Mazda Engine SKYACTIV-G 2.5. Manual - part 25

TECHNICAL DATA 

01-50–1

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01-50

TECHNICAL DATA

ENGINE TECHNICAL DATA . . . . . . . . . .  01-50–1

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WM: ENGINE

ENGINE TECHNICAL DATA

id015000800100

Item

Specification

OCV coil resistance

6.9—7.5 ohms [20°C {68°F}]

Maximum distortion, head gasket side of the cylinder 

head

0.05 mm {0.002 in}

Maximum distortion, manifold side

IN: 0.10 mm {0.0039 in}

EX: 0.05 mm {0.002 in}

Maximum cutting length, manifold side

IN: Cutting not authorized

EX: 0.20 mm {0.0079 in}

Standard valve seat contact width

1.37—1.84 mm {0.0540—0.0724 in}

Valve seat angle

45°

Standard valve seat sinkage amount (Dimension L)

IN: 48.93—50.17 mm {1.927—1.975 in}

EX: 48.87—50.11 mm {1.925—1.972 in}

Standard valve head margin thickness

IN: 1.75—1.95 mm {0.0689—0.0767 in}

EX: 1.95—2.15 mm {0.0768—0.0846 in}

Standard valve length

IN: 107.00—107.60 mm {4.2127—4.2362 in}

EX: 117.09—117.69 mm {4.6099—4.6334 in}

Minimum valve length

IN: 106.78 mm {4.2039 in}

EX: 116.87 mm {4.6012 in}.

Standard valve stem diameter

IN: 5.470—5.485 mm {0.2154—0.2159 in}

EX: 5.465—5.480 mm {0.2152—0.2157 in}

Minimum valve stem diameter

IN: 5.424 mm {0.2135 in}

EX: 5.419 mm {0.2133 in}

Standard valve guide inner diameter

IN: 5.510—5.530 mm {0.2170—0.2177 in}

EX: 5.510—5.530 mm {0.2170—0.2177 in}

Standard clearance between valve stem and guide

IN: 0.025—0.060 mm {0.0010—0.0023 in}

EX: 0.030—0.065 mm {0.0012—0.0025 in}

Maximum clearance between valve stem and guide

0.10 mm {0.0039 in}

Standard valve guide projection height

IN: 16.4—17.0 mm {0.646—0.669 in}

EX: 16.4—17.0 mm {0.646—0.669 in}

Valve spring installation height

When pressurized with spring force of 228—252 N {23.3—25.6 kgf, 

51.3—56.6 lbf}, spring height is 38.0 mm {1.50 in}

Maximum valve spring off-square

IN: 2.0 ° (1.7 mm {0.067 in})

EX: 2.0 ° (1.7 mm {0.067 in})

Maximum camshaft runout

0.030 mm {0.0012 in}

Standard cam height

IN: 42.34 mm {1.667 in}

EX: 40.37 mm {1.589 in}

Minimum cam height

IN: 42.27 mm {1.664 in}

EX: 40.30 mm {1.587 in}

Standard camshaft journal diameter

24.96—24.98 mm {0.9827—0.9834 in}

Minimum camshaft journal diameter

24.93 mm {0.9815 in}

Standard camshaft journal oil clearance

0.035—0.080 mm {0.0014—0.0031 in}

Maximum camshaft journal oil clearance

0.090 mm {0.0035 in}

Standard camshaft end play

0.07—0.22 mm {0.003—0.008 in}

Maximum camshaft end play

0.23 mm {0.0091 in}

Maximum distortion, head gasket side of the cylinder 

block

0.10 mm {0.0039 in}

Standard cylinder bore diameter

89.000—89.030 mm {3.5040—3.5051 in}

Oil jet valve opening pressure

180—220 kPa {1.84—2.24 kgf/cm

2

, 26.2—31.9 psi}

Standard piston outer diameter

88.965—88.995 mm {3.5026—3.5037 in}

Standard clearance between piston and cylinder

0.025—0.045 mm {0.0010—0.0017 in}

Maximum clearance between piston and cylinder

0.066 mm {0.0026 in}

TECHNICAL DATA 

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End Of Sie

Standard clearance between piston ring and ring 

groove

Top: 0.04—0.08 mm {0.002—0.003 in}

Second: 0.03—0.07 mm {0.0012—0.0027 in}

Oil: 0.04—0.12 mm {0.002—0.004 in}

Maximum clearance between piston ring and ring 

groove

Top: 0.12 mm {0.0047 in}

Second: 0.10 mm {0.0039 in}

Oil: 0.17 mm {0.0067 in}

Standard piston ring end gap

Top: 0.13—0.18 mm {0.0052—0.0070 in}

Second: 0.18—0.28 mm {0.008—0.011 in}

Oil (Rail): 0.10—0.35 mm {0.004—0.013 in}

Maximum piston ring end gap

Top: 0.35 mm {0.014 in}

Second: 0.45 mm {0.018 in}

Oil (Rail): 0.52 mm {0.020 in}

Standard piston pin outer diameter

20.995—21.000 mm {0.82658—0.82677 in}

Standard piston pin hole diameter

21.004—21.008 mm {0.82693—0.82708 in}

Standard clearance between piston pin hole diameter 

and piston pin outer diameter

0.004—0.013 mm {0.0002—0.0005 in}

Standard connecting rod small end inner diameter

21.002—21.013 mm {0.82686—0.82728 in}

Standard clearance between connecting rod small end 

inner diameter and piston pin outer diameter

0.002—0.018 mm {0.00008—0.00070 in}

Maximum connecting rod bending

0.050 mm {0.0020 in}

Maximum connecting rod distortion

0.050 mm {0.0020 in}

Connecting rod center-to-center distance

154.8 mm {6.094 in}

Standard side clearance at the large end of 

connecting rod

0.14—0.36 mm {0.006—0.014 in}

Maximum side clearance at the large end of 

connecting rod

0.465 mm {0.0183 in}

Standard bearing oil clearance at the large end of the 

connecting rod

0.026—0.052 mm {0.0011—0.0020 in}

Maximum bearing oil clearance at the large end of the 

connecting rod

0.10 mm {0.0039 in}

Connecting rod bearing size

STD: 1.502—1.519 mm {0.05914—0.05980 in}

OS 0.25: 1.628—1.631 mm {0.06410—0.06421 in}

OS 0.50: 1.753—1.756 mm {0.06902—0.06913 in}

Standard crankshaft end play

0.08—0.29 mm {0.004—0.011 in}

Maximum crankshaft end play

0.30 mm {0.012 in}

Thrust bearing size

STD: 2.500—2.550 mm {0.0985—0.1003 in}

OS 0.25: 2.625—2.675 mm {0.1034—0.1053 in}

Maximum main journal runout

0.10 mm {0.0039 in}

Standard main journal diameter

49.980—50.000 mm {1.9678—1.9685 in}

Maximum main journal off-round

0.005 mm {0.0002 in}

Standard crank pin diameter

49.980—50.000 mm {1.9678—1.9685 in}

Maximum crank pin off-round

0.005 mm {0.0002 in}

Standard main journal oil clearance

0.016—0.039 mm {0.0007—0.0015 in}

Maximum main journal oil clearance

0.084 mm {0.0033 in}

Main bearing size

STD: 2.489—2.510 mm {0.0980—0.0988 in}

OS 0.25: 2.614—2.617 mm {0.10292—0.10303 in}

OS 0.50: 2.739—2.742 mm {0.10784—0.10795 in}

Dual-mass flywheel guide pin projection maximum 

amount

11.0—12.0 mm {0.434—0.472 in}

Dual-mass flywheel maximum runout

1.5 mm {0.059 in}

Standard cylinder head bolt length

145.2—145.8 mm {5.717—5.740 in}

Maximum cylinder head bolt length

146.5 mm {5.768 in}

Standard connecting rod bolt length

43.7—44.3 mm {1.73—1.74 in}

Maximum connecting rod bolt length

 45.0 mm {1.77 in}

Rear oil seal press on amount

0—0.5 mm {0—0.019 in}

Front oil seal press on amount

0—0.5 mm {0—0.019 in}

Item

Specification

SERVICE TOOLS 

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01-60

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SERVICE TOOLS

ENGINE SST . . . . . . . . . . . . . . . . . . . . . .  01-60–1

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SOKYU_WM: ENGINE

ENGINE SST

id016000119200

1: Mazda SST number

2: Global SST number

Example

End Of Sie

1: 49 E011 1A0

2: –

Ring gear brake 

set

1: 49 L010 1A0

2: –

Engine hanger 

set

1: 49 0107 

680A

2: –

Engine stand

1: 49 E011 1A0

2: –

Ring gear brake 

set

1: 49 0636 

100B

2: –

Valve spring 

lifter arm

1: 49 B012 

0A2A

2: –

Pivot

1: 49 S120 170

2: –

Valve seal 

remover

1: 49 S120 710

2: –

Coupling flange 

holder

1: 49 G033 102

2: –

Handle

1: 49 1285 071

2: –

Bearing puller

1: 49 B012 015

2: –

Valve guide 

installer

1: 49 S033 101

2: –

Dust cover 

installer

1: 49 B012 016

2: –

Attachment

1: 49 G028 205

2: –

Oil seal installer

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