Note. Unlike the VAZ 21124 engine (1,6i) (see more details. "Features exhaust system") on the VAZ 2112 engine (1,5i) Cast iron exhaust manifold installed (2). It is fixed to the cylinder head with nuts on eight studs. A two-layer metal gasket is installed between the inlet flange of the collector and the mating plane of the head. The top of the exhaust manifold is covered with a metal screen (4). The screen is mounted on the exhaust manifold and secured with three nuts (1) on stilettos. From below, the collector is connected to the exhaust pipe (see "Exhaust system").
For removal and installation of the exhaust manifold of the engine 2112 (1,5i) you will need a viewing hole or overpass, a jack.
Removing
1. We process the threaded connections of the exhaust manifold with a penetrating lubricant.
2. Remove the exhaust pipe muffler (see "Downpipe engine 2112 (1,5i) - removal and installation").
3. Using a 13 mm socket wrench, unscrew the three nuts securing the protective screen and remove the protective screen.
4. Using a 13 mm socket wrench, unscrew the two nuts securing the bracket for the coolant pump inlet pipe and remove the bracket.
5. Using a 13 mm socket wrench, unscrew the eight fastening nuts and remove the exhaust manifold from the studs (see point 9 "Engine Manifold Catalyst 21124 (1,6i) - removal, installation, replacement").
6. Remove the exhaust manifold gasket from the studs (see point 15 "Engine Manifold Catalyst 21124 (1,6i) - removal, installation, replacement").
Installation
We install all the removed parts on the car in reverse order. Replace the exhaust manifold gasket with a new one. The tightening torque of the exhaust manifold mounting nuts is 24.5-25.8 Nm (2.5-2.6 kgf-m).