Zafira B VXR

Zafira B VXR

The Zafira B VXR engine (Z20LEH) is a development of the Zafira A GSi 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 Z20LER engine used in Zafira B 2.0 Turbo SRi runs at the same target lambda value from the factory as the Z20LEH engine, and the Z20LER engine does not have under piston cooling.

The Z20LEH 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 Zafira A, 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 Note: Plugs are listed individually.The Best Plugs to use for 1.6 Turbo (Z16LEx/A16LEx/B16LER..
£8.25
Ex Tax: £6.88
Uprated Exhaust Mount manufactured from a high temperature polyurethane material in red with a Shore..
£7.20
Ex Tax: £6.00
Straight Rubber Vacuum Joiner (Vacuum Union / Vacuum Fitting), suitable for may uses around an engin..
£1.30
Ex Tax: £1.08
Genuine Vauxhall/Opel Clutch Cover to Flywheel Bolt for Z20LEH, Z20LEL, Z20LER 2.0 Turbo Turbo engin..
£0.60
Ex Tax: £0.50
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
Flywheel Retaining bolt M10x25Z20LET Z22SE and X20XEV EnginesSix Required Per Car..
£1.20
Ex Tax: £1.00
Spec: 5/16" x 1.5" UHL ARP2000 Bolt. Material ARP2000ARP Rod Bolt for PEC replacement steel rod sets..
£72.00
Ex Tax: £60.00
Genuine Vauxhall/Opel Turbocharger Recirculation / Electronic Diverter Valve. Also known as Turbocha..
£114.00
Ex Tax: £95.00
Genuine OE Vauxhall/Opel Crank Sensor.For ALL 2.0 Turbo Z20LEx engines - Z20LET / Z20LEL / Z20LER / ..
£36.00
Ex Tax: £30.00
Complete Genuine Vauxhall / Opel Air Cleaner Assembly / AirboxBRAND NEW ITEM. Includes Airbox Base, ..
£117.00 £48.00
Ex Tax: £40.00
BRAND NEW Old Stock EBC GD 308mm Brake DiscsLast Pair - Finished Anodised in Gold. Previous EBC Spec..
£210.23 £172.50
Ex Tax: £143.75
De-Cat Downpipe/Front Pipe. Removes first catalytic converter.For 1.4 Turbo - Corsa D 1.4T Black Edi..
£207.90
Ex Tax: £173.25