![]() Live rigid axle with 2 lower trailing radius arms, 2 upper trailing radius links, transverse linkage bar, coil springs, telescopic gas shock absorbers and stabiliser barįront solid discs 246/254mm diameter with 2 piston calipers 48mm diameter. 1983: B2 chassis, with plastic front/rear bumpers, plastic front, rear airofoils, and plastic side skirtsĭouble "A" unequal wishbones with coil springs, telescopic gas shock absorbers and anti roll bar 2 door coupe steel bodyshell with steel doors, steel front/rear bonnets, steel front rear bumpers. 1984: 25kg AlZnMg1 aluminium alloy (D40x3.5mm) roll cage. Steel monocoque Opel Manta B chassis with front transverse sub-frame and roll-cage. Hypoid spiral bevel gear limited slip rear differentialĭry single disc, 19E: 204mm diameter. Jacketed watercooled with pump, radiator, fan (5 blades 360mm diameter) and thermostat Natural, Bosch L-jetronic electronic multipoint fuel injection. 25 o angle between inlet/exhaust valves axis and vertical (inlet and exhaust valves are parallel) 42mm inlet valve diameter, 19E: 34mm 20E: 37mm exhaust valve diameter. ![]() Operation with rocker arms and cam followersĢ valves/cyl. Single overhead camshaft (SOHC) located between valves (not above), also called cam in head (CIH), chain driven. Aluminium alloy pistons with 45mm compression height and 22mm piston pin diameterĬylinderhead: reverse flow cast iron head with "wedge" shape combustion chambers GM Opel CIH 19E and 20E (extension 3/1E of ), straight 4 cyl, 4 stroke, petrol engineįorged steel crankshaft with 5 main bearings 58mm diameter, 52mm big end journals diameterĬonnecting rod length between centers 128mm, big end bearing tunnel diameter 55mm, small end bearing diameter 22mm, BE/SE bearings width 24,8mm, 3/8" bolts. Homologation number: 5686 and A5146 (Manta B2 GTE) The German manufacturer does not want to pay more for a Manta certainly equipped with four-wheel drive, but still too archaic compared to its Group-B competitors.1983: Opel Manta B2 20E, Opel Manta B2 GSi Specifications Service manual If it was logically better in difficult conditions, the improvement would not necessarily be obvious on other terrains.Īnyway, Opel has vetoed this project. However, its weight remained a liability, and the addition of all-wheel drive made the car less "playful" than its single-drive version. These tests would have been conclusive, the car performed better than the "basic" Manta 400 (in the snow, that's logical). Difficult to find something, but Ari Vatanen was able to try this Manta 4x4 on the snowy tracks. ![]() The very few photos available show that this car was tested in Sweden in 1983, (and well before the official debut of the classic Manta 400 in Corsica). And then, the addition of all-wheel drive increases the total weight of the car: 1200 kg, or 210 more than the rear-wheel-drive version! Two examples of this four-wheel-drive Manta 400 have been built, according to several sources. The original Getrag gearbox has also undergone transformations to adapt it to this system, the same applies to the clutch and weight distribution.Īpart from this, the modifications are still quite meagre, the bodywork has not been changed, the 4-cylinder atmo' engine has not been touched up (although some say that the power is now 300hp). ![]() Its construction would have started at the same time as that with propulsion, as for the integral transmission, Opel entrusted the development of the integral transmission to the British preparer Ferguson, who is a specialist in this type of modifications. One concerns another version of the Manta 400, and not just any. ![]() But at the same time as the Manta was built and finalized, Opel was also working on other prototypes, most certainly aware that their new machine would not be competitive against its rivals. ![]()
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