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TL81 Turbocharger's Technical Data


Technical data for Model TL81 by Garrett

Tolerances
PartInches Millimeters
Min.Max.Min. Max.
Compressor wheel
Bore diameter 0,3736 0,3739 9,4890 9,4970
Back plate
Piston ring bore diameter 0,6875 0,6885 17,4630 17,4880
Oil seal ring gap 0,0030 0,0080 0,0700 0,2000
Bearing housing
Piston ring bore diameter 0,8220 0,8240 20,8800 20,9300
Bearing bore diameter 0,9827 0,9832 24,9610 24,9730
Oil seal ring gap 0,0080 0,0150 0,2000 0,3800
Shaft and wheel
Piston ring groove width 0,0645 0,0685 1,6380 1,7400
Journal diameter 0,6250 0,6254 15,8750 15,8850
Piston ring groove diameter 0,6880 0,6920 17,4800 17,5800
Seal hub diameter 0,7950 0,7970 20,1900 20,2400
Eccentricity of small diameter 0,0000 0,0005 0,0000 0,0130
Thrusth spacer
Piston ring groove width 0,0685 0,0695 1,7400 1,7650
Diameter (I.D.) 0,3755 0,3758 9,5380 9,5450
Piston ring groove diameter 0,6040 0,6080 15,3400 15,4400
Diameter (O.D.) 0,6715 0,6725 17,0560 17,0820
Thickness 0,5160 0,5170 13,1100 13,1300
Parallelism between faces 0,0001 0,0030
Thrusth collar
Diameter (I.D.) 0,3755 0,3759 9,5350 9,5450
0,2990 0,3000 7,5900 7,6200
Parallelism between faces 0,0003 0,0080
Clearances
PartInches Millimeters
Min.Max.Min. Max.
Rotor
Axial end play 0,0030 0,0100 0,0800 0,2500
Radial bearing clearance 0,0030 0,0070 0,0800 0,1800
Torques
PartPounds per Inch Newtons per meter
Min.Max.Min. Max.
Bolts
backplate 80,0 100,0 9,0 11,3
Shaft nut
1st - Tighten to 125,0 150,0 14,1 17,0
2nd - Loosen the nut
3rd - Retorque to 35,0 55,0 4,0 6,2
V clamp
compressor housing 110,0 130,0 12,4 14,7
turbine housing 110,0 130,0 12,4 14,7

 


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