991.2 GT3 lightweighting project
#61
Race Car
Joined: Jan 2013
Posts: 4,486
Likes: 441
From: The way to hell is paved by good intentions “Wenn ich Purist höre...entsichere ich meinen Browning” "Myths are fuel for marketing (and nowadays for flippers too,,,)" time to time is not sufficient to be a saint, you must be also an Hero
#64
Well you probably weigh about 100lbs less than me and there are things I won’t do to save weight too. :-)
Do you have part numbers or a link to the T/3RS.2 glass? For $1500 I would do the rear window as I dislike the defroster lines and find them distracting.
Peter Stout commented on the T glass in his review of the T and GT3 touring thread.
#65
#66
Some food for thought.
A Lithium Ion Battery and Valved Side Muffler Bypass Pipes (Maintains PSE Function) cost about $2500, saves about 75lbs off the car, and gets rid of a good bit of heat soak right behind the rear tires.
If you have Iron Rotors, switching to ST Ceramics additionally saves 45lbs of rotational mass for about $13k.
A Lithium Ion Battery and Valved Side Muffler Bypass Pipes (Maintains PSE Function) cost about $2500, saves about 75lbs off the car, and gets rid of a good bit of heat soak right behind the rear tires.
If you have Iron Rotors, switching to ST Ceramics additionally saves 45lbs of rotational mass for about $13k.
#67
IF you interested in Lithium Batteries you can check out our latest product. We make a battery and tray mount that will drop into the GT3. Video is below.
Our latest battery has built-in protections so that you will not be stranded if the battery accidentally gets over-discharged.
Our latest battery has built-in protections so that you will not be stranded if the battery accidentally gets over-discharged.
#68
#69
https://rennlist.com/forums/991-gt3-...omparison.html
#70
Eagerly awaiting delivery of my GT3 in October. Relatively lightweight build to start with: manual, LWB seats, PCCBs, base audio. Only weight penalties are for FAL and LED lights. So, my rough math puts the weight at ~25 lbs. over Porsche's quoted weight for the lightest possible configuration, for a total of 3,140 lbs.
My goal is to get that number under 3,000 lbs. with aftermarket options. Mostly just for fun and psychological satisfaction.
I'm already having an Akropovic full race exhaust installed at delivery (side mufflers delete, center bypass, titanium, etc.). That's good for 60 lbs.
What next?
I figure lightweight battery is a no-brainer. Liteblox would lose me another 45 lbs.
Then there are the BBS/Manthey magnesium wheels. Pricey (~$17K), but lots of benefits outside of pure weight loss. I believe they'd save an additional 25 lbs. or so? They also look amazing.
That gets me to a total weight savings of 130 lbs. (someone please correct me if I'm off somewhere).
Where to grab the next 10+ lbs.?
I was thinking maybe lightweight glass for the rear windows. Good for 6-8 lbs.?
Manthey carbon fiber wing? Don't know if any lighter than stock.
Just for the titanium exhaust, magnesium wheels, and lightweight battery, I'm out ~$30K already. Stupid? Or an awesome GT3? I'm rationalizing that a manual GT3 is currently the lightest 911 you can get from Porsche, so not so worried about eclipsing the cost of an RS. This build will be lighter than an RS and maybe be more nimble and lightfooted, though certainly less stable around a track. Or no?
My goal is to get that number under 3,000 lbs. with aftermarket options. Mostly just for fun and psychological satisfaction.
I'm already having an Akropovic full race exhaust installed at delivery (side mufflers delete, center bypass, titanium, etc.). That's good for 60 lbs.
What next?
I figure lightweight battery is a no-brainer. Liteblox would lose me another 45 lbs.
Then there are the BBS/Manthey magnesium wheels. Pricey (~$17K), but lots of benefits outside of pure weight loss. I believe they'd save an additional 25 lbs. or so? They also look amazing.
That gets me to a total weight savings of 130 lbs. (someone please correct me if I'm off somewhere).
Where to grab the next 10+ lbs.?
I was thinking maybe lightweight glass for the rear windows. Good for 6-8 lbs.?
Manthey carbon fiber wing? Don't know if any lighter than stock.
Just for the titanium exhaust, magnesium wheels, and lightweight battery, I'm out ~$30K already. Stupid? Or an awesome GT3? I'm rationalizing that a manual GT3 is currently the lightest 911 you can get from Porsche, so not so worried about eclipsing the cost of an RS. This build will be lighter than an RS and maybe be more nimble and lightfooted, though certainly less stable around a track. Or no?
Totally off topic but i just realizing how heavy the gt3 is and how hard it is to have a streetable light car and how bloody brilliant the c6 z06 is, all these mods would put it probably less than 2700lbs with a whole lot more tq.
#71
factory radio and ac delete, magnesium bbs, that akra, carbon and the sides in carbon, gt2 seats or just recaro pole position, roof in carbon, no extended leather, manual transmission, plastic back window and side windows and ceramics. That will be, probably the lightest gt3 possible.
Totally off topic but i just realizing how heavy the gt3 is and how hard it is to have a streetable light car and how bloody brilliant the c6 z06 is, all these mods would put it probably less than 2700lbs with a whole lot more tq.
Totally off topic but i just realizing how heavy the gt3 is and how hard it is to have a streetable light car and how bloody brilliant the c6 z06 is, all these mods would put it probably less than 2700lbs with a whole lot more tq.