[kycarguy 935]

found this info but will do more checking on a value.
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911 Turbo 3.3 - with increased engine output

Vehicle Type 911 Turbo 3.3 - with increased engine output
Engine Type Type M 30/69 S
Model Year '92 (N)
General As of Model Year '92 (N), the 3.3 Turbo was made available with an engine with increased output under the Exclusive Special Option No. "X 33".
As the specifications of this engine have so far not been published, we herewith provide you with a brief description of this engine.
Description 3.3 litre Turbo engine "X 33" with increased output
Engine Type M 30/69 S
Displacement 3299 c.c. (3.3 I)
Output 261 kW (355 HP)
Torque 471 Nm (48 kpm) at 5,000 rpm

Scope of modifications

* Cylinder head, inlet and exhaust ports modified
* Inlet manifold modified
* modified camshafts
* Valve timing (setting) 0.9 - 1.1.

Modified Parts
Part no. Part designation Quantity
930.105.147.50 Camshaft, left-hand 1
930.105.148.50 Camshaft, right-hand 1
911.105.171.02 Spacer flange, left-hand 1
911.105.172.02 Spacer flange, right-hand 1
900.067.082.02 Bolt 4
N 010.183.1 Bolt 1*
930.113.025.03 Gearwheels 1
N 013.349.1 Roll pin 2
930.100.908.03 Gasket set 1
930.104.043.14 Cylinder head 6

Note: The parts indicated - without the * symbol - are only available from the Porsche AG - Kundenzentrum (Stuttgart-Zuffenhausen)!
Phone 0711-827 5290/5488/5602, Telefax 0711-827 6227, Telex 7252 5141
Engine Type M 30/69S With catalytic converter
No. of cylinders 6
Bore 97 mm
Stoke 74.4 mm
Displacement to 88/76/EEC 3299 c.c.
Compression ratio 7.0:1
Engine power to 80/1269/EEC 261 kW (355 HP)
At crankshaft speed 5,000 rpm
Output per liter 79.1 kW/l (107.6 HP/l)
Minimum fuel octance rating RON 95/MON 85 (unleaded Premium to DIN 51 607 only)
Fuel consumption (litres/100 km)
(to 80/1268/EEC or ECE A 70)
at 90 km/h 8.5
at 120 km/h 10.4
city driving cycle 21.0
Engine oil consumption up to 1.5 L/1000 km
Max. permissible engine rpm 6,800 + 100 rpm
Spark plugs Bosch WR 4 DPO
Plug gap 0.6 + 0.1 mm
Battery 12 V, 72 Ah
Generator Alternator, 1610 W / 115 A
Firing order 1-6, 2-4, 3-5
Ignition Electronic-map ignition system.
Caution: High voltage! Working on the ignition system and rev counter may be hazardous
Fan drive belt 9.5 x 776 La Use only genuine fan belts approved by Porsche
Drive belt for A/C compressor/alternator Polyrib 14 11 K6
Valve clearance (engine cold) Inlet and exhaust valves: 0.10 mm
Performance figures *
Max speed 280 km/h
Acceleration 0 - 100 km/h 4.7 seconds
Kilometer with standing start 22.7
* At DIN curb weight and half-laden vehicle without performance-reducing special equipment
Tire pressure - 911 Turbo S
(valid for cold tires)
Summer tires Winter tires
- front 2.5 bar gauge (36 psi) - front 2.5 bar gauge (36 psi)
- front 3.0 bar gauge (44 psi) - front 3.0 bar gauge (44 psi)