07:55:32 - Mon, May 25, 2026 -
10°C
10°CT18 Turbocharger's Technical Data
Technical data for Model T18 by Garrett | ||||
|---|---|---|---|---|
| Tolerances | ||||
| Part | Inches | 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 | 0,9885 | 17,4630 | 17,4880 |
| Oil seal ring gap | 0,0030 | 0,0080 | 0,0700 | 0,2000 |
| Bearing housing | ||||
| Piston ring bore diameter | 1,0290 | 1,0310 | 26,1400 | 26,1900 |
| Bearing bore diameter | 0,9830 | 0,9835 | 24,9680 | 24,9810 |
| Oil seal ring gap | 0,0080 | 0,0150 | 0,2000 | 0,3800 |
| Shaft and wheel | ||||
| Piston ring groove width | 0,0645 | 0,0665 | 1,6380 | 1,6890 |
| Journal diameter ( all others ) | 0,6250 | 0,6254 | 15,8750 | 15,8850 |
| Journal diameter (T1815,78) | 0,6247 | 0,6250 | 15,8670 | 15,8750 |
| Seal hud diameter | 0,9950 | 0,9970 | 25,2700 | 25,3200 |
| Eccentricity of small diameter | 0,0005 | 0,0130 | ||
| Thrusth spacer | ||||
| Piston ring groove width | 0,0695 | 0,0715 | 1,7650 | 1,8160 |
| Diameter (I.D.) | 0,3754 | 0,3758 | 9,5350 | 9,5450 |
| Piston ring bore diameter | 0,6040 | 0,6080 | 15,3400 | 15,4400 |
| Diameter (O.D.) | 0,6715 | 0,6725 | 17,2470 | 17,2590 |
| Thickness | 0,4860 | 0,4870 | 12,3400 | 12,3700 |
| Parallelism between faces | 0,0002 | 0,0050 | ||
| Thrusth collar | ||||
| Diameter (I.D.) | 0,3755 | 0,3759 | 9,5350 | 9,5450 |
| Thickness | 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 | 0,0040 | 0,0090 | 0,1000 | 0,2300 |
| Radial bearing clearance | 0,0040 | 0,0090 | 0,1000 | 0,2300 |
| Torques | ||||
| Part | Pounds per Inch | Newtons per meter | ||
| Min. | Max. | Min. | Max. | |
| Bolts | ||||
| compressor housing | 100,0 | 110,0 | 11,3 | 12,4 |
| turbine housing | 100,0 | 110,0 | 11,3 | 12,4 |
| insert plate | 30,0 | 40,0 | 3,4 | 4,5 |
| Shaft nut | ||||
| 1st - Tighten to | 125,0 | 150,0 | 14,1 | 17,0 |
| 2nd - Loosen the nut | ||||
| 3rd - Retorque to | 15,0 | 25,0 | 1,7 | 2,8 |
| 4th - Plus additional turn of 130º | ||||