2004 PORSCHE 911 GT3 weight

SeatAdjustment

/!\
Warning!
The seat may move unexpectedly ifyou
attempt toadjust whiledriving. Thiscould
cause sudden lossofcontrol orpersonal in-
jury.

~ Donot adjust seatswhilethevehicle isin mo-
tion.
The backrest locksmustbeengaged atall
times whilethevehicle isinmotion.

Safety beltsonlyoffer protection whenthe
backrest isupright andthebelts areproperly
positioned onthe body.
Improperly positionedsafetybeltscancause
serious personal injuryinan accident.

~ Donot operate thecarwith thedriver orpas-
senger backrests excessively reclined
(see "Seat position").
Controls, Instruments
Seat
position

A correct sittingposition isimportant forsafe and
fatigue-free driving.
We recommend thefollowing procedure for
adjusting thedriver's seattosuit individual
requirements:
1. Adjust theseat height togive yourself enough
headroom andagood overview ofthe vehicle.
2. Adjust theseat until, withtheaccelerator pedal
fully depressed, yourlegisstraight butyour
entire footstillrests onthe accelerator pedal.
3. Grip thetop half ofthe steering wheel.
Set thebackrest angleandsteering-wheel
position sothat your arms arealmost
outstretched. However,yourshoulders must
still rest onthe backrest.
4. Ifnecessary, correcttheseat fore-and-aft
adjustment.
A
-
Seat height adjustment

~ Raise locking lever.
~ Set thedesired seatheight byshifting your
body weight.
~ Release thelever.

RoofTransport System

Follow theseparate instructions forfitting
the Roof Transport System.

Fitting commercially availableluggageracksis

not
possible.
The
Porsche RoofTransport System
allowsthe
transport ofvarious sportsandhobby equipment.
Your authorized Porschedealerwillbepleased to
inform youabout themany usesofthe Roof Trans-
port System.
Controls, Instruments
A

Warning!
Risk ofan accident, lossofcontrol anddam-
age tothe vehicle.

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Completely removetheRoof Transport Sys-
tem before usinganautomatic carwash.

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Fitthe side support elements ofthe basic car-
rier only inconjunction withthetransverse sup-
porting pipes.

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The permissible useableloadof165 Ibs
(75 kg), thepermissible totalvehicle weight
and thepermissible axleloads mustnotbe
exceeded. Please observe thechapter "WEIGHTS" on
Page 186.
Items ofluggage mustnotproject substantially
beyond theside ofthe load area.
Distribute loadevenly, withheavy itemsaslow
as possible.
Every itemmust befixed andsecured tothe
basic carrier witharope orlashing strap(do
not use elastic rubbertensioners).

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Before everyjourney, andatregular intervals
during longtrips, check thatRoof Transport
System andload aresecure.
Retighten ifnecessary andsecure additionally
by locking.
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Inthe loaded state,adjust maximum speedto
the nature, sizeandweight ofthe load being
carried.
In no case, however, shouldyoudrive atmore
than 90mph (140 km/h).

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With thebasic carrier installed andnoload, do
not exceed amaximum speedof110 mph
(180 km/h) sincedriving stability willbead-
versely affected.
Adapt yourdriving styleandspeed tothe
changed conditions.
Nevertheless, Porscherecommends thatyou
do not exceed theposted speedlimit.

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Driving, brakingandsteering behavior ofthe
vehicle change duetothe higher center of
gravity andthegreater wind-resistant area.
You should adaptyourdriving styleappropri-
ately.

Note

Since fuelconsumption andnoise areincreased
with theRoof Transport Systeminstalled, itshould
not remain onthe car ifit is not inuse.

FuelEconomy

Fuel economy willvary depending onwhere,
when andhow youdrive, optional equipment
installed, andthegeneral condition ofyour
car.
A car tuned tospecifications andcorrectly
maintained, willhelp youtoachieve optimal
fuel economy.

~ Have yourvehicle tunedtospecifications.
Air cleaner shouldbedirt free toallow proper
engine "breathing".
Battery shouldbefully charged.
Wheels shouldbeproperly aligned.
Tires should beinflated atcorrect pressure.
~ Always monitor yourfuelconsumption.
~ Drive smoothly, avoidabrupt changes inspeed
as much aspossible.
~ Avoid jackrabbit startsandsudden stops.
~ Donot drive longer thannecessary inthe lower
gears. Shifting intoahigher gearearly without
lugging theengine willhelp save fuel.
~ Prolonged "warmup"idling wastes gas.Start
the vehicle justbefore youareready todrive.
Accelerate slowlyandsmoothly.
~ Switch offthe engine ifstationary forlonger
periods.
Maintenance, CarCare ~
Any additional weightcarried inthe vehicle re-
duces fueleconomy. Alwayskeepcargo toa
minimum andremove allunnecessary items.
~ Organize yourtripstotake inseveral errands
in one trip.
~ Allelectrical accessories contributetoin-
creased fuelconsumption.
~ Only switch onthe airconditioning whenneces-
sary.
~ Donot drive withtheRoof Transport System
mounted unlessyouneed it.

The EPA estimated m.p.g.isto be used for
comparison purposes,actualmileage may
be different fromtheestimated m.p.g.,
depending onyour driving speed,weather
conditions andtriplength. Youractual
highway mileagewillprobably beless than
the estimated m.p.g.

~ Please observe alllocal andnational speed
limits.
Operating
YourPorsche inother
Countries

Government regulationsinthe United States and
Canada requirethatautomobiles meetspecific
emission regulations andsafety standards. There-
fore, carsbuiltforthe U.S. andCanada differfrom
vehicles soldinother countries.
If you plan totake your Porsche outsidetheconti-
nentallimits ofthe United States orCanada, there
is the possibility that
- unleaded fuelmay notbeavailable;
- unleaded fuelmay have aconsiderably lower
octane rating.Excessive engineknockandse-
rious damage toboth engine andcatalytic con-
verters couldresult;
- service maybeinadequate duetolack ofprop-
er service facilities, toolsordiagnostic equip-
ment;
- replacement partsmaynotbeavailable orvery
difficult toget.

Porsche cannotberesponsible forthe
mechanical damagethatcould result
because ofinadequate fuel,service orparts
availability.

If you purchased yourPorsche abroadandwant to
bring itback home, besure tofind outabout ship-
ping andforwarding requirements, aswell ascur-
rent import andcustoms regulations.

Wheelalignment, wheelbalancing

As aprecaution, havewheels withsummer tires
balanced
in
the spring, andthose withmud and
snow tiresbefore winter.
Unbalanced wheelsmayaffect carhandling and
tire life.
Only thespecified weightsmaybeused forwheel
balancing. Self-adhesive weightsmustnotcome intocontact
with cleaning agents,sincetheycould dropoff.
A wheel should always bebalanced afteratire re-
pair.
Uneven treadwearindicates wheelimbalance. In
this event, thevehicle shouldbechecked atan au-
thorized Porschedealer.

/!\.
Warning!
If, during ajourney, unevenrunning orvibra-
tions occur thatcould becaused bydamage
to tires orthe car, thespeed mustbere-
duced immediately, butwithout braking
sharply.
If you continue yourtripwithout havingthe
cause ofthe fault remedied, youmight lose
control ofyour vehicle whichcouldcause se-
vere personal injury.

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Stop thevehicle andcheck thetires.

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Ifno cause forthe fault canbefound, drive
carefully tothe nearest authorized Porsche
dealer.
Practical Tips,Emergency Service
Removing
andstoring tires

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After changing, adjusttirepressure andtorque
wheel boltsdiagonally to94 ftlb (130 Nm).
Please observe thechapter "CHANGING A
WHEEL" onPage 150.

Tires mustalways remain onthe same side
of the vehicle.

When wheels areremoved, thedirection ofrota-
tion andposition ofeach wheel should bemarked.

Example

FR (front right), FL,RRand RL.
Wheels mustalways befitted inaccordance with
their marking.
The preception thattiredurability andperfor-
mance areimmune tothe effects ofstorage and
age isunfounded.
Chemical additives, whichmaketherubber elas-
tic, lose their effectiveness inthe course oftime
and therubber becomes brittleandcracks.

Therefore, thetires should beinspected
from timetotime. Note

Under nocircumstances shouldtiresolder than6
years beused onyour Porsche.
The ageofthe tire can beobtained fromthe"DOT"
code number. If,for example, thelast four num-
bers read 1203, thenthetire was produced inthe
12th week of2003.

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Store tiresinacool anddryplace.

Snow tires

For abetter griponsnow andice,useradial M+S
tires withstuds.
Check withyour local Motor Vehicle Bureaufor
possible restrictions.

/!\.
Warning!
Risk ofloss ofcontrol anddamage tothe
vehicle aswell assevere personal injury.
The standard tiresprofile andrubber mix-
ture areoptimized forwet and drydriving
conditions, andmay notprove favorable for
snow conditions.

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Therefore installM+Stiresbefore driving in
such conditions.

Adjusting Headlights

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Please observe thechapter "LIGHTS, REPLAC-
ING BULBS" onPage 162.
Adjustment
The adjustment ismade withthevehicle readyto
drive andthefuel tank completely filled.
The driver's seatmust beloaded byaperson ora
165 Ibs.(75kg)weight andthetire pressures
must meet theprescribed values.
After being loaded, thecarmust berolled afew
meters sothat thesuspension cansettle. For
checking theheadlight adjustment, theverti-
cal position ofthe cutoff ofthe lowbeam (seefig.)
has tobe projected onavertical screen(wall)in
distance of7.5 mfrom thefront lensofthe head-
lamp.
The correct position ofthe cutoff is5cm at7.5 m
(0.4°) below ahorizontal line,xcm from ground to
the center ofthe headlamp lens. Lateral
adjustment ofthe headlights shouldbe
carried outataspecialist workshop withanoptical
adjustment unit.

Distance

Visual aimshall beperformed atnot less than
7.5 m(this value isarounded downconversion
from the25-foot distance typicaloffield aimusing
a screen). The7.5mdistance ismeasured from
the headlamp lenstothe viewing screen.

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Practical Tips,Emergency Service
175

Safetycompliance sticker

The safety compliance stickerisyour assurance
that your newPorsche complies withallapplicable
Federal MotorVehicle SafetyStandards which
were ineffect atthe time thevehicle wasmanufac-
tured.
The sticker alsoshows themonth andyear ofpro-
duction andthevehicle identification numberof
your car(perforations) aswell asthe Gross Vehi-
cle Weight RatingandtheGross AxleWeight
Rat-

Ing.
Paint
data

The paint dataplate isattached tothe leftside wall
under thecarpet inthe luggage compartment.
Engine
number

The engine number isstamped onthe underside
of the crankcase.
Vehicle Identification, TechnicalData

Technical Data

Engine data

Type

Number ofcylinders
Bore
Stroke
Cubic capacity
Compression ratio
Net-horsepower, SAE
J
1349
at crankshaft speed
Net torque, SAE
J
1349
at crankshaft speed
Alternator Engine control

Driving Performance*

Maximum speed
Acceleration 0- 100 km;1l (62mph)
M
96/79

Horizontally opposedengine,liquidcooled

6
3.94 in./lOO mm
3.0 in./76.4 mm
219.7 cu.in./3600 cm
3

11.7:1
380 hp/280 kW
7400 rpm
285 ft.Ib./385 Nm
5000 rpm
1680 W/120 A
Stationar yhigh-voltage distribution,sequentialinjection,
cylinder-selective knock-control,stereooxygen sensorclosed-loop control,diagnostic system,
4 overhead camshafts, PorscheVarioCam, hydraulicvalveclearance compensation
190 mph/306 km;1l
4.5 seconds

*
At DIN empty weight andhalfload, without performance-inhibiting extraequipment
Technical Data

Weights
Empty weight (depending onequipment)
Maximum grossweight
Maximum axleload, front-
Maximum axleload, rear-
Maximum usefulload,RoofTransport System-- 3042
Ibs.to3152 Ibs.
1380 kgto 1430 kg
3659 Ibs./1660 kg
1565 Ibs./71 0kg
2226 Ibs./1010 kg
165 Ibs./75 kg
The maximum grossweight mustnotbeexceeded.

Note:
Ifadditional accessories areinstalled, theuseful loadwillbecorrespondingly less.
Use only Original Porsche RoofTransport System.

Dimensions

Length
Width Height
Wheelbase Ground clearance
Turning circle
Overhang anglefront
Overhang anglerear
Ramp angle
Technical Data 175.98
in./4470
mm

69.7 in./1770
mm

50.2 in./1275
mm

92.7 in./2355
mm

2.9 in.j75
mm

34.8 ft./10.6 m

7.0
0

13.0
0

10S