SL roadsters~of the series 129
Mercedes-Benz type SL 320
Type SL 320 
Name SL 320 
Name Mercedes-Benz type SL 320 
Short name SL 320 
Model R 129 E 32 
Production since 09.95 
Number produced in production 
Comments concerning the production period  
Prices 09.95: 133.917,50 DM 03.97: 135.585,00 DM 
Wheelbase 2515 mm 
Track rear/front 1535/1523 mm 
Length 4499 mm 
Width 1812 mm 
Height 1303 mm (with cabriolet top closed) 
Smallest turning circle 10,79 m 
Chassis weight
Max. total weight 2170 kg 
Max. front axle weight 1020 kg 
Max. rear axle weight 1170 kg 
Max. load 320 kg 
Max. trailer weight braked 1500 kg 
Max. trailer weight unbraked 750 kg 
Weight empty 1850 kg 
According to guideline according to guideline EG 92/21 (with driver, 68 kg, and luggage, 7 kg; tank filled 90 % ) 
Operating method four-stroke Otto (w/ manifold-injection and emission control device w/ three-way catalyst) 
Configuration front, parallel; upright 
Type M 104 E 32 / 104.991 
No. of cylinder/configuration 6 / in line; 15ř inclination to the right 
Bore x stroke 89,9 x 84,0 mm 
Total displacement 3199 ccm 
Compression ratio 10,0 
Crankshaft bearing
Output 170 kW / 231 hp at 5600 /min 
Maximum torque 315 Nm at 3750 /min 
No. of valves/configuration 2 intake, 2 exhaust / V-shaped overhead 
Valve operation 2 top camshafts (intake camshaft adjustable) 
Camshaft drive duplex roller-type chain 
Mixture formation microprocessor-controlled injection system with hot-film air-mass sensor (HFM; since 06.96: engine control Bosch ME) 
Cooling water cooling / pump; 11,0 l water 
Lubrication pressure circulation lubrication / 7,5 l oil 
Electric system 12 V 
Battery 100 Ah / in the boot 
Dynamo three-phase AC / 1540 W 
Starter motor electrical / 1,7 kW 
Ignition ignition mapping control 
Fuel tank above the rear axle / 80 l 
Fuel supply electric supply pump 
Driven whells rear wheels 
Power transmission divided cardan shaft 
Frame desing self-supporting all-steel body 
Wheel suspension front triangle-wishbone / shock-absorber strut, on demand with level control 
Wheel suspension rear multilink suspension, on demand with hydropneumatic level control 
Suspension front coil springs, torsion bar stabilizer 
Suspension rear coil springs, torsion bar type stabilizer 
Damper gas-pressure shock absorber struts / gas-pressure damper 
Steering ball-and-nut power steering 
Steering transm ratio 15,53:1 / 3 steering wheel turns 
Breaking system braking system 
Breaking system hydraulic dual-circuit braking system with vacuum-operated brake ~servo unit and antilock device, since 12.96 with brake assistance device;~disc brakes front (intern. ventilated) and rear 
Parking breake parking brake 
Parking breake mechanical (foot-operated), effective on rear wheels 
Diamatre brake discs front / rear: 300 / 290 mm 
Wheels light-alloy disc wheels 
Wheels rims 8 J x 16 H 2 
Tyres 225/55 ZR 16 

Skrzynie biegów tego modelu (gearbox and performance):

SL roadsters~of the series 129
Mercedes-Benz type SL 320
Gearbox 5-speed autom. gear shift with electron. control 
Availability Series 
Shifting Switch lever in car center 
Clutch hydr. torque converter with slip control clutch 
Type of gearbox Planet gear 
Synchromesh gears  
Gear transmission I. 3,93; II. 2,41; III. 1,49; IV. 1,0; V. 0,83; R. 3,10 
Differential ratio 3,45 
Maximum speed 240 km/h 
Accelerations 8,4 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 8,5/10,0/14,2 l 
acc. to guideline 80/1268/EWG; values for 90 km/h / 120 km/h / city cycle