	30.7	21.9	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
With AC	31.6	22.6	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
4WD
Manual Trans
Without AC	29.8	21.3	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
With AC	30.8	22.0	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
Auto Trans
Without AC	31.2	22.3	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
With AC	32.2	23.0	A	Includes: R&I Engine, Connecting Rod Bearings & Hone Cylinder Walls.
NOTE
To R&R Connecting Rod Bearings, Add
Each	0.1	0.0	A
To R&R Piston, Pin or Connecting Rod, Add
One	0.2	0.0	A
Each Additional	0.1	0.0	A
All	0.7	0.0	A
To Grind Valves, Add
All Cyls	9.2	0.0	A
To R&R Spark Plugs, Add	0.6	0.0	A