Drive Pinion
Due to the new Porsche synchromesh system without retaining rings, care must be taken to ensure that a clearance of 0.4 0.6 mm distance Z is correctly set between the shoulder face of the input shaft and the guide sleeve for the 4th and 5th gear. 1. Measure distance ,,Z between input shaft and guide sleeve. Don't measure the distance synchromesh ring guide sleeve or clutch unit guide sleeve. 2. If distance ,,Z 0.4 to 0.6 mm is not reached, disassemble pinion ring gear again and correct by...
Electrical Connection Diagram
1 - Control unit 6 - Supply relay 9 - Ignition coils 10-Ignition starting A - Ground control unit Valve cover right beneath blow-off switch over valve B - Ground output stages In vicinity of ignition coil right - forward direction C - Actuation LH-Jetronic D-to LH-Jetronic
Torque Specifications for Mechanical Brake System
Brake line to master brake cylinder, brake hoses, brake pressure regulator, T-distributor and hydraulic unit Brake hose to floating frame caliper Hexagon nut bleed screw to brake caliper Master brake cylinder to vacuum booster Stoplight switch to master brake cylinder Brake pressure regulator to wheel well Screw-in regulator to master brake cylinder or hydraulic unit Hydraulic unit bracket to wheel well Hydraulic unit to hydraulic unit bracket Housing floating caliper to bracket Refer to...
Installed Lenght and Colour Code of Valve Springs
Intake valve 38.5 0.5 mm Exhaust valve 37.5 0.5 mm Check installed length with special tool 9138 and correct by installing or removing shims if necessary. from 3.81 colour code -1 white line - Intake valve 41.5 0.5 mm Exhaust valve 40.5 0.5 mm From engine number codes 8210516 M 28 11 and 8215503 M 28 12 automatic, sets of valve springs are used with progressive outer springs on both ends formerly only at one end . The valve spring seat has been enlarged in the cylinder head. The new cylinder...
Tolerances and Wear Limits Engine
When Installed Wear New Limits Compression 8 bar and 6.5 bar Mahle Groove 1 0.06 0.102 Groove2 0.04 0.072 Groove3 0.013 0.023 0.127 0.137 Conrod bushing piston pin radial play Groove 1 0.20 0.40 Groove 2 0.20 0.40 Groove 3 0.40 1.40 Crankshaft runout 0.04 Max. 0.06 measured on 2nd, 3rd or 4th bearing, bearings 1 and 5 on v-blocks Conrod bearing journal dia. 51.971 51.990 Conrod bearing crankshaft radial play 0.034 0.092 Crankshaft bearing journal dia. 69.971 69.990 crankshaft radial play 0.020...
Technical Data Type 928 Engine Data Model 8182
Displacement actual Compression ratio Max. engine power, DIN 70020 Net power, SAE J 245 At engine speed Max. torque, DIN 70020 Net torque, SAE J 245 At engine speed Max. liter output, DIN 70020 SAE J 245 Speed governed by ignition cut-off at Engine weight dry Camshaft drive Cylinder head Arrangement of valves Valve timing 95.0 3.74 78.9 3.11 4474 272.97 10 1 USA 9.0 1 177 240 170 231 171 229 165 220 5250 5500 380 38.7 360 36.7 368 271 348 265 3600 4000 40 54 38 52 38 51 37 49 8 cylinder, four...
Survey of Type Designations
M 28.11 4664 221 300 5900 78.9 97 1983 928 S Europe, R.o.W. M 28.12 4664 221 300 5900 78.9 97 928 S USA M 28.19 4664 178 242 5250 78.9 97 928 S USA Automatic M 28.20 4664 178 242 5250 78.9 97 928 S Japan M 28.19 4664 178 242 5250 78.9 97 __928 S Japan Automatic M 28.20 4664 178 242 5250 78.9 97 1983 1984 928 S Europe, R.o.W. M 28.21 4664 228 310 5900 78.9 97 1984 928 S Europe, R.o.W. M 28.22 4664 228 310 5900 78.9 97 928 S USA M 28.19 4664 1 78 242 5250 78.9 97...
Rims and Tires
SR version up to max. speed of 160 km h mtinnai HR version up to max. speed of 190 km h I opilonai SR version up to max. speed of 160 km h mtinnai HR version up to max. speed of 190 km h I opilonai New tire designation only M S tires for speed classes and max. load capacity Signifying 88 max. load capacity 560 kg Q max. speed 160 km h 89 max. load capacity 580 kg T max. speed 190 km h Tires with higher load capacity can also be used.
Ignition System Equipment Table 928 Model 8182 Ignition Coil
With two series resistors 0.4 Ohm and 0.6 Ohm Centrifugal and vacuum advance mechanism Distributor rotor with speed limiter at 6200 rpm 150 rpm Centrifugal and vacuum advance and retard mechanism Distributor rotor without speed limiter Centrifugal and vacuum advance and retard mechanism Distributor rotor without speed limiter Centrifugal and vacuum retard mechanism Distributor rotor with speed limiter at 6200 rpm 150 rpm Bosch W8D W145T 30 Beru 14-8 D 145 14 3 A with two series resistors 0.4...
Checking Drive Belt Tightness
Check tightness by applying thumb pressure on belt at point midway between two pulleys. Location Tightening Method Tightening Torque Thread Location Tightening Method Tightening Torque Thread B, Leave cylinder head gasket preloaded for 30 min. in this condition. C. Final tightening loosen hexagon nuts by 1 4 turn one after the other and tighten. 85 8.5 Other tightening methods for changed cylinder head gasket Part number 928.104.361.02, Cylinder 1 - 4 Part ntimber 928.104.362.02, Cylinder 5-8...
Adjusting Drive Pinion Manual Transmission
R- Design distance 70.70 mm r - Deviation from R in 1 100 mm 2 - Pair number code 3-Backlash Adjusting and Calculating Procedures 1. Install drive pinion without shims S3 and tighten bearing cover to specified torque. 2. Determine deviation at pinion head with the master gauge set to E R r . 3. Use the deviation shown on the dial gauge for thickness of shim S3. Install shims S3. 4. Recheck adjustment. Dial gauge reading must not deviate from the original adjustment by more than 0.03 mm....
