Astra H VXR

Astra H VXR

The Astra H VXR engine (Z20LEH) is a development of the Astra G’s Z20LET power unit. Rather than simply diving straight in with remaps, we stripped an engine down to component form to examine its internals and get a real feel for what has been done. One of the main differences is the block has been equipped with oil spray jets. These jets cool the pistons by spraying oil at the underside of the piston. These oil spray jets were added for manufacturer's durability reasons because the LEH engine produces 240PS as standard (where the LET engine only produced 200PS), and not because, contrary to internet myth, the factory Z20LEH engine runs lean. In fact the Z20LEL and Z20LER engines used in Astra H run at the same target lambda value from the factory as the Z20LEH engine, and the LEL/LER engines do not have under piston cooling.

The pistons themselves are high yield forged items with the skirts Teflon coated to reduce noise and wear. Gone are the Z20LET’s counter rotating balancer shafts. This sharpens response whilst helping the engine rev much more quickly. At the top end the inlet manifold is revised however this revision is across the whole of the MK5 engine range, the VXR though getting new larger injectors. The turbo charger is a hybrid item, equipped with a better A/R ratio and stronger bearings. The manifold it has been built into is cast in a higher yield of material making it less prone to cracking. This turbo unit has been available for a while now from Vauxhall and we have already used many times on the Astra G and the VX220 with good results.

Once we had established the above we then under took mapping our first VXR. The results are very good, however we could not take the car any further than this on the standard intercooler. So extensive cooling modifications were investigated and developed for the next level of power, to ensure the longevity of the engine and surrounding components.

 

Please Choose From The Product Categories Listed Below:

Direct Replacement Standard Size Alloy Bottom Pulley for 2.0 Turbo Petrol Engines Z20LET/Z20LEL/Z20L..
£104.00
Ex Tax: £86.67
Vacuum Store used on several Vauxhall/Opel 2.0 Turbo applications.Z20LEx - Z20LEL Z20LER Z20LET Z20L..
£24.00
Ex Tax: £20.00
ALL TURBO'S ARE SOLD ON AN EXCHANGE BASIS ONLY, THIS MEANS WE WILL REQUIRE YOUR OLD UNIT. ..
£1,110.00
Ex Tax: £925.00
Courtenay Sport Lower Front Mounted Intercooler Kit Application:Astra G 2.0 Turbo SRi/GSi inclu..
£1,050.00
Ex Tax: £875.00
90mm Intake kit for Z2.0 front wheel drive petrol turbo engines. Designed for high power installatio..
£175.00
Ex Tax: £145.83
One Way (Non Return) Crankcase Breather Valve used on Z20LET and C20LET engines.  90423045Fitte..
£24.00
Ex Tax: £20.00
The Best Plugs to use for 1.6 Turbo (Z16LEx/A16LEx/B16LER) and 2.0 Turbo (Z20LEx Family) engines, an..
£12.00
Ex Tax: £10.00
Genuine OE Vauxhall/Opel Valve Stem Oil Seal.Vauxhall/Opel Part Number: 90410741For the Z20LEx famil..
£1.50
Ex Tax: £1.25
Shim for M32 Late Type End Case.To ensure correct shimming of the gearbox when fitting the later end..
£2.40
Ex Tax: £2.00
Uprated Exhaust Mount manufactured from a high temperature polyurethane material in red with a Shore..
£14.22
Ex Tax: £11.85
Laser Iridium NGK manufactured Spark Plugs for 2.0 Turbo A20NFT[LHU] A..
£16.50
Ex Tax: £13.75
Please note price is per plug so add 4 to your basket for a set.HKS Iridium Spark plug for the Hyund..
£18.60
Ex Tax: £15.50
Hyundai i30N LUK duel mass flywheel direct replacement flywheel that fits both Gen1 & Gen 2 Manu..
£359.60
Ex Tax: £299.67
Our Hybrid turbo for the i20N feature's a larger billet compressor wheel, uprated bearing pack with ..
£1,434.00
Ex Tax: £1,195.00
Cam Cover Gaskets Astra J - GTC VXR A20NFT & Insignia Turbo A20NFT  Also fits Insignia 2.0 ..
£19.94
Ex Tax: £16.62
Vauxhall Opel Radiator Hose Outlet Astra & Zafira 2.0 turbo Z20LEL & Z20LER ..
£32.65
Ex Tax: £27.21
Remus Exhaust Hyundai i30N Hatchback GPF Back System Face Lift (Gen2) New Available to Order
Remus GPF Back 76mm (3") Exhaust Exhaust System for the Generation 2 / facelift Hyundai i30N hatchba..
£2,162.48
Ex Tax: £1,802.07
Insignia VXR Haldex Service Kit.It is recommended that the Insignia VXR Haldex unit should be servic..
£74.95
Ex Tax: £62.46