How to Remove a Nissan S15 Silvia Exhaust from Turbo Back - Part 3

Part 3 - Removal of the Dump Pipe

The dump pipe connects to the turbo by 3 bolts and 2 nuts. It is rather "fiddly" to remove, but not particularly difficult. You need to remove a few components to access it.

The above image you will only need to worry about the blow-by hose (1), heat shield (11) and dump pipe (13). We will refer to this later.

First, remove the heat shield from the manifold along with the O2 sensor. I'd suggest removing the blow-by hose. The below picture doesn't show it but I completely removed the hose as it made it difficult to access the bolts and sensor (just use a pair of pliers to squeeze the clamp off the top and bottom).

The heat shield has four bolts on the top and one on the side near the ABS system. Be cautious, I broke off a bolt in removing the heat shield (I couldn't remove it despite my efforts with easy-outs).

You will need to use the 22mm O2 sensor socket for this step. Depending on the age of your O2 sensor, you may wish to replace for approx $100.

Begin to loosen the bolts/nuts around the turbo/dump pipe. You may need to be inventive with the spanner and socket set you use. I used a ratcheting spanner and a combination of sockets and adaptors/joints.

The above picture is from underneath the car. There is another heat shield that needs to be removed along with the nuts/bolts that hold the dump pipe to the turbo.

After the dump pipe is removed, clean up the area, add a new gasket and fit it all back together.

Fit the new dump pipe to the turbo, put on one or two nuts (loosely) then while supporting the dump pipe (as not to put the full weight of it on the turbo) you will need to shift backwards and fix the bracket to the car. The easiest way I found was to attach the bracket first and then you only have one bolt to attach.

Then slowly tighten all the nuts and bolts, in an opposing fashion to give an even fixture onto the turbo and bracket.

Now it is just a simple process of adding the cat and muffler (opposite as you took them out) and tightening up some bolts, and you're done.

Thanks for reading, any questions please feel free to leave as a comment below.