For use with the K04 / K06 style turbos.

The standard turbo oil drain hose has always been a weak link in Z20 engines.

This upgraded hose includes an uprated oil seal that is less prone to leaks and more robust.

Astra K03/K04 Turbo flange- this flange will not fit the corsa VXR K03 

Suitable for welding to 3" TUBE 

Internally profiled for best possible flow out of the turbine area. 

Made from  304 S/S  

Fits KO3/KO4/KO6 Astra Turbo and retains the use of the standard exhaust clamp. 

Convenient for when making new downpipe.

Garrett Turbo Oil / Water fitting kit

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Vauxhall / Opel Z20 Engines

 Designed for hassle free installation of Garrett turbo to a Z20 engine. 

This kit should hopefully save you the bother of sourcing all necessary parts for fitting. The same as we use in house we have come to find these parts reliable for all Garrett GT / GTX  28 - 30 - 35 Turbos.

Featuring billett CNC machined turbo fitting, temperature resistant silicone hose and a braided oil feed line rated far beyond the turbos oil feed pressure, these among other things ensure you are using the best equipment for your build. 

4 Bar Bosch MAP/Boost sensor with built in temperature probe

Direct fit replacement upgrade for the Astra G & H Turbo's and Corsa D VxR. Allows you to safely run upto 3 Bar (43.51 Psi) of boost pressure (4 Bar absolute).

Will require your ecu's sensor input to be re-scaled to suit (You'll need a re-map), we can offer this service for an additional charge.

Features a built in fast acting temperature probe, sensor is designed specifically for turbo applications.

We can source the plug and pins for this if you wished to utilise one in a standalone ECU application, and we can also supply 3 bar versions (2 bar boost).

GBT V Band turbine Inlet clamp

This is the clamp for between the manifold and turbine housing to suit the Owen Developments GBT turbos - It will also fit a Garrett or Tial application too – these are about the best clamps going and its what you will find on our turbo kits.

GBT V Band turbine Outlet clamp

This is the clamp for between the turbine housing and downpipe to suit the Owen Developments GBT turbos - It will also fit a Garrett or Tial application too – these are about the best clamps going and its what you will find on our turbo kits.

Turbosmart Gen V waste gate Astra VXR water cooling pack

A lot of the new waste gates come with water cooling but its not always used , usually through being difficult to connect into the system . Included in this kit are all the parts to install the Turbosmart Gen V waste gate to the Astra VXR type engine cooling setup.

Running the water cooling on the waste gate keeps the boost more constant , less error for the control to deal with to account for the difference in spring force due to heat. Cooling them keeps the boost more consistent over a longer run.

This kit is an optional upgrade to our GBT turbo kit , it is designed to work with the coolant hoses being tied down over the top of the radiator – this is a much better place for them in most cases. Even more so on a big turbo setup

When we install this kit in house we will often crimp the hoses to ensure nothing can come loose , jubilees are fine for use so are supplied in this kit as they are easier to work with for DIY install.

To work with Nortech manifold and the Turbosmart Gen V waste gate

Included ,

-Adaptor for coolant line ,

-fittings and line to waste gate ,

-fitting and short hose out of waste gate

-additional 8mm T piece

-4 x jubilee clips ( T piece + waste gate outlet )

Z20Le* 470 HP V band turbo bolt on kit

Producing a full turbo kit that is reliable , fits well and delivers the power in the most brutal but also controllable way is something we have spent a long time testing, years have gone by in getting to where we are now.

We have always liked the Owen developments turbo units , outright power , response and cost all balanced out well. They provide high end turbos and we are looking for high performance boost , its natural we start with one of their own new turbo units.

The GBT turbo is the end result of thousands of hours of testing, we ourselves used the older HTA hybrid versions with excellent results. The GBT series has given Owen developments the chance to improve all the areas that needed changing for the better.

With this turbo and the right supporting parts we can make 500HP and 500 LBS of torque – this is the absolute most you can run but they will go there if you need to win ! We advertise this as a 470 rated setup as that is the number we know it can run all day long , run harder for short periods we have seen no increased fail rate, still non at all.

The manifold is a big part of the setup , having a poorly designed manifold can ruin any performance turbos character fast. This kit features the best manifold that we have known for the Z20 series engines. Supplied and manufactured in the UK by Nortech performance, these feature the best materials and best welding procedures to make an all round solid performance manifold.

Our choice of waste gate for this kit is the Turbosmart GEN V hypergate - we find that this wast gate with the water cooling plumbed in makes for the most reliable consistent boost for the pricing.

The downpipe exhaust system is also manufactured by Nortech Performance , these are full 76mm diameter mandrel bent system components with a very high grade flexi joint. These again will cope with 600HP on the right turbo setup !

Hardware and fixings , this is a collection of many kit parts that we have made up. Every component has been selected tested , revised in some cases and this is the end result . A collection of parts that work perfectly together.

In this kit there is everything you require to physically install a full turbo kit to your car. Your exhaust system may need some minor alterations , we also sell extension pipes which will slip fit into a piper exhaust system.

The inlet system is designed to be run without the AFM sensor – not all tuners are happy to do this on the stock ecu so please contact your tuner in advance of buying this kit. If its ourselves then we believe that removing the AFM at this kind of power is the best way . If you are planning on running a standalone ecu then this turbo kit again has everything you need to fit the whole kit

This is a serious turbo kit , it will produce serious power with the right supporting parts . These are the minimum recommended parts that we would suggest to run this kind of power

3” / 76mm Cat back exhaust system

Airtec stage 2 intercooler system

Catcams Fast Road cams

Catcams Single uprated springs

1000 CC injectors

3 or 4 bar boost pressure sensor

Fuel surge tank system

Upgrade inlet manifold - Klassen

Forged LET / Rod swapped LEH

Upgrade clutch and flywheel

To run more along the line of the 500LBS and 500 HP then the cylinder head must be ported out , on the stock camshafts then this setup will make around the 460 HP and 400 LBS of torque without being too stressed. All round this kit is the perfect choice in most instances , a lot of people probably buy a bigger turbo thinking its necessary when really a more responsive but still potent unit is faster overall.