Suzuki: Engine K6A-YH6. Service manual - part 3

 

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Suzuki: Engine K6A-YH6. Service manual - part 3

 

 

2-4

SPECIFICATIONS AND GENERAL INFORMATION

2

Engine Information

Item

Unit

Specification

Type

K6A Normally Aspirated

Number of Cylinders and 
Arrangement

In-line 3-Cylinder Transversely Mounted

Combustion Chamber Shape

Pent-Roof Type

Valve Mechanism

Twin Cam, 4-Valve, Chain Driven

Engine Displacement

cu in. (cc)

40 (658)

Bore x Stroke

in. (mm)

2.68 x 2.38 (68.0 x 60.4)

Compression Ratio

10.5

Cylinder Identification

1-2-3 from Timing Chain toward Flywheel

Firing Order

1-3-2

Maximum Output @ Engine Speed

hp/rpm

44 at 5000 (net)

Maximum Torque @ Engine Speed

lb-ft/rpm

45.7 at 4000 (net)

SPECIFICATIONS AND GENERAL INFORMATION

2-5

2

Standard Torque Values

Inch Fastener Torque Values

Metric Fastener Torque Values

NOTICE

NOTE

Jacobsen uses Grade 5 plated bolts as standard, unless 
otherwise noted. When tightening plated bolts, use the 
value given for lubricated.

All torque values included in these charts are 
approximate and are for reference only. Use of 
these torque values is at your sole risk. Jacobsen 
is not responsible for any loss, claim, or damage 
arising from the use of these charts. 

Extreme caution should always be used when 
using any torque value.

AMERICAN NATIONAL STANDARD FASTENERS

SIZE

UNITS

GRADE 5

GRADE 8

SIZE

UNITS

GRADE 5

GRADE 8

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

#6-32

in-lb (Nm)

20 (2.3)

7/16-14

ft-lb (Nm)

37 (50.1)

50 (67.8)

53 (71.8)

70 (94.9)

#8-32

in-lb (Nm)

24 (2.7)

30 (3.4)

7/16-20

ft-lb (Nm)

42 (56.9)

55 (74.6)

59 (80.0)

78 (105)

#10-24

in-lb (Nm)

35 (4.0)

45 (5.1)

1/2-13

ft-lb (Nm)

57 (77.2)

75 (101)

80 (108)

107 (145)

#10-32

in-lb (Nm)

40 (4.5)

50 (5.7)

1/2-20

ft-lb (Nm)

64 (86.7)

85 (115)

90 (122)

120 (162)

#12-24

in-lb (Nm)

50 (5.7)

65 (7.3)

9/16-12

ft-lb (Nm)

82 (111)

109 (148)

115 (156)

154 (209)

1/4-20

in-lb (Nm)

75 (8.4)

100 (11.3)

107 (12.1)

143 (16.1)

9/16-18

ft-lb (Nm)

92 (124)

122 (165)

129 (174)

172 (233)

1/4-28

in-lb (Nm)

85 (9.6)

115 (13.0)

120 (13.5)

163 (18.4)

5/8-11

ft-lb (Nm)

113 (153)

151 (204)

159 (215)

211 (286)

5/16-18

in-lb (Nm)

157 (17.7)

210 (23.7)

220 (24.8)

305 (34.4)

5/8-18

ft-lb (Nm)

128 (173)

170 (230)

180 (244)

240 (325)

5/16-24

in-lb (Nm)

173 (19.5)

230 (26.0)

245 (27.6)

325 (36.7)

3/4-10

ft-lb (Nm)

200 (271)

266 (360)

282 (382)

376 (509)

3/8-16

ft-lb (Nm)

23 (31.1)

31 (42.0)

32 (43.3)

44 (59.6)

3/4-16

ft-lb (Nm)

223 (302)

298 404

315 (427)

420 (569)

3/8-24

ft-lb (Nm)

26 (35.2)

35 (47.4)

37 (50.1)

50 (67.8)

7/8-14

ft-lb (Nm)

355 (481)

473 (641)

500 (678)

668 (905)

METRIC FASTENERS

SIZE

UNITS

Non-Critical

Fasteners

into

Aluminum

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

M4

Nm (in-lb)

3.83 (34)

5.11 (45)

2.0 (18)

M5

Nm (in-lb)

1.80 (16)

2.40 (21)

4.63 (41)

6.18 (54)

6.63 (59)

8.84 (78)

7.75 (68)

10.3 (910

4.0 (35)

M6

Nm (in-lb)

3.05 (27)

4.07 (36)

7.87 (69)

10.5 (93)

11.3 (102)

15.0 (133)

13.2 (117)

17.6 (156)

6.8 (60)

M8

Nm (in-lb)

7.41 (65)

9.98 (88)

19.1 (69)

25.5 (226)

27.3 (241)

36.5 (323)

32.0 (283)

42.6 (377)

17.0 (150)

M10

Nm (ft-lb)

14.7 (11)

19.6 (14)

37.8 (29)

50.5 (37)

54.1 (40)

72.2 (53)

63.3 (46)

84.4 (62)

33.9 (25)

M12

Nm (ft-lb)

25.6 (19)

34.1 (25)

66.0 (48)

88.0 (65)

94.5 (70)

125 (92)

110 (81)

147 (108)

61.0 (45)

M14

Nm (ft-lb)

40.8 (30)

54.3 (40)

105 (77)

140 (103)

150 (110)

200 (147)

175 (129)

234 (172)

94.9 (70)

4.6

8.8

10.9

12.9

2-6

SPECIFICATIONS AND GENERAL INFORMATION

2

2.2 Air Intake and Exhaust 
System Specifications

2.3 Electrical Specifications

2.4 Fuel System Specifications

2.5 Cooling System 
Specifications

Item

Unit

Specification

Intake Manifold Torque

lb-in. (N•m)

97 (11)

Exhaust Manifold Torque

lb-in. (N•m)

204 (23)

Intake Manifold Distortion Limit

in. (mm)

0.003 (0.07)

Exhaust Manifold Distortion Limit

in. (mm)

0.003 (0.07)

Intake Manifold Vacuum at Idle

psi (kpa)

7.7 (53)

Item

Unit

Specification

Spark Plug (NGK)

Jacobsen PN 4119606

Spark Plug (Denso)

Jacobsen PN 2701832

Spark Plug Gap

in. (mm)

0.031—0.035 (0.8—0.9)

Spark Plug Torque

lb-in. (N•m)

177 (20)

Firing order

1-3-2

Ignition Timing 

deg. / rpm

5 ± 1 / 800

ISC Duty Ratio

%

5—30

O

2

 Sensor Feedback Duty Ratio

%

5—95

Belt Deflection at Mid-Point with
17 ft-lb (23 N•m) of Force Applied

Alternator Belt Deflection—New

in. (mm)

0.315—0.354 (8—9)

Alternator Belt Deflection 
Readjustment

in. (mm)

0.472—0.59 (12—15)

Item

Unit

Specification

Fuel Pressure

psi (kPa)

43 (294)

Item

Unit

Specification

Thermostat Start-to-Open 

°F (°C)

190 (88)

Thermostat Full Open

°F (°C)

205 (96)

SPECIFICATIONS AND GENERAL INFORMATION

2-7

2

2.6 Front Cover, Timing Chain, 
and Tensioner Specifications

2.7 Cylinder Head, Cams, and 
Valve Train Specifications

Item

Unit

Specification

Front Cover Torque

lb-in. (N•m)

97 (11)

Item

Unit

Specification

Valve Clearance, Cold, Intake

in. (mm)

0.007—0.009 (0.18—0.23)

Valve Clearance, Cold, Exhaust

in. (mm)

0.012—0.014 (0.30—0.35)

Intake and Exhaust Manifold Mating 
Face Distortion Limit

in. (mm)

0.000—0.002 (0.00—0.05)

Camshaft Housing Cap Screw 
Torque

lb-in. (N•m)

97 (11)

Camshaft Journal Outside Diameter

in. (mm)

0.903—0.904 (22.934—22.955)

Camshaft Journal Inside Diameter

in. (mm)

0.905—0.906 (23.000—23.021)

Camshaft Lobe Height, Intake

in. (mm)

1.477—1.483 (37.520—37.680)

Camshaft Lobe Height, Exhaust

in. (mm)

1.470—1.476 (37.343—37.503)

Cylinder Head/Block Mating Face 
Distortion Limit

in. (mm)

0.001 (0.03)

Camshaft Oil Clearance Standard

in. (mm)

0.002—0.003 (0.045—0.087)

Camshaft Oil Clearance Limit

in. (mm)

0.004 (0.10)

Valve Spring Tension Standard at 
1.17 in. (29.9 mm)

lb-ft (N•m)

22—26 (100—116)

Valve Spring Tension Limit at 
1.17 in. (29.9 mm)

lb-ft (N•m)

20 (88)

Valve Guide to Valve Stem 
Clearance, Intake

in. (mm)

0.0007—0.0018 (0.020—0.047)

Valve Guide to Valve Stem 
Clearance Limit, Intake

in. (mm)

0.002 (0.07)

Valve Guide to Valve Stem 
Clearance, Exhaust

in. (mm)

0.0017—0.0028 (0.045—0.072)

Valve Guide to Valve Stem 
Clearance Limit, Exhaust

in. (mm)

0.003 (0.09)

Tappet and Bore Clearance

in. (mm)

0.0009—0.0024 (0.025—0.062)

Tappet and Bore Clearance Limit

in. (mm)

0.003 (0.10)

Valve Spring Free Length

in. (mm)

1.35 (34.3)

Valve Spring Right Angle Range

in. (mm)

0.000—0.059 (0.00—1.5)

Cam Cover Cap Screw Torque

lb-in. (N•m)

96 (11)

Cylinder Head Cap Screw Torque

lb-ft (N•m)

43.5 (59)

 

 

 

 

 

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