Pistons, Pins and Rings
PISTONSType Material Aluminum Alloy Tin Coated
Clearance at Size Location 0.025 - 0.057 mm (0.001 - 0.0022 in.)
Weight (Std. Only) 381 +/- 5 gms
Pistons For Service Standard Only
PISTON PINS
Type Press Fit in Rod (Serviced as an Assembly)
Diameter 22.88 mm (0.9007 - 0.9009 in.)
Length 67.25 - 67.75 mm (2.648 - 2.667 in.)
Clearance in Piston,
Light Thumb Push @ 70°F 0.006 - 0.019 mm (0.0002 - 0.0007 in.)
Clearance in Rod (Interference)
PISTON RINGS
Number of Rings Per Piston 3
Compression 2
Oil 1
Oil Ring Type 3 - Piece, Steel Rail, Chrome - Face
Ring Width
Compression 1.46 - 1.5 mm (0.0575 - 0.0591 in.)
Oil - Steel Rails 0.510 mm (0.0201 in.)
Ring Gap
Compression 0.300 - 0.550 mm (0.0118 - 0.0217 in.)
Oil - Steel Rails 0.250 - 1.00 mm (0.0098 - 0.0394 in.)
Ring Side Clearance
Compression 0.030 - 0.095 mm (0.0012 - 0.0037 in.)
Oil - Steel Rails 0.014 - 0.226 mm (0.0005 - 0.0089 in.)
Service Rings - Ring Gap
Compression 0.300 - 0.550 mm (0.0018 - 0.0217 in.)
Oil - Steel Rails 0.250 - 1.00 mm (0.0098 - 0.0394 in.)
Ring Side Clearance
Compression 0.030 - 0.095 mm (0.0012 - 0.0037 in.)
Oil - Steel Rails 0.014 - 0.226 mm (0.0005 - 0.0089 in.)