Lancia Stratos HF Group 4 ve Stradale Karşılaştırması
 


My
Stratos HF Group 4

Stratos HF Stradale

Engine

Ferrari
tipo 236 E. Cast iron block, aluminum
head construction. Centrally and transversally mounted.

Bore: 93mm, Stroke: 60mm, 2444 cm3 , water cooled
Ferrari Dino V6@65°.
C.P.S.
high compression, forged billet aluminium pistons,
heat-treated
steel crankshaft  2
piston rings (1 compression, 1 oil)
. 4
modified (310° duration), high-lift (11mm) OHC, double timing-chain driven, modified chain
stretcher mechanism
 and solid tappets. 2 valves per cylinder (V layout@46°) with dual valve springs.
Compression ratio
11.4:1Ported and gas-flowed head. 3 twin-throat
48 IDF Weber
down-draft carburetors. "Electronic Racing" ignition and uprated coil.
Modified distributor using a 3 lobe cam. NGK BP8 EVX spark plugs.
Relocated Group 4 alternator driven by inlet camshaft-mounted
pulley. Group 4 oil catch tank. Super baffled Group 4 engine oil sump.
Group 4 lightened flywheel.

The engine head has been converted to use big valves (45 mm
inlet, 39 mm exhaust
), bronze-beryllium valve seats and
guides, 3 angle valve seats.

Group4 air filter and 80mm trumpets. Group 4
exhaust manifolds. Free-flow Group 4 exhaust. Upgraded engine mounts.

Max power: approx. 265 Bhp@7800rpm, 28 Kg/m@4500rpm

Ferrari
tipo 236 E. Cast iron block, aluminum
head construction. Centrally and transversally mounted.

Bore: 92.5mm, Stroke: 60mm, 2418 cm3 , water cooled
Ferrari Dino V6@65°. Mondial or Borgo cast aluminium pistons, heat-treated steel crankshaft and conrods.
3 piston rings (2 compression, 1 oil). 4 OHC, double timing chain driven and solid tappets. 2 valves per cylinder
(intake 42.5 mm, exhaust 36.8 mm, V layout@46°)
with dual valve springs. Sodium-filled exhaust valves. Compression ratio
9:1.  3 twin-throat 40 IDF 28/29 Weber down-draft carburetors. Water to oil heat
exchange. Marelli Electronic ignition. Champion N 60 Y spark plugs. 6
lobe cam distributor.

Max power: approx. 190 Bhp@7000rpm, 22.9 Kg/m@4000rpm

Transmission

Rear wheel drive layout. 
ZF Limited slip differential. Lancia late Group 4 five speed, fully synchronized
using late Group 4 synchromeshes, dog-leg 1st
gearbox.

Group 4 clutch shaft and cascade gear set, Group
4 cascade gear cover, interchangeable ratios.

Gear ratios – speed at 8000 RPM
(depending on cascade gear set)
:
1:3.143 56.3 or 70.38 or  82.62 Km/h

2:2.2478.99 or 98.74 or 115.92 Km/h
3:1.762100.43

or
125.73
or
147.37 Km/h
4:1.417 124.88

or
156.1
or
183.25 Km/h
5:1.154153.34 or 191.67 or 225.02 Km/h

R:1.733

Final drive ratio: 3.824:1

Choice of alternative idler gear set ratios:

A: 0.937:1, B: 1.1:1, C: 1.375:1

Plate-based ZF limited slip differential set at 40%

Group 4 sintered-metallic dual-plate hydraulically operated clutch.

Group 4 high ratio rack and pinion steering,

2.5 turns
lock to lock
. Adjustable steering ratio.

Rear wheel drive layout. 
ZF Limited slip differential. Ferrari Dino five speed, fully synchronized dog-leg 1st
gearbox.

Gear ratios – speed at 8000 RPM:
1:3.554 – 64.83 Km/h

2:2.459 – 93.69 Km/h
3:1.781 – 129.36 Km/h
4:1.32 –  174.54 Km/h

5:0.986 – 233.67 Km/h
R:3.3

Idler gear: 1.1:1

Final drive ratio: 3.824:1

Plate-based ZF limited slip differential set at 40%

Single dry plate hydraulically operated clutch, Ø228.6mm.

Rack and pinion steering, 3.32 turns
lock to lock

Suspension

Front:
Fully rose-jointed layout. Independent super-imposed

group 4 strengthened wishbones lower track control and reaction
arm
, Group 4 Bilstein telescopic dampers
and height-adjustable Group 4 Eibach coilover springs. Group 4 adjustable anti-roll bar

Rear: Fully rose-jointed layout. Independent
McPherson struts, Group 4 hub carriersGroup 4 Bilstein telescopic dampers and height-adjustable
Group 4 Eibach coilover springs, single lower
inverted strengthened wishbone plus radius arm. Group 4
adjustable anti-roll bar

Front:
Partially rose-jointed layout. Independent super-imposed wishbones lower
track control and reaction arm, telescopic dampers
and height-adjustable coilover springs.
Adjustable anti-roll bar

Rear: Partially rose-jointed layout. Independent
McPherson struts, telescopic dampers and height-adjustable coilover
springs, single lower
inversed wishbone plus radius arm. Adjustable anti-roll bar

Brakes Front: AP vented disks (267 mm,
28mm)
,
Group 4
AP/Lockheed
fixed 4 piston (piston Ø 44,45mm) monobloc aluminum
calipers,
Pagid yellow (RS19)
pads

Rear: AP vented disks (267 mm, 28mm),

Group 4 AP/Lockheed fixed 4 piston
(piston Ø 38,1mm)
aluminum monoblock calipersPagid
black (RS14)
pads

Dual circuit, dual Girling master cylinders with
adjustable ratio
, no servo assistance, steel-braided
Teflon brake hoses
.

Front: Girling vented disks (271 mm,
22mm),
ATE fixed 2 piston (piston Ø 48mm) cast iron calipers

Rear: Girling vented disks (271 mm,
20mm), ATE fixed 2 piston
(piston Ø 38mm) cast iron calipers

Dual, circuit, no servo assistance

Chassis

Monocoque steel
and space-frame construction with integral roll-cage. Fiberglass body. Sand blasted and
corrosion protected body

Monocoque steel
and space-frame construction with integral roll-cage. Fiberglass body

Wheels/Tires

8"x15" Campagnolo, 205/50ZR15 front, 225/50ZR15 rear Pirelli P
Zero C tires

8"x15" Campagnolo front, 12"x15"
Campagnolo rear wheels, 18/60VR15 front, 26/61VR15 rear Michelin TB15 tires

8"x15" 3 part Speedline front, 12"x15"
3 part Speedline rear wheels, 225/50ZR15 front, 285/40ZR15 rear Pirelli
P7 tires

7.5"x14" Campagnolo cast magnesium
wheels, Michelin 205/70ZR14  XWX or Pirelli CN36

Dimensions Length: 3710mm

Width: 1750mm-1810mm
depending on the rear cover used

Height: 1100-1200mm

Wheelbase: 2180mm

Front track: 1433-1490mm
depending on wheels used

Rear track: 1457-1570mm depending on
wheels used

Dry weight: 790Kg
F:165Kg-160Kg

R:235Kg-230Kg

Fuel capacity: 2
tanks totaling 80lt

Length: 3710mm

Width: 1750mm

Height: 1114mm

Wheelbase: 2180mm

Front track: 1433mm

Rear track: 1457mm

Laden weight: 980Kg

Fuel capacity: 2
tanks totaling 80lt

Performance

0-100Km/h acceleration:
4.1 – 5.8S depending on idle gear set

0-400m acceleration: 11.6S

0-1000m acceleration: 24S

Max speed: 153 to 225 Km/h depending on idle
gear set

0-100Km/h
acceleration: 6.8S

0-400m acceleration: 14.2S

0-1000m acceleration: 26.4S

Max speed: 232 Km/h

Miscellaneous Group 4 dashboard, mechanical instruments. 4 point Sabelt quick-release harness, early style Group 4 lightweight
fiberglass panels.
 

Videolar:
1976 Ralli Videosu :
http://www.youtube.com/watch?v=or8hDNZm26Y&feature=player_embedded
TopGear Test Sürüşü :

http://www.youtube.com/watch?v=4hVrexfCTT0&feature=player_embedded
1970 Lancia stratos Prototip :

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