VW1.8Tt 20v under-slung IHI - JBS

JBS IHI Stage 1 and 2 Collector Manifold Kit

The JBS IHI Turbo Kit with Collector Manifold is there cutting-edge turbo upgrade for your 1.8 20 VT. At JBS they worked long and hard to bring you the finest 1.8T upgrade available. All there kits are made with the best materials and engineering available, from the exhaust manifold to the hose clamps. The JBS IHI Collector Manifold Kit is offered with 300-350Bhp .



JBS's IHI Turbo Kit with Collector Manifold consists of the following components:

JBS Tubular Exhaust Manifold
IHI Turbocharger
JBS Downpipe
JBS High Flow Catalytic Converter
JBS Custom boost hoses
JBS High Flow Fuel Injectors
All Associate Plumbing and Hardware

The most important part of the IHI stage 1 Turbo Kit is the exhaust manifold. JBS has spent enormous time and resources developing the turbo manifold. The exhaust manifold has been designed in the best CAD packages availiable, for 3-D modeling and CFD analysis. By performing a computational fluid dynamics analysis, they were able to study exhaust flow, pressure drops, and fluid flow through the exhaust manifold. Multiple computer simulations were done to prove the design before they even had a physical manifold in our hand.

This stage 1 collector manifold has been design to be produced in both cast and tubular format.

The IHI tubular manifold design, like all JBS designed manifolds is:

Fabricated from 321 and 409 Gradestainless steel
Inside diameter 34mm for better overall power band
Precision TIG welded for maximum strength and liveability
Cutting and separating the head flange insure unbreakable construction
The laser cut head flange are machined ensures sealed surfaces
CNC cut collector to ensure accuracy
The collector is welded inside and out which further prevents cracks.

Once the manifolds have fully passed the computer simulations they had the cast exhaust manifold CAD model transferred to a SLS rapid prototyping machine. A nylon resin exhaust manifold was cast from the prototyping machine. With this plastic manifold they were able to mock everything up in the test vehicle before proceeding to the next process.

JBS has chosen to cast its manifolds in a very high quality foundry which is used by many OEM turbo suppliers and OEM vehicle manufacturers to ensure the castings are of the highest quality.

Also to reflect the high quality casting; JBS has spent a great deal of time researching the latest high temperature resistant cast steels These cast steels have a high nickel content, having the following properties makes them ideal for our performance manifolds: resistance to corrosion, resistance to oxidisation and high temperatures (up to 1050 oC), resistance to wear and erosion.

resistance to corrosion,
resistance to oxidisation
high temperatures,
resistance to wear and erosion.
This is to ensure a minimal amount of thermal expansion and an equal rate of thermal expansion to the turbo housing, this again minimises the potential for thermal fatigue (cracking). The bolts for the fitment of the turbo to the manifold shall be supplied as they are a specific size and material to prevent stretching which leads to blowing gaskets.

The same designs process is carried over into all of there turbo kit components. The turbo out, TIP and boost pipes have all been design, flow tested and prototype using CAD, to give the best possible performance. there Boost pipes are available in silicone or stainless steel.

For the JBS stage 1 IHI turbo kits, custom built IHI turbos are used. The turbos are selected for best power output and compatibility with the other components of the turbo kit.

Turbo Technical Specification:

• High horsepower & torque with low lag
• Different pressure wastegate actuators available
• Horsepower range from 300BHP to 400BHP
• Reliable under the most demanding conditions

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