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Section: Mechanical

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Engine Mechanical (service Specifications) Lexus IS F I

Mechanical

SERVICE DATA

Ignition timing	Terminal TC and CG of DLC3 connected			8 to 12° BTDC at idle
Ignition timing	Terminals TC and CG of DLC3 disconnected			8 to 18° BTDC at idle
Idle speed				700 to 800 rpm
Compression	Standard			1400 kPa (14.0 kgf/cm 2 , 203 psi) or more
	Minimum			980 kPa (10.0 kgf/cm 2 , 142 psi)
	Difference			100 kPa (1.0 kgf/cm 2 , 14.5 psi) or less
Valve clearance at cold			Intake	0.12 to 0.18 mm (0.00472 to 0.00709 in.)
Valve clearance at cold			Exhaust	0.22 to 0.28 mm (0.00866 to 0.0110 in.)
Exhaust manifold	Warpage		Maximum	0.5 mm (0.0197 in.)
Timing chain	No. 1 chain	Chain elongation	Maximum	136.9 mm (5.39 in.)
	No. 2 chain	Chain elongation	Maximum	137.6 mm (5.42 in.)
	Crankshaft timing gear	Sprocket diameter (w/ chain)	Minimum	61.4 mm (2.42 in.)
	Crankshaft timing sprocket LH	Sprocket diameter (w/ chain)	Minimum	61.4 mm (2.42 in.)
	No. 2 chain tensioner	Depth	Maximum	0.9 mm (0.0354 in.)
	No. 3 chain tensioner			0.9 mm (0.0354 in.)
	Chain tensioner slipper			1.0 mm (0.0394 in.)
	No. 1 chain vibration damper			1.0 mm (0.0394 in.)
Camshaft timing gear	Keyway width		Standard	5.9 to 6.2 mm (0.232 to 0.244 in.)
Camshaft timing gear	Keyway width		Maximum	6.7 mm (0.264 in.)
Camshaft	Circle runout		Maximum	0.04 mm (0.00157 in.)
	Cam lobe height	Intake	Standard	44.953 to 45.103 mm (1.7698 to 1.7757 in.)
		Intake	Minimum	44.903 mm (1.7678 in.)
		Exhaust	Standard	44.576 to 44.726 mm (1.7549 to 1.7609 in.)
		Exhaust	Minimum	44.526 mm (1.7530 in.)
	Journal diameter	No. 1 journal	Standard	29.956 to 29.970 mm (1.1794 to 1.1799 in.)
	Journal diameter	Other journal	Standard	25.959 to 25.975 mm (1.0220 to 1.0226 in.)
	Oil clearance	No. 1 journal	Standard	0.030 to 0.069 mm (0.00118 to 0.00272 in.)
		No. 1 journal	Maximum	0.09 mm (0.00354 in.)
		Other journal	Standard	0.025 to 0.062 mm (0.000984 to 0.00244 in.)
		Other journal	Maximum	0.09 mm (0.00354 in.)
Cylinder head	Warpage	Cylinder head lower side	Standard	0.05 mm (0.00197 in.)
		Intake side		0.08 mm (0.00315 in.)
		Exhaust side		0.05 mm (0.00197 in.)
			Maximum	0.10 mm (0.00394 in.)
	Intake valve	Valve stem diameter	Standard	5.470 to 5.485 mm (0.215 to 0.216 in.)
		Margin thickness	Standard	1.25 mm (0.0492 in.)
		Margin thickness	Minimum	0.50 mm (0.0197 in.)
		Overall length	Standard	105.85 mm (4.17 in.)
		Overall length	Minimum	105.35 mm (4.15 in.)
		Width	Standard	1.1 to 1.5 mm (0.0433 to 0.0591 in.)
	Exhaust	Valve stem diameter	Standard	5.465 to 5.480 mm (0.215 to 0.216 in.)
		Margin thickness	Standard	1.4 mm (0.0551 in.)
		Margin thickness	Minimum	0.50 mm (0.0197 in.)
		Overall length	Standard	110.40 mm (4.35 in.)
		Overall length	Minimum	109.90 mm (4.33 in.)
		Width	Standard	1.3 to 1.7 mm (0.0512 to 0.0669 in.)
	Compression spring (Intake side)	Free length	Standard	47.86 mm (1.88 in.)
		Deviation	Maximum	1.0 mm (0.0394 in.)
		Angle (reference)	Maximum	2°
	Compression spring (Exhaust side)	Free length	Standard	47.24 mm (1.86 in.)
		Deviation	Maximum	1.0 mm (0.0394 in.)
		Angle (reference)	Maximum	2°
	Valve guide bush	Bush inside diameter	Standard	5.51 to 5.53 mm (0.217 to 0.218 in.)
	Valve guide bush oil clearance	Intake	Standard	0.025 to 0.060 mm (0.000984 to 0.00236 in.)
		Intake	Maximum	0.08 mm (0.00315 in.)
		Exhaust	Standard	0.030 to 0.065 mm (0.00118 to 0.00256 in.)
		Exhaust	Maximum	0.10 mm (0.00394 in.)
	Camshaft thrust clearance		Standard	0.08 to 0.14 mm (0.00315 to 0.00551 in.)
	Camshaft thrust clearance		Maximum	0.15 mm (0.00591 in.)
	Cylinder bore diameter		Standard	10.285 to 10.306 mm (0.405 to 0.406 in.)
	Valve guide bush bore diameter		STD	10.285 to 10.306 mm (0.405 to 0.406 in.)
	Valve guide bush bore diameter		O/S 0.05	10.335 to 10.356 mm (0.407 to 0.408 in.)
	Protrusion height		Standard	14.3 to 14.7 mm (0.563 to 0.579 in.)
Cylinder block	Warpage		Maximum	0.05 mm (0.00197 in.)
	Cylinder bore		Standard	94.000 to 94.012 mm (3.7008 to 3.7013 in.)
	Cylinder bore		Maximum	94.200 mm (3.7087 in.)
Connecting rod	Thrust clearance		Standard	0.15 to 0.55 mm (0.00591 to 0.0217 in.)
	Thrust clearance		Maximum	0.70 mm (0.0276 in.)
	Oil clearance		Standard	0.037 to 0.062 mm (0.00146 to 0.00244 in.)
	Oil clearance		Maximum	0.080 mm (0.00315 in.)
Connecting rod	Standard sized bearing	Center wall thickness	Mark 2	1.483 to 1.486 mm (0.0584 to 0.0585 in.)
			Mark 3	1.486 to 1.489 mm (0.0585 to 0.0586 in.)
			Mark 4	1.489 to 1.492 mm (0.0586 to 0.0587 in.)
			Mark 5	1.492 to 1.495 mm (0.0587 to 0.0589 in.)
			Mark 6	1.495 to 1.498 mm (0.0589 to 0.0590 in.)
			Mark 7	1.498 to 1.501 mm (0.0590 to 0.0591 in.)
	Big end	Inside diameter	Mark 1	56.000 to 56.006 mm (2.2047 to 2.2050 in.)
			Mark 2	56.007 to 56.012 mm (2.2050 to 2.2052 in.)
			Mark 3	56.013 to 56.018 mm (2.2052 to 2.2054 in.)
			Mark 4	56.019 to 56.024 mm (2.2055 to 2.2057 in.)
Crankshaft	Crankshaft pin	Diameter	Mark 1	52.995 to 53.000 mm (2.0864 to 2.0866 in.)
			Mark 2	52.989 to 52.994 mm (2.0862 to 2.0864 in.)
			Mark 3	52.982 to 52.998 mm (2.0859 to 2.0861 in.)
	Thrust clearance		Standard	0.020 to 0.220 mm (0.000787 to 0.00866 in.)
	Thrust clearance		Maximum	0.30 mm (0.0118 in.)
	Thrust washer thickness		Standard	2.44 to 2.49 mm (0.0961 to 0.0980 in.)
Piston	Diameter		Standard	93.980 to 93.990 mm (3.7000 to 3.7004 in.)
	Diameter		Minimum	93.830 mm (3.6941 in.)
	Oil clearance		Standard	0.010 to 0.032 mm (0.000394 to 0.00126 in.)
	Oil clearance		Maximum	0.370 mm (0.0146 in.)
Piston ring	Groove clearance		No. 1	0.020 to 0.070 mm (0.000787 to 0.00276 in.)
			No. 2	0.020 to 0.060 mm (0.000787 to 0.00236 in.)
			Oil	0.020 to 0.070 mm (0.000787 to 0.00276 in.)
	End gap	Standard	No. 1	0.23 to 0.33 mm (0.00906 to 0.0130 in.)
			No. 2	0.35 to 0.45 mm (0.0138 to 0.0177 in.)
			Oil	0.10 to 0.40 mm (0.00394 to 0.0157 in.)
		Maximum	No. 1	0.40 mm (0.0157 in.)
			No. 2	0.50 mm (0.0197 in.)
			Oil	0.45 mm (0.0177 in.)
Piston pin	Hole inside diameter		Mark A	21.998 to 22.001 mm (0.86606 to 0.86618 in.)
			Mark B	22.002 to 22.004 mm (0.86622 to 0.86629 in.)
			Mark C	22.005 to 22.007 mm (0.86634 to 0.86642 in.)
	Diameter		Mark A	21.997 to 22.000 mm (0.86602 to 0.86614 in.)
			Mark B	22.001 to 22.003 mm (0.86618 to 0.86626 in.)
			Mark C	22.004 to 22.006 mm (0.86629 to 0.86638 in.)
	Oil clearance		Standard	0.002 to 0.004 mm (-0.0000787 to 0.000158 in.)
	Oil clearance		Maximum	0.015 mm (0.000591 in.)
Connecting rod bush	Inside diameter		Mark A	22.005 to 22.008 mm (0.86634 to 0.86646 in.)
			Mark B	22.009 to 22.011 mm (0.86649 to 0.86657 in.)
			Mark C	22.012 to 22.014 mm (0.86661 to 0.86669 in.)
	Oil clearance		Standard	0.005 to 0.011 mm (0.000197 to 0.000433 in.)
	Oil clearance		Maximum	0.03 mm (0.00118 in.)
Connecting rod	Bend		Maximum	0.05 mm (0.00197 in.) per 100 mm (3.94 in.)
Connecting rod	Twist		Maximum	0.15 mm (0.00591 in.) per 100 mm (3.94 in.)
Connecting rod bolt	Diameter		Standard	8.5 to 8.6 mm (0.335 to 0.339 in.)
Connecting rod bolt	Diameter		Minimum	8.3 mm (0.327 in.)
Crankshaft	Circle runout		Maximum	0.01 mm (0.000394 in.)
	Main journal	Diameter	Standard	66.988 to 67.000 mm (2.63731 to 2.63779 in.)
	Crank pin	Diameter	Standard	52.982 to 53.000 mm (2.08590 to 2.08661 in.)
	Oil clearance	No. 1 and No. 5 journal	Standard	0.017 to 0.030 mm (0.000669 to 0.00118 in.)
		No. 1 and No. 5 journal	Maximum	0.050 mm (0.00197 in.)
		Other journal	Standard	0.024 to 0.037 mm (0.000945 to 0.00146 in.)
		Other journal	Maximum	0.060 mm (0.00236 in.)
	Main journal diameter		Mark 00	66.999 to 67.000 mm (2.63775 to 2.63779 in.)
			Mark 01	66.998 to 66.999 mm (2.63771 to 2.63775 in.)
			Mark 02	66.997 to 66.998 mm (2.63767 to 2.63771 in.)
			Mark 03	66.996 to 66.997 mm (2.63763 to 2.63767 in.)
			Mark 04	66.995 to 66.996 mm (2.63759 to 2.63763 in.)
			Mark 05	66.994 to 66.995 mm (2.63755 to 2.63759 in.)
			Mark 06	66.993 to 66.994 mm (2.63751 to 2.63755 in.)
			Mark 07	66.992 to 66.993 mm (2.63748 to 2.63751 in.)
			Mark 08	66.991 to 66.992 mm (2.63744 to 2.63748 in.)
			Mark 09	66.990 to 66.991 mm (2.63740 to 2.63744 in.)
			Mark 10	66.989 to 66.990 mm (2.63736 to 2.63740 in.)
			Mark 11	66.988 to 66.989 mm (2.63732 to 2.63736 in.)
Bearing center wall thickness No. 1 and No. 5 journal	Upper bearing	00 to 02	4	2.501 to 2.504 (0.0985 to 0.0986 in.)
		03 to 05	5	2.504 to 2.507 (0.0986 to 0.0987 in.)
		06 to 08	5	2.504 to 2.507 (0.0986 to 0.0987 in.)
		09 to 11	6	2.507 to 2.510 (0.0987 to 0.0988 in.)
		12 to 14	6	2.507 to 2.510 (0.0987 to 0.0988 in.)
		15 to 17	7	2.510 to 2.513 (0.0988 to 0.0989 in.)
		18 to 20	7	2.510 to 2.513 (0.0988 to 0.0989 in.)
		21 to 23	8	2.513 to 2.516 (0.0989 to 0.0991 in.)
		24 to 26	8	2.513 to 2.516 (0.0989 to 0.0991 in.)
		27 to 28	9	2.516 to 2.519 (0.0991 to 0.0992 in.)
	Lower bearing	00 to 02	5	2.488 to 2.491 (0.0980 to 0.0981 in.)
		03 to 05	5	2.488 to 2.491 (0.0980 to 0.0981 in.)
		06 to 08	6	2.491 to 2.494 (0.0981 to 0.0982 in.)
		09 to 11	6	2.491 to 2.494 (0.0981 to 0.0982 in.)
		12 to 14	7	2.494 to 2.497 (0.0982 to 0.0983 in.)
		15 to 17	7	2.494 to 2.497 (0.0982 to 0.0983 in.)
		18 to 20	8	2.497 to 2.500 (0.0983 to 0.0984 in.)
		21 to 23	8	2.497 to 2.500 (0.0983 to 0.0984 in.)
		24 to 26	9	2.500 to 2.503 (0.0984 to 0.0985 in.)
		27 to 28	9	2.500 to 2.503 (0.0984 to 0.0985 in.)
Bearing center wall thickness other journal	Upper bearing	00 to 02	3	2.482 to 2.485 (0.0977 to 0.0978 in.)
		03 to 05	4	2.485 to 2.488 (0.0978 to 0.0980 in.)
		06 to 08	4	2.485 to 2.488 (0.0978 to 0.0980 in.)
		09 to 11	5	2.488 to 2.491 (0.0980 to 0.0981 in.)
		12 to 14	5	2.488 to 2.491 (0.0980 to 0.0981 in.)
		15 to 17	6	2.491 to 2.494 (0.0981 to 0.0982 in.)
		18 to 20	6	2.491 to 2.494 (0.0981 to 0.0982 in.)
		21 to 23	7	2.494 to 2.497 (0.0982 to 0.0983 in.)
		24 to 26	7	2.494 to 2.497 (0.0982 to 0.0983 in.)
		27 to 28	8	2.497 to 2.500 (0.0983 to 0.0984 in.)
	Lower bearing	00 to 02	4	2.501 to 2.504 (0.0985 to 0.0986 in.)
		03 to 05	4	2.501 to 2.504 (0.0985 to 0.0986 in.)
		06 to 08	5	2.504 to 2.507 (0.0986 to 0.0987 in.)
		09 to 11	5	2.504 to 2.507 (0.0986 to 0.0987 in.)
		12 to 14	6	2.507 to 2.510 (0.0987 to 0.0988 in.)
		15 to 17	6	2.507 to 2.510 (0.0987 to 0.0988 in.)
		18 to 20	7	2.510 to 2.513 (0.0988 to 0.0989 in.)
		21 to 23	7	2.510 to 2.513 (0.0988 to 0.0989 in.)
		24 to 26	8	2.513 to 2.516 (0.0989 to 0.0991 in.)
		27 to 28	8	2.513 to 2.516 (0.0989 to 0.0991 in.)
Crankshaft bearing cap set bolt	Diameter	Bolt A	Standard	10.8 to 11.0 mm (0.425 to 0.433 in.)
		Bolt A	Minimum	10.7 mm (0.421 in.)
		Bolt B	Standard	9.8 to 10.0 mm (0.386 to 0.394 in.)
		Bolt B	Minimum	9.7 mm (0.382 in.)
Crankshaft bearing	Bearing cap's edge and the lower bearing's edge		Dimension A - B or B - A	0 to 0.7 mm (0 to 0.0276 in.)
Connecting rod bearing	Connecting rod's and bearing cap's edges		Dimension A - B or B - A	0 to 0.7 mm (0 to 0.0276 in.)
Cylinder head set bolt	Outside diameter		Standard	10.85 to 11.00 mm (0.427 to 0.433 in.)
Cylinder head set bolt	Outside diameter		Minimum	10.6 mm (0.417 in.)
No. 1 ventilation connector	Acceptable angle			5° to 5°
No. 1 ventilation connector	Tap-in depth			0.2 to 3.2 mm (0.00787 to 0.126 in.)

TORQUE SPECIFICATIONS

Part tightened		N*m	Kgf*cm	Ft.*lbf
Radiator reserve tank assembly x Radiator assembly		5.0	51	44 in.*lbf
Camshaft housing sub-assembly x Cylinder head	1st	10	102	7
Camshaft housing sub-assembly x Cylinder head	2nd	24	245	18
Camshaft bearing cap x Camshaft housing sub-assembly	1st	10	102	7
Camshaft bearing cap x Camshaft housing sub-assembly	2nd	19	190	14
Cylinder head x Cylinder block	1st	36	367	27
	2nd	Turn 90°	Turn 90°	Turn 90°
	3rd	Turn 90°	Turn 90°	Turn 90°
	For 12 mm head	21	214	15
Cylinder head stud bolt	For stud bolt A,B,C,D	9.0	92	80 in.*lbf
Cylinder head stud bolt	For bolt E	5.0	51	44 in.*lbf
No. 2 straight screw plug x Cylinder head		80	815	59
No. 1 straight screw plug x Cylinder head		44	448	32
Connecting rod x Connecting rod cap	1st	40	408	30
Connecting rod x Connecting rod cap	2nd	Turn 90°	Turn 90°	Turn 90°
Crankshaft bearing cap x Cylinder block	For Inside position	61	622	45
	For Outside position	27	275	20
	2nd	Turn 90°	Turn 90°	Turn 90°
	For Cylinder block side position	45	459	33
Cylinder block stud bolt	For Stud bolt A	10	102	7
Cylinder block stud bolt	For Stud bolt B	9.0	92	80 in.*lbf
No. 1 oil nozzle x Cylinder block		10	102	7
Crankshaft pulley x Crankshaft		330	3365	243
Front engine mounting insulator x Front suspension crossmember		70	714	52
Front engine mounting insulator x Front No. 1 engine mounting bracket		35	357	26
Drive plate and ring gear sub-assembly x Crankshaft	1st	30	301	22
Drive plate and ring gear sub-assembly x Crankshaft	2nd	Turn 90°	Turn 90°	Turn 90°
Rear engine mounting member x rear engine mounting insulator		13	133	10
Cooler compressor x Cylinder block	For Bolt, nut	25	255	18
Cooler compressor x Cylinder block	For Stud bolt	10	102	7
Oil cooler tube x Cylinder block	For Bolt	14	140	10
Oil cooler tube x Cylinder block	For Nut	5.5	56	49 in.*lbf
Front suspension crossmember x Body	For Bolt A	204	2080	150
	For Bolt B	50	510	37
	For Bolt C	49	500	36
	Nut	167	1703	123
Engine rear mounting member x Body		26	260	19
Ground cable x Automatic transmission		10	102	7
Power steering wire harness wire harness x Power steering link assembly		8.0	82	71 in.*lbf
Ground cable x Timing chain cover		21	214	15
Ground cable x Fuel pump register		8.0	82	71 in.*lbf
Wire harness x No. 1 engine room relay block		12	122	9
Positive (+) battery terminal x Cable		13	130	9
Air cleaner case sub-assembly x Body		5.0	51	44 in.*lbf
No. 1 air cleaner inlet x Body		5.0	51	44 in.*lbf
Engine under cover air guide bracket x Body		26	265	19
Oil pan stud bolt		5.0	51	44 in.*lbf
Oil drain pipe sub-assembly x Cylinder block		10	102	7
Engine rear oil seal retainer x Cylinder block		10	102	7
Oil strainer sub-assembly x Oil pan sub-assembly		21	214	15
No. 1 oil pan baffle plate x Oil pan sub-assembly		10	102	7
Oil pan sub-assembly x cylinder block	For Bolt A	35	357	26
	For Bolt B	10	102	7
	For Nut	35	357	26
No. 2 oil pan sub-assembly x Oil pan sub-assembly		10	102	7
Heat exchanger sub-assembly x Cylinder block		21	214	15
Valve rocker arm pivot x cylinder head		23	235	17
Oil reflector plate LH x cylinder head		10	102	7
Oil reflector plate RH x cylinder head		10	102	7
No. 2 chain tensioner assembly x Cylinder head		10	102	7
No. 1 chain vibration damper x Cylinder block		21	214	15
No. 1 chain tensioner assembly x Cylinder head		10	102	7
No. 3 chain tensioner assembly x Cylinder head		10	102	7
Camshaft timing gear assembly x Camshaft		79	806	58
Camshaft timing exhaust gear assembly x Camshaft		100	1020	74
Cylinder head cover spacer x Cylinder head cove sub-assembly		10	102	7
Cylinder head cover sub-assembly x Cylinder head	For Bolt A	21	214	15
Cylinder head cover sub-assembly x Cylinder head	For Except bolt	12	122	9
Front water by-pass joint x Cylinder head		21	214	15
Camshaft timing control motor assembly x Timing chain cover sub-assembly		21	214	15
Oil filter bracket x Timing chain cover sub-assembly		21	214	15
Oil filter bracket stay x Timing chain cover sub-assembly		21	214	15
Oil cooler sub-assembly x Oil filter bracket	For Bolt	10	102	7
Oil cooler sub-assembly x Oil filter bracket	For Union bolt	59	602	43
Cylinder block water drain cock sub-assembly x Cylinder block		30	306	22
Drain cock plug x Cylinder water drain cock sub-assembly		13	132	10
Camshaft timing oil control valve assembly x Cylinder head cover sub-assembly		10	102	7
Crankshaft position sensor x Oil pan sub-assembly		10	102	7
Camshaft position sensor x Cylinder head cover sub-assembly		10	102	7
VVT sensor x Cylinder head cover sub-assembly		10	102	7
Oil filler cap housing x Cylinder head cover sub-assembly		10	102	7
No. 4 V-bank cover bracket sub-assembly x Cylinder head cover sub-assembly		10	102	7
No. 3 V-bank cover bracket sub-assembly x Cylinder head cover sub-assembly		10	102	7
No. 1 V-bank cover bracket x Cylinder head cover sub-assembly		10	102	7
Oil pressure switch assembly x Oil filter bracket		15	153	11
No. 2 water by-pass pipe sub-assembly x Timing chain cover sub-assembly		10	102	7
Inlet water housing x Timing chain cover		21	214	15
No. 2 idler pulley sub-assembly x Timing chain cover sub-assembly		43	439	32
No. 5 engine wire x Cylinder head		10	102	7
Wire harness clamp bracket x Cylinder block	LH side	21	214	15
Wire harness clamp bracket x Cylinder block	RH side	29	296	21
Front No. 1 engine mounting bracket LH x Cylinder block		35	357	26
Front No. 1 engine mounting bracket RH x Cylinder block		35	357	26
Engine mounting damper x Front No. 1 engine mounting bracket		11	112	8
Engine hanger x Cylinder head		43	438	32