micahbones

A recent discussion about dealer-spec cars led me to thinking about actual weight savings for various options on the 997.2 GT3 & RS, so I though this thread might provide a good summary of weight saved vs. added for various options. Please fill in, add, or correct the below per your information.

Factory Weight savings

-PCCB ($8,840) = 5kg per corner, 20kg/44lbs total saved
-Air-con delete ($0) = 15kg/33lbs saved
-Sport bucket seats ($2,990 option on GT3) = 14 kg/31lbs saved --> also see post2 #10 & #21 by JAMS for additional DIY seat options saving 14kg/30lbs & 23kg/51lbs respectively for GT2 and CGT sport seats (compared to standard sport buckets)
-Lithium-ion battery ($1,700)= 10.5kg/23lbs saved
-Lightweight halogen headlights w/o headlight washing system ($0) = 6kg/13lbs saved
-Audio system delete ($0) = 5kg/11lbs saved

Factoty Weight additions

+Factory roll cage ($0, Euro-spec only) = up to 30kg/65lbs added inc. harnesses
+Upgraded audio "sound package plus" ($690) = 7kg/15lbs? added above standard audio
+Front lift system ($3,490) = 3.5kg/8lbs kg added
+Interior leather ($3,285) = 3.5kg/8lbs added
+PCM w/ extended navigation ($3,110) = 2kg/5lbs? added
+Sport chrono ($690) = 1 kg/2lbs? added
+Grey or blue paint ($0) = ?kg added
+90-liter fuel tank ($?, Euro-spec only) = ? kg added
+North American spec glass rear window = ? kg added

Aftermarket Weight Savings

-Sharkwerks & Akrapovic exhaust options (from $1900 to wicked expensive) = up to 26kg/57lbs saved
-Centerlock wheel options --> still need accurate pricing & confirmed weight savings info, but here is some info as posted on manufacturer's websites and from other threads on Rennlist (list below in alphabetic order):
1. BBS 3 piece & monoblocks ($?) = ?kg/lbs saved
2. Forged Alloy ($?) = 2.7kg/6lbs? saved per front wheel, 3.6kg/8lbs? saved per rear wheel
3. Forgeline ($1,159 per wheel front, $1399 per wheel rear) = ?kg/lbs saved
4. GMG ($?) = 1.6kg3.5lbs saved per front wheel, 2.7kg/6lbs saved per rear wheel
-VoltPhreaks & other lightweight battery options (~$1300) = up to 6kg/13lbs saved from factory lightweight battery

Of course we also need to think about the relative placement of the item in question: front/rear/central, up high/down low in the chassis.

One more item -- Nizer confirmed in post #8 below that exhaust spec is the same across markets: titanium center muffler & exhaust tips with all other components steel.

Hope this is helpful, and thank for your answers!

savyboy

Front lift pump low in tunnel/low on shocks ~8lbs
PCM/NAV ~ 5 lbs

Sport Chrono?? Who would spec this in these cars? But prob 2 lbs?

Don't forget...full leather is +8lbs!

996FLT6

If I track and want harnesses u need to add rollcage which adds 45-65 lbs more(half cage). Mike

996FLT6

If I track and want harnesses u need to add rollcage which adds 45-65 lbs more(half cage). Mike

MarekN

How about sports seats vs bucket seats? I am not sure these apply to US market, though.

brownan

I added Sport Chrono. Frankly, I like the timer. Agree that functionality is otherwise limited relative to the Sport Chrono I have in my 08 Turbo.

mooty

i used to laugh at sport seats. but now i have very bad lower back i can see why some ppl NEED sport seats. that said, i still ordered sport bucket.

Nizer

US & ROW exhaust same. Ti center muffler and tips. All else steel.

micahbones

Information updated in original post above. Thanks for your answers bros!

Any ideas about weight saved with audio system delete, or other question marks?

JAMS

Adaptive Sport Seats 128.0 lbs.
Regular Sport Seats 97.2 lbs.
GT2 style Sport Seats 67.0 lbs.
CGT style Sport Seats 45.8 lbs.

jumper5836

I am sure the high end audio system weights more then the crap default one. Speakers are the majority of the weight. Also Nav and the CDR-30 unit are probably very similar is weight I doubt the Nav unit weights any thing significantly more then CDR-30 unit.

Wilder

This is for both correct? Do these numbers include rails? I would have thought CGTs might be lighter considering 6GT3 seats are 13-14lbs each without rails. Then again, they would make sense if they include the rails.

Carrera GT

Those numbers would have to include rails/sliders, but I would have guess the shell seat (Carrera GT-like) would have been substantially lighter than the folding (GT2-like) seat.

micahbones

What might you estimate both the stock and upgraded audio weigh? I am thinking
that the radio delete could save upwards of 10-15lbs, but am not sure.

markus_t19

this is a quote from german website (PFF) where someone cites a letter received from PAG with some translation from me in italics

...vielen Dank für Ihre E-Mail vom 03. September 2009 und Ihr damit verbundenes
Interesse an den Produkten unseres Hauses.

Nach Prüfung durch die
Fachabteilung möchten wir Ihnen mitteilen (after checking with the various in-house departments), dass wenn Sie Ihren Porsche
911 GT3 RS
so ausstatten, wie in Ihrer E-Mail beschrieben, Sie auf einen
Gewichtsvorteil von ca. 50 kg kommen (weight savings totalling 50 kg)
- Leichtbauscheinwerfer ca. 5kg, (lightweight lights)
- PCCB ca. 15 kg Ersparnis gegenüber Stahlbremse, (vs steel brake)
- Lithium-Ionen-Batterie ca.10 kg Ersparnis gegenüber einer
Bleibatterie
- ohne Klimaanlage ca. 15 kg Ersparnis, (A/C delete)
- ohne Radiosystem ca. 5 kg Ersparnis). (radio delete)