Front part of the exhaust system of a car with an SR20DE engine
1 - bolt, 13-16 Nm; 2 - nut, 45-55 Nm; 3 - bolt, 5-6.5 Nm; 4 - lambda probe, 18-24 Nm; 5 - manifold flange gaskets; 6 - nut, 42-49 Nm; 7 - bolt, 21-27 Nm; 8 - bolt, 5-7 Nm; 9 - bolt, 13-16 Nm; 10 - gasket; 11 - catalyst; 12 - heat shields
Front part of the exhaust system of a carburetor engine
1 - bolt, 13-16 Nm; 2 - nut, 44-56 Nm; 3 - bolt, 5-6.5 Nm; 4 - bolt, 5-6.5 Nm; 5 - exhaust manifold gasket; 6 - bolt, 21-27 Nm; 7 - nut, 29-34 Nm; 8 - bolts, 5-6.5 Nm; 9 - gaskets; 10 - catalyst; 11 - bolt, 13-16 Nm; 12 - heat shields
Rear part of the exhaust system
1 - bolt, 6 Nm; 2 - bolt, 13-16 Nm; 3 - rubber suspensions; 4 - nut, 13-16 Nm; 5 - bolts, 13-16 Nm; 6 - main muffler; 7 - gasket; 8 - intermediate pipe; 9 - rubber suspensions; 10 - mounting angle
Obviously, the exhaust systems of the models considered in this manual have different designs, so we will limit ourselves to describing models with a catalytic converter. On models without a catalytic converter, the latter is replaced by a muffler. In the illustrations Front part of the exhaust system of a car with an SR20DE engine and Front part of the exhaust system of a carburetor engine the front parts of the exhaust system of the injection and carburetor engines are shown illustrations the rear part of the system is shown, which, with minor differences, is almost the same for all models. However, the location and fastening of the rear part is slightly different, which you will quickly see when inspecting the installed system.
The original can be read on the website: NISSANBOOK
Using these illustrations as a guide, the following work should be performed:
1. Support the system from below to relieve the suspension.
2. Loosen the nuts on the underside of the exhaust manifold and disconnect the exhaust pipe from the manifold. Depending on the version, a single or double exhaust pipe is attached to the manifold.
3. Unscrew all heat shields from the bottom of the exhaust system.
4. Remove the nuts and bolt to detach the pipe from the metal corner.
5. Unscrew the lambda probe from the side of the exhaust pipe if we are talking about an injection engine.
6. Remove the bolts and remove the muffler hanger.
7. To remove the front section of the system, remove the nuts, remove the bolts from the top and disconnect the pipe from the catalytic converter.
8. To remove the rear part of the system, remove the nuts and loosen the rubber hangers. If you only need to remove the main muffler and/or pipe, remove the fasteners according to illustrations and unscrew the rear pipe on the connecting flange of the muffler or catalytic converter. In the version without a catalytic converter, the middle pipe is located between the main muffler and the inlet pipe and must be loosened accordingly.
9. Disassemble the system as required if the system was removed as a set and insert new parts.
10. When installing the described parts, consider the following points if the entire system is being replaced:
11. All tightening torques are shown in the accompanying illustrations.
- Always replace the gaskets between the muffler inlet pipe and the catalytic converter, the back of the catalytic converter and the rear pipe, the rear pipe and the main muffler, even if they still look satisfactory. In extreme cases, you can install an old gasket in good condition using a sealant.
- Ensure that there is sufficient clearance between the exhaust system components and other body parts.
- Screw the lambda probe into the intake pipe and tighten it with a force of 18-24 N·m. After installation, check all rubber parts. They should not be stretched, otherwise they will burst after a short period of time.
12. Install all hangers in accordance with the installation diagrams.