Mitsubishi K21 Service Manual

PISTON
• Piston (mm)
Type Thermal flow type
Material Aluminum alloy
Outer diameter Standard 88.965 - 89.015
• Clearance between piston and cylinder (mm)
Standard 0.025 - 0.045 (Selective fit service parts)
• Piston pin outer diameter (mm)
Standard 19.993 - 19.998
• Piston pin fitting quality
Standard To a degree allowing movement by hand
• Piston ring end clearance (mm)
Standard Top 0.28 - 0.43
Second 0.45 - 0.60
Oil 0.20 - 0.60
Various limit values 1.00
• Clearance between piston ring and ring groove (mm)
Standard Top 0.045 - 0.080
Second 0.030 - 0.070
Oil —
Repair limit Top 0.10
Second 0.10
Oil —
CONNECTING ROD
• Distance between both end hole centers (mm)
Standard 143.970 - 144.030 (K25)
152.470 - 152.530 (K21)
• Large end hole diameter (mm)
Standard 48.0 - 48.013
• Small end hole diameter (mm)
Standard 19.965 - 19.978
• Bend (per 100 mm) (mm)
Repair limit 0.05
• Torsion (per 100 mm) (mm)
Repair limit 0.05
• Large end thrust clearance
Standard 0.2 - 0.3
Repair limit 0.40
• Large end oil clearance (mm)
Standard 0.030 - 0.066
Repair limit 0.10
• Difference of weight (Piston combination) (g)
Standard 4 or less
GI-16
STANDARD AND REPAIR LIMIT

Mitsubishi K21 Specifications

General

Brand	Mitsubishi
Model	K21
Category	Engine
Language	English