Posts Tagged ‘ Garrett ’

Astra VXR GTx3076R Development…… 559bhp & Video

Further Development of this car has seen us change the turbo to a Garret GTx3076R along with a custom made 100mm diameter inlet pipe.

Target BHP was something on the right side of 500 BHP. With 99 octane UK pump fuel we saw 525 BHP but this was on the limit of our UK fuel quality; Stephan in Germany had seen well over 550 BHP with this turbo on 102 ocatane pump fuel available to them.

At this point we thought it might be fun to add some methanol to bring the octane value up; a stainless tank was fabricated and installed with an Aquamist pump in the spare wheel well, to sit alongside the already installed swirl pot and Pierburg pump.  The spare wheel well has had a number of vents installed and a laser cut acrylic panel made and installed to protect the contents and seal the wheel well off from the car’s interior. With further mapping mostly based around a much more efficient timing curve we saw the power rise to a peak of 568 BHP and finally settled with a comfortable figure of 559 BHP.

Final testing on the road proved very interesting and memorable for Mark R when he found some additional work was needed to stop the meth from puddling in the inlet manifold, which occurred on part throttle when the throttle was being feathered due to wheel spin! Fortunately the functionality and adjustability of the Aquamist ECU made this quite straight forward to achieve.

Engine Spec features numerous Courtenay core products as follows:

Ported Cylinder head
Forged Pistons
Steel Rods
Klasen Cams
Klasen Inlet Manifold
V Band Cast Manifold
Tial External Wastegate
Custom 3” front pipe mated to a Piper 3” exhaust System
GTx3076R Turbo with Tial Exhaust Housing & 100mm inlet
Courtenay Intercooler
Courtenay Water Radiator
Lightened Flywheel
Paddle Clutch plate
Reworked Sach’s Uprated Clutch Cover

To name but a few items…

Hopefully this should keep the ever power hungry Wayne T content for a while. :) A thoroughly enjoyable conversion to do cheers Wayne…

Spare Wheel Well with Swirl Pot, Pierburg Pump and Aquamist Pump and Methanol Tank.

Spare Wheel Well with Swirl Pot, Pierburg High Pressure Pump, Aquamist Pump and Methanol Tank

Laser Cut Acrylic Spare Wheel Well Cover

Laser Cut Acrylic Spare Wheel Well Cover

479bhp Courtenay Astra VXR Total Vauxhall Article

Last month’s Total Vauxhall saw a fantastic 8 page feature on Wayne’s 479bhp Courtenay modified Astra VXR. The spec and cover are a few posts down on our blog.

For those of you who missed it, here is the article in full. For those who didn’t relive it again!!

Just click on the image below to open up a pdf file of the original article (you will need a pdf reader installed to view).

Astra VXR Garrett GT3071 Video


Courtenay Sport Garrett Conversion. The brief was to achieve 420bhp with Garrett GT3071 turbo, tubular manifold, 76mm exhaust, 80mm air flow meter, 630cc injectors and Courtenay Sport Full Height Intercooler. The 80mm Astra VXR is maxxed out at around 420bhp so the achieved figure was the best achievable using the given components.

700bhp Klasen Speedster Turbo Video

Klasen Motors 700bhp Speedster (VX220) Turbo.

Another big power turbo conversion using the new V Band Cast Manifold.

V Band Cast Manifold Garrett GT3076 Astra VXR Video


Astra VXR with V Band Cast Manifold, External Wastegate, Garrett GT3076 Turbo, Courtenay Sport Full Height VXR Intercooler, Courtenay Sport High FLow Inlet Manifold, Full 76mm Exhaust System, 90mm Air Flow Meter, Steel Road, Factory ECU (Bosch 7.6.3 management) bespoke mapped by Courtenay Sport

New V Band Cast Manifold Astra VXR Conversion

For this conversion using our new V Band Cast Manifold the brief from our customer was as close to 500bhp as possible but with usable power. We opted for a Garrett GT3076 turbocharger. The car also has our full height VXR intercooler, steel rods, Courtenay Sport High Flow Inlet Manifold and 76mm full exhaust system.

V Band Cast Manifold Astra VXR

V Band Cast Manifold Astra VXR

V Band Cast Manifold with GT3076

V Band Cast Manifold with GT3076

And finally the all important Power Graph:

Astra VXR Power Graph

Astra VXR Power Graph

New V Band Cast Manifold VX220 Turbo Conversion

Following the introduction of our V Band Cast Manifold with external wastegate, here is an example of afinished conversions and graph on a VX220 Turbo.

The manifold has been flow tested to 600bhp and the Tial V Band flanges are much more secure and allow for easier turbo fitment.

V Band Cast Manifold VX220Turbo

V Band Cast Manifold fitted to VX220Turbo

V Band Cast Manifold VX220Turbo

V Band Cast Manifold fitted to VX220Turbo

The VX220Turbo with this V Band Garrett Conversion and GT2871 has also had a full engine rebuild and has had a full 3″ exhaust system and chargecooler system fitted, 80mm air flow meter, high flow injectors, uprated map sensor and uprated clutch and flywheel.

The build spec was for up to 400bhp, the final power output was 398bhp.

VX220 Turbo Power Graph

VX220 Turbo Power Graph

VX220 Turbo 360bhp Garrett Build Video

Courtenay Sport VX220 Turbo with a bespoke Garrett Build, strengthened rebuilt engine, Pro Alloy Chargecooler, full 3 inch exhaust system and full Z20LET engine management mapped by Courtenay Sport….. 360bhp

The Courtenay Sport Blog

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