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My
Stratos HF Group 4
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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
11.4:1. Ported 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
2:2.24 – 78.99 or 98.74 or 115.92 Km/h
3:1.762 – 100.43
or
125.73
or 147.37 Km/h
4:1.417 – 124.88
or
156.1
or 183.25 Km/h
5:1.154 – 153.34 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 carriers, Group 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
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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
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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 calipers, Pagid
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
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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
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0-100Km/h
acceleration: 6.8S
0-400m acceleration: 14.2S
0-1000m acceleration: 26.4S
Max speed: 232 Km/h
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Miscellaneous |
Group 4 dashboard, mechanical instruments. 4 point Sabelt quick-release harness, early style Group 4 lightweight
fiberglass panels. |
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