Specifications

4M41 ENGINE -
Specifications
11B-1-2
Descriptions LimitStandard
Valve seat Seat width 1.8 - 2.2 2.8
Cylinder head Bottom surface distortion Less than 0.05 0.2
Vacuum pump
Vacuum pump Performance
Attained degree of vacuum 93 kPa or more -
Pump speed 1500 r/min -
Timing gears and balance shafts
Backlash between gears
Balance shaft gear RH and oil pump gear 0.04 - 0.19 0.3
Oil pump gear and crankshaft gear 0.04 - 0.18 0.3
Crankshaft gear and idler gear 0.04 - 0.18 0.3
Idler gear and idler gear LH 0.04 - 0.19 0.3
Idler gear LH and balance shaft gear LH 0.04 - 0.22 0.4
Idler gear and injection pump gear 0.04 - 0.21 0.4
End play
Balance shaft LH, RH 0.09 - 0.24 0.3
Idler gear/sprocket assembly 0.05 - 0.20 0.3
Idler gear LH assembly 0.05 - 0.20 0.3
Timing chain elongation (minimum distance between chain spans facing each
other when pressing on tensioner lever)
16.5 9
Tension lever-to-tension lever shaft clearance 0.06 - 0.18 0.3
Idler gear bush LH-to-idler shaft clearance 0.02 - 0.05 0.1
Idler sprocket bush-to-idler shaft clearance 0.02 - 0.06 0.1
Oil pump
Oil pump
Driven gear shaft-to-oil pump case and cover
clearance
0.03 - 0.05 0.15
Side clearance 0.05 - 0.10 0.15
Tip clearance 0.15 - 0.26 0.27
Oil cooler and oil filter
Bypass valve spring Valve opening pressure kPa 490 ± 30 -
Regulator valve spring Valve opening pressure kPa 620 ± 30 -
Piston and connecting rod assembly
Piston Protrusion -0.20 - -0.30 -
Piston pin
Piston pin-to-connecting rod bush clearance 0.03 - 0.05 0.1
Piston pin-to-piston clearance 0.007 - 0.021 0.05
Piston ring Ring-to-ring
No.1 compression ring 0.03 - 0.08 0.15
groove clearance
No.2 compression ring 0.07 - 0.10 0.15
Oil ring 0.03 - 0.06 0.15
End gap
No.1 compression ring 0.3 - 0.45 0.8
No.2 compression ring 0.4 - 0.55 0.8
Oil ring 0.3 - 0.5 0.8
PWEE9409-D
E
Feb. 2000Mitsubishi Motors Corporation Added