I have the 04' US dealer brochure and it is correctly listed as 320 hp, not 315 hp.

 

Wow, that is a lot of crap. It sounds like it would be 10k to upgrade, might as well go with a Supercharger for that.

How much was it from the factory?

 

Vehicle Type: 911 Carrera (996) / 911 Carrera 4 (996) / 911 Carrera 4S (996), 911 Targa (996)
Model Year: As of ’02 (2)
Concerns: Performance increase to 254 kW (345 HP)
Engine Type: Standard engine M96/03 – 235 kW (320 HP)
Equipment: Only for vehicles with manual transmission.
General: A parts set –”Carrera Powerkit”– is available to retrofit the standard engine with an increased performance
of 254 kW (345 HP). The following parts in the engine are replaced, exchanged or modified to
achieve this increased performance:
– new intake manifold with modified cross-section (material: sand cast aluminium );
– new intake pipe supports adapted to the form of the intake manifold;
– new exhaust manifolds with larger cross-section and optimized flow behavior;
– new cylinder heads with optimized, CNC-milled inlet ducts;
– new camshafts with larger valve stroke on the inlet side and modified inlet and outlet timing;
– inlet valve springs adapted to the enlarged valve stroke;
– modified partition box in the oil pan;
– modified maps for the DME control module.
The following steps are also taken on the vehicle:
– new underside panel in the transmission area;
– additional radiator in connection with modified front spoiler, except on the 911 Carrera 4S (996).
The higher-performance engine is also available as an option when ordering a new vehicles –
911 Carrera / 911 Carrera 4 / 911 Carrera 4S / 911 Targa – under Exclusive Option X51.
Software: In August 2002, the software for the PST2 was updated to version 14.0. After completing the
programming of the DME control module, the control module is given a new part number for the
respective country or variant (see also Point 8). The new number can be read out under the menu
item “Identification”.
Engine Break-in: Engine speeds greater than 5,000 rpm are not permitted over a run of 300 miles (500 km). The maximum
engine output of 254 kW (345 HP) depends on the total mileage of the engine at the time of the
retrofit and is achieved as from a total mileage of approx. 6,000 miles (10,000 km).
Warranty Info.: New vehicle with increased performance of Option X51: New-vehicle warranty in accordance with the
Porsche Guidelines.
Retrofitting: Warranty in accordance with the Repair Conditions and the Warranty Conditions for Original
Porsche Parts. If the engine to be converted has over 24,000 miles (40,000 km), the crankshaft
main bearings and the connecting-rod bearings must also be replaced. If there is obvious wear on the
connecting-rod bushings (scores), the connecting rods must also be replaced.
Technical Information 911 (996)
7/02 1 1001
Option X51 – Increased Engine Performance
©2002 Porsche Cars North America, Inc. Service Date: 12-6-02
Page 1 of 13
Binder - Group 1, Part 1, Engine
®
Technical Info: Standard engines “Carrera Powerkit” engines
Engine type: M96/03 M96/03 S
Number of cylinders: 6 6
Bore: 96 mm 96 mm
Stroke: 82.8 mm 82.8 mm
Displacement: 3,596 cm3 3,596 cm3
Compression ratio: 11.3 : 1 11.3 : 1
Max. engine power of 235 kW (320 HP) 254 kW (345 HP)
at engine speed: 6,800 rpm 6,800 rpm
Max. torque: 370 Nm (274 ftlb.) 370 Nm (274 ftlb.)
Max. litre output: 65.4 kW/l (89 HP/l) 70.6 kW/l (96 HP/l)
Rpm limitation at: 7,300 rpm 7,300 rpm
Idling speed: 670 ± 40 rpm 670 ± 40 rpm
Top speed: 285 km/h (178 mph) 290 km/h (181 mph)
280 km/h (175 mph) for 285 km/h (178 mph) for
911 Carrera 4S 911 Carrera 4S
Information: Please inform your sales staff and customers with regard to the engine break-in instructions. Copy the
first two pages of this Technical Information bulletin and give these to the customer!
911 (996) Technical Information
7/02 1 1001
©2002 Porsche Cars North America, Inc. Date: 12-6-02 Service
Page 2 of 13
®
Parts Information: 000.044.100.12 Performance increase to 254 kW (345 HP); Set
000.044.100.13 Sealing set
000.044.100.14* Additional radiator; Set
* Do not order for 911 Carrera 4S (996)!
Parts List: 000.044.100.12 – Set; performance increase:
996.104.043.41 1 x Cylinder head set; cylinders 1-3 and 4-6; incl. valves, valve springs,
plugs and cylinder head cover (incl. plugs)
999.217.155.09 23 x Hexagon-head bolt EN 1665–M6 x 30 micro-encapsulated (cyl. head
cover)
996.105.061.40 1 x Set of camshafts, consisting of 2 x inlet camshafts for cylinders
or optionally /061.41 1-3/4-6 and 2 x exhaust camshafts for cylinders 1-3/4-6
996.105.203.00 2 x Diamond ring (behind camshaft adjuster on inlet camshaft)
996.105.254.00 2 x Lock screw, adjuster on camshaft
900.378.242.09 8 x Hexagon-head bolt M6 x 12 (chain sprocket on camshaft)
999.217.150.09 8 x Hexagon-head bolt EN1665–M6 x 20 micro-encapsulated
996.107.243.40 1 x Assembly: oil pan with partition box
900.378.035.09 13 x Hexagon-head bolt M6 x 16 – EN1665 – (oil pan to engine)
996.110.980.40 2 x Intake distributor
996.110.983.00 2 x Intake pipe support
900.378.172.09 12 x Hexagon-head bolt DIN 6921–M6 x 35; intake distributor to support
996.110.170.51 1 x Sucking jet pump
996.111.101.40 1 x Exhaust manifold; cylinders 1-3
996.111.102.40 1 x Exhaust manifold; cylinders 4-6
999.075.071.00 12 x Hexagon-head bolt M8 x 28; DIN EN 24017; manifold flange
900.075.459.09 1 x Screw M6 x 12; DIN EN 24017
999.218.005.02 2 x Pan-head screw M6 x 16; DIN 912; Hall sender
996.573.980.00 1 x Suction line; air-conditioning compressor
996.113.239.40 1 x Secondary air line
996.110.511.50 1 x Angle
999.511.118.02 1 x Retaining clamp
996.110.151.01 1 x Adapter for sucking jet pump
999.230.498.40 1 x Pipe connection AD 15 (90)
999.919.130.09 5 x Hexagon-head bolt DIN 6921–M6 x 35
996.504.029.00 1 x Underside panel, transmission area
996.110.221.58 1 x Rubber sleeve from air cleaner to throttle adjuster with additional connection
for sucking jet pump
Technical Information 911 (996)
7/02 1 1001
©2002 Porsche Cars North America, Inc. Service Date: 12-6-02
Page 3 of 13
®
Parts List: (cont’d) 000.044.100.14 – Additional radiator set:
996.106.037.51 1 x Radiator
900.378.074.09 4 x Hexagon-head bolt M8 x 16; DIN 6921
930.113.430.00 4 x Rubber mount
999.591.869.02 4 x Sheetmetal nut M8
900.378.036.09 2 x Hexagon-head bolt M6 x 12; DIN 9221
999.507.550.02 2 x Sheetmetal nut M6
999.512.552.00 2 x Spring band clamp 28 x 12
996.504.487.02 1 x Upper retaining bracket
996.504.485.02 1 x Lower retaining bracket
996.106.666.52 1 x Hose
996.106.665.55 1 x Hose
996.505.561.02.01C 1 x Front end inner frame
996.575.141.02 1 x Front end air duct
000.044.100.13 – Sealing set:
996.110.103.50 2 x Seal; intake pipe/cylinder head
996.110.247.50 6 x Seal; intake pipe/intake distributor
996.111.107.55 2 x Seal; exhaust manifold
996.104.201.02 2 x Head gasket
999.707.404.40 1 x O-ring 17.05 x 1.78; Hall sender
900.123.007.30 1 x Sealing washer A14 x 18 for oil pressure sensor
996.104.203.00 6 x Sealing washer for spark plug
996.104.215.54 4 x Side cap for camshaft (green)
996.104.216.02 2 x Side cap for camshaft (brown)
996.105.244.03 4 x Cover
000.043.203.73 1 x Sealant, 30 ml
999.707.344.40 3 x O-ring 18.77 x 1.78; chain tensioner
999.701.163.40 2 x O-ring 11.0 x 2.5; sucking jet pump
996.107.221.51 2 x O-ring 95 x 2.5; oil extraction pump
999.707.346.40 6 x O-ring 15.0 x 3.0; guide piece screw
900.123.147.30 3 x Sealing ring A27 x 32; chain tensioner
944.110.901.01 12 x O-ring 7.52 x 3.53; injection valve
999.707.277.40 1 x O-ring 20.0 x 2.5; pressure regulator
999.707.276.40 1 x O-ring 5.0 x 2.5; pressure regulator
900.123.106.30 1 x Sealing ring A18 x 24; plug (oil drain plug)
999.701.761.40 6 x O-ring 28.0 x 2.0; sealing washer for cup housing / cyl. head
The sealing set contains only those seals required for conversion of the engine (replacing cylinder
heads, intake and exhaust manifolds).

 

its about 20k if i remember right + labor figure another 3k or so

 

Disclaimer: I have no experience with the 3.6L X51. My responses are based on my experience and the TSB.

Really? Because the kit includes new exhaust cams.

The kit for the 3.4L includes a new pan, and the baffles are much different. Can't answer for the 3.6.

The TSB does not list a new ECU and includes instructions to reflash it with the new map.

 

Oh, I'd trust the brochure.

 

Could someone tell me what the torque figures are for each year (99-2004)?
Did they jump up in 2002 when they went to the 3.6L?
Thanks.

 

Torque for 3.4L = 258 ft-lbs.
3.6L = 273 ft-lbs.

 

The exhaust cams for the regular 3.6l and X51 are exactly the same. If you look at the part list above, there are 2 different cam kits listed. Keep in mind that it is a fresh engine, you may want to reuse your exhaust cams when they get installed in the new heads. With more miles, you would want to replace them due to wear. Hence why they list the intake cams as a standard kit and the intake cams + the exhaust cams as an optional kit. There is a runout procedure in the service manual to check if they can be reused. There is a different degreeing procedure for how both cams are installed versus a regular 3.6. You will also notice they don't list an exhaust only cam kit above for this reason.

Porsche has been packaging an ECU in the kit to swap out the original for the DME upgrade. I didn't ask what they did with the original.

The part number listed above for the 'X51 Oil Pan', 996.107.243.40, is not a valid part number in either Porsche's North American part number system or the part number system out of Germany. The only place you will find this number is at Suncoast. If you have your dealer pull the 3.6l pan and baffle, the picture Suncoast shows looks exactly the same as a regular 3.6l pan (I had Boardwalk Porsche do this for me). I am still trying to figure this one out, but best guess is the pan was a change made for crank clearance with the longer stroke crank in the 3.6 over the 3.4.

The cheapest price I have seen the kit go for is $7500 through Fabspeed. Porsche specifies installation to be 25 hours of labor.

Here is a link to one of the dealers who carries it and what they charge for installation.
http://porsche.parkplacestores.com/capo.html

99-01 3.4l: 258 @ 4600 rpms
02-04 3.6l: 273 @ 4250 rpms
3.6l X51: 273 @ 4800 rpms

When they upped the displacement and added variocam plus, they not only increased the torque output; it now peaks lower in the rpm band. The X51 makes the same peak torque, just at higher rpms. With the X51, the give up some low end power to make more high end power. Although the 997' is rated 5 hp higher than the 996', it has the same torque peak at the same rpms: 273 @ 4250 rpms.

 

Hah hah hah, you guys crack me up.....I enjoy this way too much and it is quite informative on a micro basis. BUT, after all this time; WHAT'S up with the supercharger thingy.....They blow more 996 engines than a **** star does football teams!
UNLESS the engine is disassembled and reconfigured properly. better to trade up!

 

Do you have proof of this somewhere?
I have heard basically nothing but good about S/C's from all on this Forum.

 

Proof...Dude....I've have a few scatter in just the last year. They (owner) were not the sharpest tool in the shed to buy them that way to begin with. IF you don't go to the track, there's less problems BUT if you run them hard on the track....well...have a nice day is not in the cards. Mark
hARd the beat the "narzi's" at that game.