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.)
Valve 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.)
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.)

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.)

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 Standard 0.03 mm (0.0012 in.)
Maximum 0.04 mm (0.0016 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.)