News

JBS have released a fully re-designed Stage 1 IHI underslung kit designed for all 150 & 180 Bhp 1.8 20VT for the MK4 Golf, Seat Ibiza Mk4, Audi TT & A3.

The kit boasts a full 3" stainless steel downpipe, mounted to JBS Spec VF34 Turbo and fully back purged ST316SS SC10 grade stainless steel TIG welded manifold.

This is the only stage IHI underslung Kit in the UK to have a full 3" stainless steel downpipe.

The new tubular designs concentrate more on collector efficiency and eliminating port sharing.

The manifold and downpipe have been designed in CAD to optimise the collector, flow capabilities and to enable easier fitment. The CAD process allows us to manipulate the part quickly and gather information and measurements, which would be physically impossible to do by hand.

The manifold and downpipe have then been produced directly from the CAD designs to ensure best flow, accuracy and fitment, using laser cut flanges and CNC cut collectors.

The manifolds are built with ST316 SC10 stainless steel runners and cold rolled mild steel flanges, to protect against the higher exhaust gas temperatures.

This Kit can easily provide power outputs of: 300-350bhp.

Our 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, we 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 we even had a physical manifold in our hand.

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

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

• Fabricated from 316  Grade stainless steel and Cold rolled mild steel flange.
• 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.

The same designs process is carried over into all our 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. Our 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
• Horsepower range from 300BHP to 400BHP
• Reliable under the most demanding conditions

For more information about the JBS IHI STAGE 1 For all 150 & 180 BHP 1.8 20VT please click here.