TL78 Turbocharger's Technical Data
Technical data for Model TL78 by Garrett | ||||
---|---|---|---|---|
Tolerances | ||||
Part | Inches | Millimeters | ||
Min. | Max. | Min. | Max. | |
Compressor wheel | ||||
Bore diameter | 0,3121 | 0,3124 | 7,9270 | 7,9350 |
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 | ||||
Part | Inches | 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 | ||||
Part | Pounds 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 |
4th - Plus additional turn of 135º-145º | ||||
V clamp | ||||
compressor housing | 110,0 | 130,0 | 12,4 | 14,7 |
turbine housing | 110,0 | 130,0 | 12,4 | 14,7 |