Table 2

Table 2, Weight of Various Subassemblies: 1973 Porsche 911S (All weights are in US pounds)

Research and compilation by Jim Calzia

Abbreviations: Front, Rear, Left, Right, FiberGlass, Original Equipment

<<back to article

Original Equipment
Factory weight
Revised weight
Replacement Equipment

Interior

Sport seat and mount
53-54
28
Kirkey race seat and custom mount

Door (including door, 2xwindows, window mechanism, handle and lock), ea.
41
11
AIR 911R door w/handle and lock, no windows

Sunroof, false ceiling, motor, gear drive, cables, tubes, hardware
31
-
-

Front Suspension Assembly

Steel cross member, 2x A arms, 2x 23 mm solid torsion bars, 2x Boge struts w/ Koni inserts, 2x iron rotors, 2x aluminum hats, all wheel bearings
98
71
ERP Al cross member, 2x 935-style A arms, 2x Bilstein RSR struts, 2x 350 lb/in springs, 2x Al rotors, 2x Al hats, all wheel bearings

Rear Suspension Assembly

2x29 mm torsion bars, 2xadjustable spring plates, 2xaluminum bananas, 2x Koni shocks, 2x iron rotors, all wheel bearings and stub axles (inner and outer) 2x ERP spring plates, 2x aluminum bananas, 2x coil-over Koni shocks, 2x500 lb/in coil springs, 2x aluminum rotors, all wheel bearings and sub axles (inner and outer)
110
77
2x ERP spring plates, 2x aluminum bananas, 2x coil-over Koni shocks, 2x 500 lb/in coil springs, 2x aluminum rotors, all wheel bearings and stub axles (inner and outer)

Front Unsprung Weight

Original Equipment
Factory weight
Revised weight
Replacement Equipment

0.5xBoge strut w/ insert
6.5
6.5-7
0.5xRSR strut w/ insert

0.5xA arm
5
2.5
0.5xERP A arm

0.5xtie rod and ends
2
2
0.5xtie rod and bump steer kit

Iron rotor, aluminum hat, wheel bearings
15
11.5
Aluminum rotor, aluminum hat, block off plate, wheel bearings, nuts, grease cover

Al "S" caliper
6
7
944T caliper w/ mount and hardware

Fuchs 7Jx15 wheel w/ Goodyear race tire
32
38
HRE 9x16 wheel w/ Goodyear race tire

-
-
3.5
350 lb/in spring

Total weight/corner
66.5
64.5
-

Rear Unsprung Weight

Original Equipment
Factory weight
Revised weight
Replacement Equipment

0.5x adjustable spring plate
4.25
2.5
0.5x ERP spring plate

0.5xAl banana w/stub axle, all wheel bearings, and 5xwheel nuts
10.5
10.5
0.5xaluminum banana w/stub axle, all wheel bearings, and 5xwheel nuts

0.5xKoni shock
3
2.25
0.5xKoni coil-over shock w/ spring perches

0.5xhalf shaft and CV joint
6.75-7
5
0.5xtubular half shaft and lightened CV joint

Iron rotor
13
6.5-7
Aluminum rotor

M caliper
7
6
944T caliper w/ mount and hardware

Fuchs 7Jx15 wheel w/Goodyear race tire
32
41
HRE 11x16 wheel w/Goodyear race tire

hs
-
4
500 lb/in spring

Total weight/corner
69.75
71.25
g

Abbreviations: Front, Rear, Left, Right, FiberGlass, Original Equipment

<<back to Table 1, part 1
<<back to Table 1, part 2

<<back to article

top

Table 2, Weight of Various Subassemblies: 1973 Porsche 911S (All weights are in US pounds) Research and compilation by Jim Calzia Abbreviations: Front, Rear, Left, Right, FiberGlass, Original Equipment
<<back to article
Original Equipment	Factory weight	Revised weight	Replacement Equipment
Interior
Sport seat and mount	53-54	28	Kirkey race seat and custom mount
Door (including door, 2xwindows, window mechanism, handle and lock), ea.	41	11	AIR 911R door w/handle and lock, no windows
Sunroof, false ceiling, motor, gear drive, cables, tubes, hardware	31	-	-
Front Suspension Assembly
Steel cross member, 2x A arms, 2x 23 mm solid torsion bars, 2x Boge struts w/ Koni inserts, 2x iron rotors, 2x aluminum hats, all wheel bearings	98	71	ERP Al cross member, 2x 935-style A arms, 2x Bilstein RSR struts, 2x 350 lb/in springs, 2x Al rotors, 2x Al hats, all wheel bearings
Rear Suspension Assembly
2x29 mm torsion bars, 2xadjustable spring plates, 2xaluminum bananas, 2x Koni shocks, 2x iron rotors, all wheel bearings and stub axles (inner and outer) 2x ERP spring plates, 2x aluminum bananas, 2x coil-over Koni shocks, 2x500 lb/in coil springs, 2x aluminum rotors, all wheel bearings and sub axles (inner and outer)	110	77	2x ERP spring plates, 2x aluminum bananas, 2x coil-over Koni shocks, 2x 500 lb/in coil springs, 2x aluminum rotors, all wheel bearings and stub axles (inner and outer)

Front Unsprung Weight
Original Equipment	Factory weight	Revised weight	Replacement Equipment
0.5xBoge strut w/ insert	6.5	6.5-7	0.5xRSR strut w/ insert
0.5xA arm	5	2.5	0.5xERP A arm
0.5xtie rod and ends	2	2	0.5xtie rod and bump steer kit
Iron rotor, aluminum hat, wheel bearings	15	11.5	Aluminum rotor, aluminum hat, block off plate, wheel bearings, nuts, grease cover
Al "S" caliper	6	7	944T caliper w/ mount and hardware
Fuchs 7Jx15 wheel w/ Goodyear race tire	32	38	HRE 9x16 wheel w/ Goodyear race tire
-	-	3.5	350 lb/in spring
Total weight/corner	66.5	64.5	-

Rear Unsprung Weight
Original Equipment	Factory weight	Revised weight	Replacement Equipment
0.5x adjustable spring plate	4.25	2.5	0.5x ERP spring plate
0.5xAl banana w/stub axle, all wheel bearings, and 5xwheel nuts	10.5	10.5	0.5xaluminum banana w/stub axle, all wheel bearings, and 5xwheel nuts
0.5xKoni shock	3	2.25	0.5xKoni coil-over shock w/ spring perches
0.5xhalf shaft and CV joint	6.75-7	5	0.5xtubular half shaft and lightened CV joint
Iron rotor	13	6.5-7	Aluminum rotor
M caliper	7	6	944T caliper w/ mount and hardware
Fuchs 7Jx15 wheel w/Goodyear race tire	32	41	HRE 11x16 wheel w/Goodyear race tire
hs	-	4	500 lb/in spring
Total weight/corner	69.75	71.25	g
Abbreviations: Front, Rear, Left, Right, FiberGlass, Original Equipment <<back to Table 1, part 1 <<back to Table 1, part 2 <<back to article top