SPECIFICATION
| Engine | Model | Saab 9-2X - 2.5L Linear | ||
|---|---|---|---|---|
| Cylinder arrangement | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |||
| Valve system mechanism | Belt driven, single overhead camshaft, 4-valve/cylinder | |||
| Bore x Stroke | Mm (in) | 99.5 x 79.0 (3.917 x 3.110) | ||
| Displacement | Cm 3 (cu in) | 2,457 (150) | ||
| Compression ratio | 10.0 | |||
| Compression pressure (at 350 RPM) | KPa (kg/cm 2 , psi) | 1,020 - 1,275 (10.4 - 13.0, 148 - 185) | ||
| Number of piston rings | Pressure ring: 2, Oil ring: 1 | |||
| Intake valve timing | Open | BTDC 2° | ||
| Close | ABDC 56° | |||
| Exhaust valve timing | Open | BBDC 40° | ||
| Close | ATDC 8° | |||
| Valve clearance | Mm (in) | Intake | 0.20+/-0.04 (0.0079+/-0.0016) | |
| Exhaust | 0.25+/-0.04 (0.0098+/-0.0016) | |||
| Idle speed [at neutral position on MT, or "P" or "N" range on AT] | RPM | 650+/-100 (No load) 850+/-100 (A/C ON) | ||
| Ignition order | 1 ? 3 ? 2 ? 4 | |||
| Ignition timing | BTDC/RPM | MT | 10°+/-8°/650 | |
| AT | 15°+/-8°/700 | |||
TECHNICAL DATA SPECIFICATION
Note. US: undersize OS: oversize
| Belt tension adjuster | Protrusion of adjuster rod | Mm (in) | 5.2 - 6.2 (0.205 - 0.244) | ||
|---|---|---|---|---|---|
| Belt tensioner | Spacer O.D. | Mm (in) | 17.955 - 17.975 (0.7069 - 0.7077) | ||
| Tensioner bushing I.D. | Mm (in) | 18.00 - 18.08 (0.7087 - 0.7118) | |||
| Clearance between spacer and bushing | Mm (in) | Standard | 0.025 - 0.125 (0.0010 - 0.0049) | ||
| Side clearance of spacer | Mm (in) | Standard | 0.20 - 0.55 (0.0079 - 0.0217) | ||
| Valve rocker arm | Clearance between shaft and arm | Mm (in) | Standard | 0.020 - 0.054 (0.0008 - 0.0021) | |
| Camshaft | Bend limit | Mm (in) | 0.025 (0.0010) | ||
| Side clearance | Mm (in) | Standard | 0.030 - 0.090 (0.0012 - 0.0035) | ||
| Cam lobe height | Mm (in) | Intake | Standard | 39.485 - 39.585 (1.5545 - 1.5585) | |
| Exhaust | Standard | 39.720 - 39.820 (1.5491 - 1.5530) | |||
| Camshaft journal O.D. | Mm (in) | 31.928 - 31.945 (1.2570 - 1.2577) | |||
| Camshaft journal hole I.D. | Mm (in) | 32.000 - 32.018 (1.2598 - 1.2605) | |||
| Oil clearance | Mm (in) | Standard | 0.055 - 0.090 (0.0022 - 0.0035) | ||
| Cylinder Head | Surface warpage limit (mating with cylinder block) | Mm (in) | 0.03 (0.001) | ||
| Grinding limit | Mm (in) | 0.1 (0.004) | |||
| Standard height | Mm (in) | 97.5 (3.84) | |||
| Valve seat | Refacing angle | 90° | |||
| Contacting width | Mm (in) | Intake | Standard | 0.8 - 1.4 (0.03 - 0.055) | |
| Exhaust | Standard | 1.2 - 1.8 (0.047 - 0.071) | |||
| Valve guide | Inside diameter | Mm (in) | 6.000 - 6.012 (0.2362 - 0.2367) | ||
| Protrusion above head | Mm (in) | Intake | 20.0 - 21.0 (0.787 - 0.827) | ||
| Exhaust | 16.5 - 17.5 (0.650 - 0.689) | ||||
| Valve | Head edge thickness | Mm (in) | Intake | Standard | 0.8 - 1.2 (0.03 - 0.047) |
| Exhaust | Standard | 1.0 - 1.4 (0.039 - 0.055) | |||
| Stem outer diameters | Mm (in) | Intake | 5.950 - 5.965 (0.2343 - 0.2348) | ||
| Exhaust | 5.945 - 5.960 (0.2341 - 0.2346) | ||||
| Valve stem gap | Mm (in) | Standard | Intake | 0.035 - 0.062 (0.0014 - 0.0024) | |
| Exhaust | 0.040 - 0.067 (0.0016 - 0.0026) | ||||
| Overall length | Mm (in) | Intake | 120.6 (4.75) | ||
| Exhaust | 121.7 (4.79) | ||||
| Valve springs | Free length | Mm (in) | 54.30 (2.1378) | ||
| Squareness | 2.5°, 2.4 mm (0.094 in) or less | ||||
| Tension/spring height | N (kgf, lb)/mm (in) | Set | 214 - 246 (22 - 25, 48 - 55)/ 45.0 (1.772) | ||
| Lift | 526 - 582 (54 - 59, 119 - 130)/ 34.7 (1.366) | ||||
| Cylinder block | Surface warpage limit (mating with cylinder head) | Mm (in) | 0.025 (0.00098) | ||
| Grinding limit | Mm (in) | 0.1 (0.004) | |||
| Standard height | Mm (in) | 201.0 (7.91) | |||
| Cylinder inner diameter | Mm (in) | Standard | A | 99.505 - 99.515 (3.9175 - 3.9179) | |
| B | 99.495 - 99.505 (3.9171 - 3.9175) | ||||
| Taper | Mm (in) | Standard | 0.015 (0.0006) | ||
| Out-of-roundness | Mm (in) | Standard | 0.010 (0.0004) | ||
| Piston clearance | Mm (in) | Standard | 0.010 - 0.010 (- 0.00039 - 0.00039) | ||
| Boring limit | Mm (in) | 0.5 (0.020) | |||
| Piston | Outer diameter | Mm (in) | Standard | A | 99.505 - 99.515 (3.9175 - 3.9179) |
| B | 99.495 - 99.505 (3.9171 - 3.9175) | ||||
| 0.25 (0.0098) OS | 99.745 - 99.765 (3.9270 - 3.9278) | ||||
| 0.50 (0.0197) OS | 99.995 - 100.015 (3.9368 - 3.9376) | ||||
| Piston pin standard diameter | Mm (in) | 23.000 - 23.006 (0.9055 - 0.9057) | |||
| Piston pin | Outer diameter | Mm (in) | 22.994 - 23.000 (0.9053 - 0.9055) | ||
| Standard clearance between piston and piston pin | Mm (in) | 0.004 - 0.008 (0.0002 - 0.0003) | |||
| Degree of fit | Piston pin must be fitted into position with thumb at 20°C (68° F). | ||||
| Piston Ring | Ring closed gap | Mm (in) | Top ring | Standard | 0.20 - 0.35 (0.0079 - 0.0138) |
| Second ring | Standard | 0.37 - 0.52 (0.0144 - 0.0203) | |||
| Oil ring | Standard | 0.20 - 0.50 (0.0079 - 0.0197) | |||
| Ring groove gap | Mm (in) | Top ring | Standard | 0.040 - 0.080 (0.0016 - 0.0031) | |
| Second ring | Standard | 0.030 - 0.070 (0.0012 - 0.0028) | |||
| Connecting Rod | Bend twist per 100 mm (3.94 in) in length | Mm (in) | Limit | 0.10 (0.0039) | |
| Side clearance of large end | Mm (in) | Standard | 0.070 - 0.330 (0.0028 - 0.0130) | ||
| Bearing of large end | Oil clearance | Mm (in) | Standard | 0.016 - 0.044 (0.00063 - 0.0017) | |
| Bearing size (Thickness at center) | Mm (in) | Standard | 1.492 - 1.501 (0.0587 - 0.0591) | ||
| 0.03 (0.0012) US | 1.510 - 1.513 (0.0594 - 0.0596) | ||||
| 0.05 (0.0020) US | 1.520 - 1.523 (0.0598 - 0.0600) | ||||
| 0.25 (0.0098) US | 1.620 - 1.623 (0.0638 - 0.0639) | ||||
| Bush of small end | Clearance between piston pin and bushing | Mm (in) | Standard | 0 - 0.022 (0 - 0.0009) | |
| Crankshaft | Bend limit | Mm (in) | 0.035 (0.0014) | ||
| Crank pin | Out-of-roundness | Mm (in) | 0.003 (0.0001) | ||
| Cylindrically | Mm (in) | 0.004 (0.0002) | |||
| Grinding limit (dia.) | Mm (in) | To 51.750 (2.0374) | |||
| Crank journal | Out-of-round | Mm (in) | 0.005 (0.0002) | ||
| Cylindrically | Mm (in) | 0.006 (0.0002) | |||
| Grinding limit (dia.) | Mm (in) | To 59.750 (2.3524) | |||
| Crank pin outer diameter | Mm (in) | Standard | 51.984 - 52.000 (2.0466 - 2.0472) | ||
| 0.03 (0.0012) US | 51.954 - 51.970 (2.0454 - 2.0461) | ||||
| 0.05 (0.0020) US | 51.934 - 51.950 (2.0446 - 2.0453) | ||||
| 0.25 (0.0098) US | 51.734 - 51.750 (2.0368 - 2.0374) | ||||
| Crank journal outer diameter | Mm (in) | Standard | 59.992 - 60.008 (2.3619 - 2.3625) | ||
| 0.03 (0.0012) US | 59.962 - 59.978 (2.3607 - 2.3613) | ||||
| 0.05 (0.0020) US | 59.942 - 59.958 (2.3599 - 2.3605) | ||||
| 0.25 (0.0098) US | 59.742 - 59.758 (2.3520 - 2.3527) | ||||
| Side clearance | Mm (in) | Standard | 0.030 - 0.115 (0.0012 - 0.0045) | ||
| Oil clearance | Mm (in) | Standard | 0.010 - 0.030 (0.0001 - 0.0012) | ||
| Main bearing | Main bearing mm (in) | #1, #3 | Standard | 1.998 - 2.011 (0.0787 - 0.0792) | |
| 0.03 (0.0012) US | 2.017 - 2.020 (0.0794 - 0.0795) | ||||
| 0.05 (0.0020) US | 2.027 - 2.030 (0.0798 - 0.0799) | ||||
| 0.25 (0.0098) US | 2.127 - 2.130 (0.0837 - 0.0839) | ||||
| #2, #4, #5 | Standard | 2.000 - 2.013 (0.0787 - 0.0793) | |||
| 0.03 (0.0012) US | 2.019 - 2.022 (0.0795 - 0.0796) | ||||
| 0.05 (0.0020) US | 2.029 - 2.032 (0.0799 - 0.0800) | ||||
| 0.25 (0.0098) US | 2.129 - 2.132 (0.0838 - 0.0839) | ||||
BELT TENSION ADJUSTER CHART