911 Vehicle Weight

[LongRanger]

Interesting figures form a recent vehicle weigh-in done locally, here in SoCal . . .

2359 . . . . . 1970 914-6 GT, 3/4 tank gas (100 ltr), fiberglass front and rear deck lids and bumpers, metal GT flares, no spare
2376 . . . . . 1970 911T, 5/8 tank gas, Spare tire in place. No radio, vent blower motor, rear seats. Small Lightweight Odyssey battery.
2436 . . . . . 1971 911T, 1/2 tank gas, Spare tire in place
2452 . . . . . 1973 911T RS clone, 1/2 tank gas, Spare tire in place, Fiberglass Duck tail, Front and Rear bumpers, Roll Bar, L/W seats, RS Carpet, No rear seats
2464.5 . . . . 1973 911T, 3/4 tank gas, Spare tire in place
2473 . . . . . 1970 911S, 1/4 tank gas, fiberglass duck tail, Spare tire in place
2483.5 . . . . 1970 911T, 3/4 tank gas, Spare tire in place
2489 . . . . . 1970 911E, Full tank gas, Spare tire in place
2493.5 . . . . 1971 911T, 1/2 tank gas, Spare tire in place
2509 . . . . . 1966 911, 1/2 tank gas, Spare tire in place
2524 . . . . . 1970 911T, 1/2 tank gas, Spare tire in place
2559 . . . . . 1969 911 RS clone, 1/2 Fuel (SC tank), Spare tire in place. Fiberglass front and rear bumpers
2652.5 . . . . 1970 911T Targa, 1/2 tank gas, Spare tire in place
2885.5 . . . . 1984 Carrera Cpe, 5/8 tank gas, Spare tire in place
3227.5 . . . . 3.8 BMW CSL Grp 2 Clone, 1/2 tank gas
3376.5 . . . . 1989 964, 3/4 tank gas, Spare tire in place
3435.5 . . . . 2004 Carrera 40th Anniv, 1/2 tank gas, Spare in place


Note the differing amounts of fuel. I'm figuring gasoline at 6.2lbs/gal, so you can go back and twiggle these numbers for a better comparison . . . but you get the idea.

Some of the things that stand out for me . . .

1) 914s aren't that light!

2) Older doesn't necessarily denote Lighter

3) Compare these figures to Porsche's homologated weights with the FIA . . .

http://www.early911sregistry.org/for...vehicle+weight

4) A 964 is how much heavier than an Early 911?

Wow.

I don't have my Owner's Manual handy but the published weight figures I've seen on-line quote 2390 lbs/1085 kg for a '70. I weighed my car on a commercial truck scale, locally --- 2360 lbs/1070kg.

Curious what kinds of actual measured weights people have for their cars.

Rick

[LongRanger]

I would love to build a replica narrow-body (pre-S/T) factory-style light-weight.

I'd have to forgo all the thin-gauge stampings the factory used but here's what I would do . .

1) Start with a clean T-car, no sunroof

2) On the interior, remove carpets+floor mats, door-panels, head-liner, front and back seats, glove box door --- install Scheel-type seats/rails, factory-style roll-hoop, perlon-type roof-liner. Leave the glass . . . for now

3) Strip trunk . . . full spare, jack, tool-roll only --- tower-brace, maybe

4) Leave sound mat in the engine compartment . . . for now

5) Strip undercoating except in the wheel wells and front edge of the floor pan

6) Delete all exterior trim . . . decos, lettering, fog-light covers, hood badge, bumper guards, reflectors --- everything. Leave the holes

7) Delete front and rear release mechanisms --- replace with rubber pull-downs

8) Replace engine cover+rear valance-license panel with factory aluminum panels

9) Replace hood, front fenders, front and rear bumpers with fiberglass panels

10) Strip exterior paint, remove filler from rocker seam, then re-finish in non-metallic single stage

11) Paint black strips across both bumpers

Still has its window winders, door seals, pop-outs, etc. And heat-exchangers --- heat + de-frost

But still . . . Two thousand pounds?

Rick

[LongRanger]

. . . and I would love to know what The Olive Tart weighs . . .

Rick

[Flieger]

My car is a little over 2000 pounds. It was 2008 with a 1/2 tank of fuel but then we switched to some better looking and more supportive RSR shell seat replicas which someone made to withstand an ICBM attack. So its a little more than that now. We also changed the suspension bushings over to the Rebel Racing bits so might have saved some weight there but probably a wash.

[LongRanger]

. . . car is a little over 2000 pounds . . . was 2008 with a 1/2 tank of fuel but then we switched to some . . . RSR shell seat replicas . . . So its a little more than that now . . .

You're one of the few people here who actually point up their vehicle's weight --- 910 kg = 2006 lbs --- what kinda stuff did you do to knock-down your poundage?

Rick

PS 2008 lbs = 911 kg

[Flieger]

I thought it was too freaky coincidental to have it 911kg so I changed it. Guess I should have picked 917kg.

My car is sort of a ringer here since it is basically a track car registered for the street. No interior (except seats). No heater or other stuff like that. Lexan windows except front screen. Fiberglass everything. Hood, fenders, rear quarter panels, doors, ducktail, rear bumper, front bumper. Magnesium type 911 transaxle, Magnesium engine case.

It does have a bolt-in cage and 16 inch Fuchs (7s and 8s) to add back some weight. The MFI is a little heavier than carbs.

[ttweed]

Interesting figures form a recent vehicle weigh-in done locally, here in SoCal . . .

3376.5 . . . . 1989 964, 3/4 tank gas, Spare tire in place

[snipped]

4) A 964 is how much heavier than an Early 911?

What I have usually seen listed for 964 curb weight (to DIN 70020): 3031 lbs./1375 kg (C2); 3100 lbs. (Tiptronic); 3252 lbs. (C4)
The Zone 8 and PCA Parade Competition Rules list the 964 C2 weight as 3031 lbs. also.

[edesign45]

FWIW- The 964 (at 3376.5) was a C4 and on the scales w/driver. In fact, all weights listed that day were with the owners in their cars.

Interesting figures form a recent vehicle weigh-in done locally, here in SoCal . . .

2359 . . . . . 1970 914-6 GT, 3/4 tank gas (100 ltr), fiberglass front and rear deck lids and bumpers, metal GT flares, no spare
2376 . . . . . 1970 911T, 5/8 tank gas, Spare tire in place. No radio, vent blower motor, rear seats. Small Lightweight Odyssey battery.
2436 . . . . . 1971 911T, 1/2 tank gas, Spare tire in place
2452 . . . . . 1973 911T RS clone, 1/2 tank gas, Spare tire in place, Fiberglass Duck tail, Front and Rear bumpers, Roll Bar, L/W seats, RS Carpet, No rear seats
2464.5 . . . . 1973 911T, 3/4 tank gas, Spare tire in place
2473 . . . . . 1970 911S, 1/4 tank gas, fiberglass duck tail, Spare tire in place
2483.5 . . . . 1970 911T, 3/4 tank gas, Spare tire in place
2489 . . . . . 1970 911E, Full tank gas, Spare tire in place
2493.5 . . . . 1971 911T, 1/2 tank gas, Spare tire in place
2509 . . . . . 1966 911, 1/2 tank gas, Spare tire in place
2524 . . . . . 1970 911T, 1/2 tank gas, Spare tire in place
2559 . . . . . 1969 911 RS clone, 1/2 Fuel (SC tank), Spare tire in place. Fiberglass front and rear bumpers
2652.5 . . . . 1970 911T Targa, 1/2 tank gas, Spare tire in place
2885.5 . . . . 1984 Carrera Cpe, 5/8 tank gas, Spare tire in place
3227.5 . . . . 3.8 BMW CSL Grp 2 Clone, 1/2 tank gas
3376.5 . . . . 1989 964, 3/4 tank gas, Spare tire in place
3435.5 . . . . 2004 Carrera 40th Anniv, 1/2 tank gas, Spare in place


Note the differing amounts of fuel. I'm figuring gasoline at 6.2lbs/gal, so you can go back and twiggle these numbers for a better comparison . . . but you get the idea.

Some of the things that stands out for me . . .

1) 914s aren't that light!

2) Older doesn't necessarily denote Lighter

3) Compare these figures to Porsche's homologated weights with the FIA . . .

http://www.early911sregistry.org/for...vehicle+weight

4) A 964 is how much heavier than an Early 911?

Wow.

I don't have my Owner's Manual handy but the published weight figures I've seen on-line quote 2390 for a '70. I weighed my car on a commercial truck scale, locally --- 2360.

Curious what kinds of actual measured weights people have for their cars.

Rick

[super9064]

If the drivers were in their cars, and we don't know their weights, and fuel content is a guess as well as variables such as tools spare tires. Then the error introduced makes it hard to extrapolate accurate data.

I would suggest that we post the weights of our cars with out driver, and a full tank of gas, spare and tools. To be consistent.

[ttweed]

I would suggest that we post the weights of our cars with out driver, and a full tank of gas, spare and tools. To be consistent.

My 1968 911 sunroof coupe weighs 2340 lbs. in street trim according to this standard. The factory DIN curb weight in the manual is 2381 lbs. My car is highly modified, though, and not really representative of the model. It has lightweight FRP lids and bumpers and light enclosures, a lightweight interior (no soundproofing w/RS carpet kit, R-door panels, bucket seats, and rubber mats), but then a 3-liter aluminum-cased engine and a late 915 transaxle adding weight back in, along with a 70-lb. roll bar assembly. With tool kit, jack and spare tire removed, and lighter race wheels and tires mounted, it weighs 2270 lbs.

My 1991 Carrera Cup car weighs 2430 lbs. with 3/4 tank of gas but no driver. It is also highly modified w/ full cage, full lightweight FRP 993EVO widebody panels, no interior trim or soundproofing w/ a single race seat, Lexan windows, 3.8L engine w/ large 18-qt. front drysump tank, and G50 6-speed transaxle. Not really comparable to anything else either, but another datapoint for this list.

TT