1KR-FE ENGINE MECHANICAL > SERVICE DATA



Engine
Ignition timing
8 to 15°BTDC
Idle speed
650 to 800 rpm
Compression
Standard
1,422 kPa (14.5 kgf/cm2, 206 psi)
Minimum
1,079 kPa (11.0 kgf/cm2, 156 psi)
Difference between each cylinder
147 kPa (1.5 kgf/cm2, 21 psi)
CO concentration
0.2 % or less
HC concentration
70 ppm or less
Fan and generator V belt deflection
Specified Point: Directly between the pulleys
New belt
8 to 10.5 mm (0.315 to 0.413 in.)
Used belt
11 to 14 mm (0.433 to 0.551 in.)
Specified Point: 55 mm (2.165 in.) left of the center of the generator pulley
New belt
4.5 to 6.0 mm (0.177 to 0.236 in.)
Used belt
6.5 to 7.5 mm (0.256 to 0.295 in.)
No. 1 (cooler compressor to crankshaft pulley) belt deflection

New belt
8.0 to 10 mm (0.315 to 0.394 in.)

Used belt
11 to 14 mm (0.433 to 0.551 in.)
Valve clearance
(Cold)

Intake
0.145 to 0.235 mm (0.00571 to 0.00925 in.)

Exhaust
0.275 to 0.365 mm (0.01083 to 0.01437 in.)
Cylinder head sub-assembly
Warpage

Maximum
0.05 mm (0.0020 in.)
Connecting rod
Thrust clearance

Standard
0.1 to 0.3 mm (0.004 to 0.012 in.)

Maximum
0.36 mm (0.0138 in.)
Oil clearance

Standard
0.010 to 0.036 mm (0.00039 to 0.00142 in.)

Maximum
0.036 mm (0.00142 in.)
Main journal diameter

Standard
43.988 to 44.000 mm (1.73181 to 1.73228 in.)

Maximum
0.03 mm (0.0012 in.)
Timing chain guide
Wear

Maximum
0.5 mm (0.020 in.)
Timing chain tension arm
Wear

Maximum
0.5 mm (0.020 in.)
Camshaft
Circle runout

Maximum
0.03 mm (0.0012 in.)
Cam lobe height

Standard
Intake: 41.54 to 41.64 mm (1.6354 to 1.6394 in.)
Exhaust: 40.97 to 41.07 mm (1.6130 to 1.6169 in.)

Minimum
Intake: 41.44 mm (1.6315 in.)
Exhaust: 40.87 mm (1.6091 in.)
Thrust clearance

Standard
0.100 to 0.225 mm (0.00394 to 0.00886 in.)

Maximum
0.240 mm (0.00944 in.)
No. 1 camshaft bearing
Oil clearance

Standard
Intake: 0.025 to 0.061 mm (0.00098 to 0.00240 in.)
Exhaust: 0.037 to 0.073 mm (0.00146 to 0.00287 in.)

Maximum
Intake: 0.09 mm (0.00354 in.)
Exhaust: 0.10 mm (0.00393 in.)
No. 2 camshaft bearing
Oil clearance

Standard
Intake: 0.035 to 0.072 mm (0.00138 to 0.00283 in.)
Exhaust: 0.035 to 0.072 mm (0.00138 to 0.00283 in.)

Maximum
Intake: 0.10 mm (0.00393 in.)
Exhaust: 0.10 mm (0.00393 in.)
Inner compression spring
Deviation

Maximum
1.5 mm (0.059 in.)
Free length
51.63 mm (2.0327 in.)
Valve
Overall length

Standard
Intake: 88.39 mm (3.4799 in.)
Exhaust: 89.11 mm (3.5083 in.)
Stem end diameter
3.9 to 4.5 mm (0.154 to 0.177 in.)
Margin thickness

Standard
Intake: 1.05 to 1.45 mm (0.413 to 0.0571 in.)
Exhaust: 1.10 to 1.50 mm (0.0433 to 0.0591 in.)

Minimum
Intake: 0.7 mm (0.028 in.)
Exhaust: 0.7 mm (0.028 in.)
Diameter

Standard
Intake: 27.35 to 27.65 mm (1.0768 to 1.0886 in.)
Exhaust: 23.45 to 23.75 mm (0.9232 to 0.9350 in.)
Stem diameter

Standard
Intake: 4.970 to 4.985 mm (0.19567 to 0.19626 in.)
Exhaust: 4.965 to 4.980 mm (0.19547 to 0.19606 in.)
Valve seat
Width

Standard
Intake: 1.20 to 1.70 mm (0.0472 to 0.0669 in.)
Exhaust: 1.11 to 1.61 mm (0.0437 to 0.0634 in.)
Valve guide bushing
Inside diameter

Standard
5.01 to 5.03 mm (0.19724 to 0.19803 in.)
Oil clearance

Standard
Intake: 0.025 to 0.060 mm (0.00098 to 0.00236 in.)
Exhaust: 0.030 to 0.065 mm (0.00118 to 0.00256 in.)

Maximum
Intake: 0.008 mm (0.00315 in.)
Exhaust: 0.10 mm (0.00394 in.)
Cylinder head bolt
Length

Maximum
123.5 mm (4.862 in.)
Cylinder block
Warpage

Maximum
0.05 mm (0.0020 in.)
Cylinder bore
Diameter

Standard
71.000 to 71.013 mm (2.79527 to 2.79578 in.))

Maximum
71.133 mm (2.80051 in.)

Maximum elliptic degree and tapered amount
0.02 mm (0.0008 in.)
Piston
Diameter

Standard
70.945 to 70.963 mm (2.79311 to 2.79381 in.)

Minimum
70.945 mm (2.79311 in.)
Oil clearance

Standard
0.037 to 0.068 mm (0.00146 to 0.00268 in.)

Maximum
0.098 mm (0.00386 in.)
Ring groove clearance

Standard
No. 1 ring: 0.02 to 0.07 mm (0.0008 to 0.0028 in.)
No. 2 ring: 0.02 to 0.06 mm (0.0008 to 0.0024 in.)
Oil ring: 0.020 to 0.065 mm (0.00079 to 0.00256 in.)

Maximum
No. 1 ring: 0.07 mm (0.0028 in.)
No. 2 ring: 0.06 mm (0.0024 in.)
Oil ring: 0.065 mm (0.00256 in.)
Piston ring
End gap

Standard
No. 1 ring: 0.15 to 0.35 mm (0.0059 to 0.0098 in.)
No. 2 ring: 0.40 to 0.60 mm (0.0157 to 0.0236 in.)
Oil ring: 0.10 to 0.40 mm (0.0039 to 0.0157 in.)

Maximum
No. 1 ring: 0.25 mm (0.0098 in.)
No. 2ring: 0.60 mm (0.0236 in.)
Oil ring: 0.40 mm (0.0158 in.)
Crankshaft thrust washer
Thickness

Standard
1.94 to 1.99 mm (0.0764 to 0.783 in.)
Connecting rod bolt
Diameter

Minimum
6.4 mm (0.252 in.)
Connecting rod bearing
Wear

Standard
1.492 to 1.501 mm (0.05874 to 0.0.05909 in.)
Crankshaft
Circle runout

Maximum
0.03 mm (0.0012 in.)
Main journal diameter

Standard
43.988 to 44.000 mm (1.73181 to 1.73228 in.)

Maximum elliptic degree and tapered amount
0.03 mm (0.0012 in.)
Crankshaft pin diameter

Standard
39.992 to 40.000 mm (1.57449 to 1.57480 in.)

Maximum elliptic degree and tapered amount
0.03 mm (0.0012 in.)
Thrust clearance

Standard
0.02 to 0.04 mm (0.008 to 0.0016 in.)

Maximum
0.30 mm (0.0118 in.)