Tire conditiontire pressure

Tires represent safety elements which can only meet the requirements made of them if inflation pressure is correct and if tread depth is sufficient. The inflation pressures quoted here are minimum pressures. Lower pressures must on no account be used, since they not only diminish handling quality but may also lead to serious tire damage. Valve caps protect the valve from dust and dirt, and therefore also from leaks. Always tighten caps properly and replace missing caps. For safety reasons, a...

Survey of tires and wheelstire specification codes

The survey of tires and wheels for summer and winter is contained in the Technical Information bulletins (Tl), Group 4. When replacing summer tires the tire specification number must be observed. The specification codes NO, N1, and N2 distinguish summer tires specially approved by Porsche from other versions of the same tire type and tire size. The approved tires are also contained in the relevant Tl. NO, N1 and N2 tires, even of the same make, must not be used simultaneously on one and the...

Engine data 928 S4928GT

KW l(HP l) 47.4 (63.7) 49.0 (65.8) Technical data type 928 S4 engine type M 28.42 8-cyl. 4-stroke spark-ignition V-engine 2-piece light-alloy crankcase, without cy 2 overhead camshafts per bank of cylin 3-way catalytic converters, 2-pipe sys tem in center muffler and rear muffler 3-way catalytic converters and second

Transmission number codes as of Model

Transmission Index for variants Serial number 2 ZF limited slip differential (M 220) 3 controlled limited slip differential (PSD) Caution The transmission nos. 1 2000 of each type are reserved for testing. The first serial number is 2001. Transmission G 28 57 manufactured as of model year 1992 as the 46th standard transmission (with controlled limited slip differential PSD).

Collapsible spare tire

Front and rear only permitted at front 2.5 bar overpressure 3.0 bar overpressure 2.5 bar overpressure 2.5 bar overpressure 2.5 bar overpressure 2.2 bar overpressure 2.5 bar overpressure 3.0 bar overpressure 2.5 bar overpressure 3.0 bar overpressure wit8 PR 89 P 92 P tires with 4 PR 83 P tires For V and ZR tires, amended standards and regulations require tire pressures which deviate from those given in the Driver's Manual. The new tire inflation pressures quoted above must now be used....

Piston weight tolerances

Pistons and piston pins are paired in accordance with weight selection. Pistons are weighed with their pertinent parts piston pins, piston rings, snap rings . Piston pins must always remain assigned to the corresponding piston and must not be interchanged even within one engine set. Observe allocation during disassembly and assembly of engine, and mark if necessary. If piston pins have been interchanged by mistake, reallocation must be carried out by checking the total weights. Identification...

To convert tightening torques from kpm into Nm the conversion factor 10 can be used This is sufficient for workshop

1990 928 S4 Europe, RoW A M28 42 4957 235 320 78.9 100 10.0 1 928 GT Europe, RoW M28 47 4957 243 330 78.9 100 10.0 1 928 S4 USA, Canada AM28 42 4957 235 320 78.9 100 10.0 1 928 GT USA, Canada M28 47 4957 243 330 78.9 100 10.0 1 1991 92 S4 Europe, RoW A 10.0 1 1992 928 GTS Europe, RoW M28 49 5397 257 350 85.9 100 10.4 1 928 GTS Europe, RoW AM28 50 5397 257 350 85.9 100 10.4 1 1993 928 GTS USA, Canada M28 49 5397 257 350 85.9 100 10.4 1 928 GTS USA, Canada AM28 50 5397 257 350 85.9 100 10.4 1 928...