Mazda Savanna RX7 SA22C group 2 (1979)
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Group B
Group 2

Also called Mazda RX7 FB as series 2 model from 1981 and on

Specifications

Group/Class 2 and A/8 Homologation number: 5713 and A5195
Years active 1978-1983 Homologation start: 1/8/1978 and 1/2/1984
Homologation end: 1/1/1982 and 31/12/1987
Engine
Type Mazda 12A RE, 2 rotors, 2 node 3 lobe type Wankel petrol engine located front longitudinal
Capacity 1146 cc WRC: x 2 = 2292 cc
Trochoid (mm) length of major axis 120, length of minor axis 90mm, width 70mm, trochoid radius 105mm, eccentricity 15mm
Compression ratio 9.4:1, 11.0:1
Output power - torgue
Main bearings 3 of 43mm diameter rotor eccentric bearing 74mm diameter
Materials side housing: cast iron rotor housing: aluminium alloy rotor material: cast iron
Ports 4 lateral inlet ports, 23mm width, located in outer side housings 2 peripheral exhaust ports, 41mm width, located in central side housing
Aspiration natural, 1 x NIKKI 210284-571 4 barrel down draft carburetor. 1980: 1 x NIKKI 210284-611 or 210284-601 or 210284-621 carburetor
Ignition electronic with 2 spark plugs per rotor and 2 ignition coils. 12V battery
Cooling system jacketed watercooled with pump, radiator, 410mm diameter-7 blades fan and thermostat 9.5 lt
Lubrication system wet sump with 1 oil cooler. 1981, group 2: dry sump 5.2 lt
Transmission
Type rear wheel drive 5 speed manual gearbox, or JATCO 3 speed automatic gearbox
Gearbox ratios constant: 1.706/1 (29/17)
1st: 3.674/1 (28/13)
2nd: 2.218/1 (26/20)
3rd: 1.433/1 (21/25)
4th: 1.000/1 (-)
5th: 0.825/1 (15/31)
R: 3.540/1 (27/13)
constant: 1.091/1 (24/22)
1st: 2.350/1 (28/13)
2nd: 1.697/1 (28/18)
1981: 2nd: 1.608/1 (28/19)
3rd: 1.289/1 (26/22)
3rd: 1.240/1 (25/22), 1981+
4th: 1.000/1 (-)
5th: 0.881/1 (21/26)
R: 2.266/1 (27/13)
automatic, 1st: 2.45/1
2nd: 1.45/1
3rd: 1.00/1
R: 2.18/1
Diffrential ratio from 3.63/1 (40/11), 3.72/1 (41/11), 3.90/1 (43/11), 4.10/1 (41/10), 4.37/1 (35/8), 4.44/1 (40/9), 4.62/1 (37/8), 4.87/1 (39/8). 1981+: 5.12/1 (41/8) hypoid bevel gears limited slip rear differential
Clutch dry, single disk 270mm diameter
Chassis-body
Type Steel monocoque Toyo Koyo SA22C chassis with roll-cage. 2 door coupe steel bodyshell with steel bumbers. 1979+: front and rear plastic spoilers
Front suspension macpherson struts with lower arms, coil springs, telescopic gas shock absorbers and anti roll bar
Rear suspension live axle with two trailing and two upper 45o links, watt's linkage, coil springs and telescopic gas shock absorbers
Steering system Recirculating ball (no servo)
Brakes front ventilated discs with 1 piston caliper 50.8mm diameter, rear drum 200mm with 1 double piston caliper 17.5mm diameter. (1980+: 228mm) diameter. 1979+: rear solid disks with 1 piston caliper 34.9mm diameter dual circuit with vacuum servo
Dimensions
length: 4.285 m (168.7") width: 1.648 m (64.9") height: 1.390 m (54.7")
wheelbase: 2.420 m (95.3") front track: 1.510m (59.4") rear track: 1.500 m (59.1")
Rims - tires 5 JJ x 13", 15"
Weight 925 kg
Fuel tank 55 lt
Drag coefficient 0.36, or 0.38 with headlights exposed

Results in WRC

Races

Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN GRE N.Z FIN C.Q S.R TdC
Entry list
RAC
Entry list
CdI
H. Nakagawa
Osam Morikawa
73rd
Nagashima
Okanami
dnf
Shinya Yamauchi
Hagemu Yamaguchi
dnf
Shigeo Kaneko
Masanari Funakoshi
Mazda Sports gear box
Kazuo Soma
Koichi Iida
Mazda Sports CC gear box
Hidekazu Fujinuma
Hiroshi Kubo
Mazda Sports CC 70th
Statistics
Others starts/finishes 6/2 1/1 1/0 4/1

1981+26+A_550.jpg Source
Rod Millen in RAC '81
1979_Mazda_RX7SavannaSeriesI1.jpg Source
FA model '78
former_0036l.jpg Source
FB model '81

Drawings

mazda-savanna-rx-7-sa22c.gif Source
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