STAGE 10

Return to the BUILD


“In this issue, we start to assemble the turbo system of our Nissan GT-R. We will attach the air inlet and exhaust outlet ducts, as well as the turbo drive valves, compressors, and turbine casings.”

 

Contents


Parts

Materials: All of these parts are plastic.

Magazine

  • Nissan Skyline GT-R: The RB23DETT Engine – A Nissan Masterpiece
  • Fast & Furious Tales: Roman Pearce
  • The NISMO Story: The All Japan Championship Rally Series (Part 1: Domestic Racing in the Early 1980s)
  • Nissan Sport DNA Collection: Elegant New Model Based on the Fairlady
  • Assembly Guide: Model Instructions

Build


Turbo System (1)

NOTE: As the Turbo mounting points are delicate, I have changed the order of these steps from the magazines to save that step for the end of the stage.

Step 10.01

Retrieve your Engine assembly from Stage 6. Fit the pin and shallow posts of a Exhaust Manifold to this matching forward location on the left side of the Cylinder Head, as shown.

Both Exhaust Manifolds are the same, so either can be used here:

Secure this Manifold into place with two (2) KM screws.

This is your friendly reminder to try using 3-in-One Oil on all screw threads going into metal:

Repeat this process to install the second (rear) Exhaust Manifold next to the first with two (2) more KM screws:

Step 10.02

Slide the keyed hole of a Compressor Housing 2 over the matching post of a Compressor Housing 1, orienting it as shown.

The Compressor Housing 2 parts are identical, as are the Compressor Housing 1 parts – either can be used here:

Repeat this process to assemble the second Compressor Housing in the same way:

Step 10.03

Fit the keyed hole of a Turbine Casing to the matching post of a Compressor Housing assembly, orienting the parts as shown.

Both Turbine Casings are the same, so either can be used here:

Secure the Compressor Housing to the Turbine Casing with one (1) CP screw:

Repeat this process to attach the other Compressor Housing to the second Turbine Casing with one (1) more CP screw.

NOTE: I did not grab a picture of the two Turbo assemblies together, but they should look exactly the same at this point.

Step 10.04

Fit the triangular end of the Exhaust Outlet 2 to one of the Turbine Casings, as shown.

NOTE: The two Exhaust Outlet pipes are a darker grey color than the others. The Exhaust Outlet 2 we need in this step is the shorter of the two.

To orient these properly, there is a small raised section of the Exhaust Outlet flange that matches a recess inside the Turbine Casing:

Secure this Exhaust Outlet 2 into place with three (3) KP screws:

Step 10.05

Secure the D-shaped end of the Exhaust Outlet 1 into the matching recess of the Turbine Outlet Elbow with one (1) KP screw, as shown.

This Exhaust Outlet 1 is the other darker grey pipe in the parts set:

Step 10.06

Fit the triangular end of the Exhaust Outlet 1 to the remaining Turbine Casing, as shown.

To orient these properly, there is a small raised section of the Exhaust Outlet flange that matches a recess inside the Turbine Casing:

Step 10.07

Secure this Exhaust Outlet 1 into place with three (3) KP screws:

The Turbo Drive Valves
Step 10.08

Press the large pin of a Turbo Drive Valve into the matching hole of a Compressor Housing, then pit the small pin into the matching recess of the Turbine Casing, as shown:

I chose to use a small drop of super glue to keep the rear pin secured in the recess on these:

Repeat this process to install the other Turbo Drive Valve into the second Turbo assembly, as shown:

We now have our two Turbo assemblies completed. Note which one is the front and which one is the rear, as shown here:

Front Turbo
Step 10.9

Insert the wide post end of the Air Inlet Duct 3 into the mouth of the Compressor Housing, completing our front Turbo as shown.

This post is round so the angle of this pipe can be adjusted later on:

Step 10.10

Fit the Compressor Housing section of the front Turbo assembly to the bottom of the front Exhaust Manifold.

There are small offset alignment holes in the mounting plates of these Turbo assemblies:

This hole needs to be fitted onto the matching locating pin on the bottom of the front Manifold, as shown:

Align the screw holes and secure the Compressor Housing to the front Manifold from above with one (1) AP screw.

Note how the Turbo assembly sits at a slight angle to the engine block:

Rear Turbo
Step 10.11

Fit the D-shaped post of the Air Inlet Duct 1 into the matching hole of the Air Inlet Duct 2, as shown:

Press the pin of the Air Flowmeter into the matching hole of Duct 2, orienting it as shown:

Step 10.12

Press the curved end of the Inlet Duct assembly into the large mouth of the rear Compressor Housing, as shown.

This is also just a press-fit so it has some adjustability for later stages in the build:

Step 10.13

Fit the Compressor Housing section of this rear Turbo assembly to the bottom of the rear Exhaust Manifold, orienting it as shown.

As before, there is a small locating pin on the bottom of the Manifold that fits into the offset hole on the top of the Compressor:

Secure the Manifold to the Compressor Housing from above with one (1) AP screw:

Step 10.14

Gently press the two pins of each Exhaust Manifold Covers into the matching holes on top of each Exhaust Manifold, as shown:

Thoughts


That was a lot of fun to build the Turbos of our R34 Skyline GT-R 1:8 scale model! On the real car, these would have been HKS 2540 turbos with matching downpipes and exhaust. Keep an eye on the two inlet pipes as they are only press-fit (and need to be so they can be aligned to the air box in later stages).

Next Up


Stage 11 – Fuel Rail, Oil Plug, Crankcase Connectors, Ornament, Steering Pump, Camshaft Sensor, Brackets, AC Compressor, Fittings