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General Specifications - Piston

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
GENERAL SPECIFICATIONS - PISTON

Item Specification
Diameter 
Coded Red 88.962 - 88.978 mm (3.5024 - 3.5031 in.)
Coded Blue
Coded Yellow
88.988 - 89.004 mm (3.5035 - 3.5041 in.)
89.014 - 89.030 mm (3.5045 - 3.5051 in.)
Piston-to-Bore Clearance
Service Limit
0.030 - 0.056 mm (0.0012 - 0.0022 in.)
0.081 mm Max.
Service Piston Selection  (1) 
Piston Bore Diameter
89.009 - 89.035 mm (3.5043 - 3.05053 in.)
Service Piston Grade
Required
RED
89.035 - 89.060 mm (3.5053 - 3.5063 in.)
89.060 - 89.086 mm (3.5063 - 3.5073 in.)
BLUE
YELLOW
Ring Groove Width 
Compression (Top) 1.530 - 1.555 mm (0.0602 - 0.0612 in.)
Compression (Bottom)
Oil
1.530 - 1.555 mm (0.602 - 0.612 in.)
4.030 - 4.055 mm (0.1587 - 0.1596 in.)
Piston Pin 
Length
Diameter
76.5 - 77.2 mm (3.012 - 3.039 in.)
23.162 - 23.175 mm (0.9119 - 0.9124 in.)
Pin to Piston Clearance
Pin to Rod Clearance
0.005 - 0.012 mm (0.0002 - 0.0005 in.)
Press Kit 4 Kilo Newtons (900 Lbs.)
Piston Pins 
Ring Width  
Compression (Top) 1.460 - 1.490 mm (0.0575 - 0.0587 in.)
Compression (Bottom) 1.460 - 1.490 mm (0.0575 - 0.0587 in.)
Oil Ring Side Seal - Snug Fit
Service Limit Side Clearance
0.15 mm Max.(0.006 in. Max.)
Ring Gap  
Compression (Top) (in Gauge) 0.25 - 0.50 mm (0.01 - 0.02 in.)
Compression (Bottom) (in Gauge)
Oil Ring (Steel Rail) (in Gauge)
0.25 - 0.50 mm (0.01 - 0.02 in.)
0.25 - 1.25 mm (0.010 - 0.049 in.)
Side Clearance  
1st Ring
2nd Ring
0.040 - 0.095 mm (0.0016 - 0.0037 in.)
0.040 - 0.095 mm (0.0016 - 0.0037 in.)
(1) When replacing pistons, measure the cylinder bore as described in ENGINE SYSTEM-GENERAL INFORMATION and install the indicated service piston.