Tuning Packages for 1.8 16v Engines

Tuning Packages for 2.0 XEV engines

Astra G/Vectra B 2.2 16v Tuning Packages

Courtenay Sport Air Filter

There are so many 'high performance' air filters on the market that it's difficult to know which one to choose. We have taken the guesswork out of it by producing our own - specially designed to work best with Vauxhall/Opel applications! Our high flow, high efficiency air filter uses a special foam which gives better airflow than even the most popular cotton gauze aftermarket filters. Our filters offer the very highest level of dirt retention and protection (of course! after all we're engine builders!) and you can clean it and reuse it just like most other performance filters.

Each filter is supplied pre-oiled and ready for first use. For cleaning, simply wash out the underside of the filter using warm water and washing up liquid until clean, rinse through from the top to the bottom of the filter, allow to dry and lightly re-oil before re-fitting. Filter oil is available seperately for subsequent re-oiling after cleaning. To fit most Vauxhall models from Astra to Zafira. Priced at £34.95  Filter Oil £4.05

Courtenay Sport Cylinder Heads

Courtenay have been performance tuning Vauxhalls since 1984. The feature that sets Courtenay's work apart, however, is that it has always been intended for road use from the beginning rather than being competition derived technology transferred directly to the road. Road cars need torque across the 2000-5000rpm range (where we do 95% of our driving) more than they need top-end brake horsepower at 6000-7000rpm (where we hardly ever go). Race drivers are only interested in top-end power and will accept a lack of torque in the mid range as a necessary consequence of maximising horsepower.

So we believe that if we really are to do the best job for you as a Road Engine Tuner we should concentrate on the mid range torque as priority and accept as much - or as little - extra top-end brake horsepower (at zillions of rpm!) as we can get at the same time.

Courtenay Sport cylinder heads are offered on an exchange basis (subject to a returnable deposit, of course) for the more popular applications or otherwise we will rework your own head for you, which many of our customers prefer. They may either be fitted in our own workshops or supplied by mail order. We do not call our heads "Stage 1" or "Stage 2" since this is quite meaningless: rather, we prefer to call them by the level of benefit they offer.

CS 10 Heads

CS 10 Head Prices

CS 15 Heads

CS 15 Head Prices

C20XE Porous head repair

Uprated Sports Camshafts

As a by-product of our advanced turbo development programme we have managed something we didn't ever think could be done. We have come up with a camshaft specification which betters the GM originals for torque delivery - even on a non-turbo engine. This is a real breakthrough; previous experience had invariably shown disastrous mid-range torque reductions with so-called "Performance" camshafts fitted to GM engines. We can now offer Courtenay Uprated Sports Camshafts for most engines from 1.4 to 3.0, pre-Ecotec and Ecotec: "straight" and "vee".

Uprated Sports Camshafts - Prices

Z22SE 2.2 16v Alloy Engine - Tuning

Remap to standard ECU. Increases to +7 bhp £310 Fitted High Flow Sports Air Filter £34.95 Air Box Modifications (RWD - Fitted in house) £54 Air Box Modifications - Astra G/Zafira A (Fitted in house) £25.50 Cool running thermostat £25.50 Uprated Sports Camshafts. (Outright) Increases to +15 bhp - Astra G/VX220 £1247 Vectra B £1487 Modified Cylinder Head. Increases to +10 bhp £615 Fitting includes new valve seats from £625

For more details on tuning and full details of our Tuning Packages for VX220 2.2 16v Click Here.

2.4 Inlet Manifold for Z22SE

2.4 Inlet manifold for Z22SE 2.2 16v engine. Fits as a direct replacement to the original manifold - £495.00 Additional Useful Fitting Parts - £56.25 Special Order Only.

Z22SE Supercharger Conversion

Uprated Clutch for Z22SE

Our uprated clutch will withstand increases in power and torque without the slipping that may occur with a standard unit, yet still retain the drivability of a standard clutch. Coverplate and disc. Priced at £199.15. Fitting available. Why not combine this item with a lightweight flywheel at the same time? Hydraulic Slave Cylinder £119.95 when bought with a clutch

Modified original equipment throttle bodies

To a large extent, the power and torque out put on any engine is dependent on the volume of air its capable of drawing in. Research shows that the standard GM throttle bodies fitted to most Vauxhall engines are undersized and act as a bottle-neck to the inlet charge, pegging back power and torque. To over come this we dismantle the throttle body and use a CNC lathe to enlarge the diameter of the unit, as well as installing a new, bigger throttle disc and low profile spindle to suit. Typically, this results in an increase in full throttle cross sectional area of between 10 and 20%. The result? Improved torque and power outputs usually in the order of 4 to 7 bhp, as well as superior throttle response and a sharper feel to the engine. All throttle body reworking is carried out on an exchange basis.

Corsa 1.4, 1.6 Astra 2.0 8V, 2.0 16v (XE & XEV) Cavalier, Calibra 2.0 16v inc Turbo (XE & LET) Cavalier, Calibra 2.5 V6 Vectra V6 2.5 Astra, Vectra, VX220 - 2.2 16v - Under Development All the above .... £265 on exchange Omega 2.5 & 3.0 Twin butterfly .... £355 on exchange

Courtenay Engine Management and Throttle Bodies Kit

Courtenay’s have announced a complete engine management and fuelling system for the Vauxhall/Opel 2.0 16v engine. The multi throttle Alpha Engine Management System controls both the fuel injection and ignition requirements in a fully integrated package. The kit includes two Alpha throttle bodies, lambda sensor, air filters, inlet manifold and a complete fitting kit.

Billet Alloy Bottom Pulley

The standard bottom pulley is constucted around a rubber centre donut which is bonded to a steel centre section. Over time the rubber can split, which causes the pulley to wobble. This can throw the fan belt particularly on engines that are operating at high RPM. Our alloy pulley cures this problem and is available in single format (ideal when the engine is installed in a Nova or Corsa), power steering double format and Multi V format. They come machined from 6082 T6 solid billet alloy, with superior design featuring a deeper V to add extra stability to the fanbelt at high revs. These pulleys are available for C2.0XE, C2.0LET, 2.0 8V and V6.

Alloy Bottom Pulley 2.0 XE Single .... £111.95 Alloy Bottom Pulley 2.0 8v 4 bolt Single .... £111.95 Alloy Bottom Pulley 2.0 8v 4 bolt Double .... £123.95 Alloy Bottom Pulley 2.0 XE Double .... £123.95 Alloy Bottom Pulley C20XE Multi V .... OE Size £107.25 Underdrive £97.50 Alloy Bottom Pulley V6 Multi V .... £153.15 Alloy Bottom Pulley Z22SE Multi V .... £153.15

Courtenay Group N Chip (2.0 XE)

Superchips - Click Here

We are Superchips dealers and can offer chip upgrades and remaps for both Vauxhall/Opel models and other makes. Click on the logo or above link for more details.

Induction kits for Vauxhalls

For many years now, we have been recommending that induction kits are not fitted to performance Vauxhalls, especially turbo models. This has been because the induction kit would run close to the engines heat sources and the cold air charge would be heated before it reached the manifold thus negating any beneficial effect. But now things have changed. We have teamed up with leading air induction specialists Pipercross, to develop a version of the Viper carbon fibre cold air induction kit to suit popular Vauxhall models.

NGK Iridium Spark Plugs

Iridium NGK cooler running spark plugs offer an enhanced spark over the standard plugs. Suitable for many normally aspirated engines including Z14XE, Z16XE, Z18XE, C20XE, X20XEV, X25XE, Y26SE, X30XE, Y32SE. £32 for 4 cylinder engines. £49.50 for 6 cylinder engines.

Cool Running Thermostats

Our cool running thermostats reduce the engine's normal running temp by 10 degrees protecting the engine and running it closer to it's optimum power temperature. Mail order available. Application Price   Corsa 1.4, 1.6, 1.8 16v's £25.50   Astra 2 - 2.0 £25.50   Astra 3 - 1.8, 2.0 £25.50   Astra G - 2.0, 2.2 £25.50   Vectra B - 1.8, 2.0, 2.2 £25.50   2.2 16v - Astra, Vectra, VX220 £25.50   V6 - 2.5, 2.6, 3.0, 3.2 £25.50

Water Wetter

A 355ml bottle of Water Wetter, suitable to treat one cooling system, which aids the heat transfer of the coolant for even greater cooling ability and head temperature reduction. £15.25

Power Boost Valves

Lightweight Flywheels

Application Price Fitting 1.6 8v (Nova) Supplied on exchange £179 £295 1.4/1.6 16v (3kg weight reduction) Supplied on exchange £179 £295 2.0 16v XE (flat type flywheel i.e. distributor engine) Supplied on exchange £179 £295 2.0 8v (20SE/SEH/NE/SER) Supplied on exchange £179 £295

Lightweight Steel Billet Flywheels

Application Price Fitting 2.0 16v XE X dis 92 on (3.9 Kg weight reduction) £254.50 £295 2.0 16v Ecotec (3.9 kg weight reduction) £254.50 £335 2.2 16v VX220 (3.9 kg weight reduction) £254.50 £495 2.2 16v Astra/Zafira/Vectra (3.9 kg weight reduction) £254.50 £335 2.5 V6 24v (9.4 kg weight reduction) Vectra B £301.50 £335 3.0/3.2 V6 24v (9.4 kg weight reduction) Vectra B £301.50 £335

Uprated Clutch For 20XE engines.

Our uprated clutch will withstand increases in power and torque without the slipping that may occur with a standard unit, yet still retain the drivability of a standard clutch. Coverplate and disc. Priced at £185 including new Thrust Bearing. Fitting available. Why not combine this item with a lightweight flywheel at the same time?

F23 4.17 Final Drive Ratio

Suitable for the F23 gearbox. It lowers the Z22SE F23 (Astra G/VX220) by 5.8% and the Vectra B 2.5 V6 F23 by 8.7%. Also available for F23 for VX220 Turbo. Price: £POA Fitting available.

8.5mm Magnecor Leads

We have a range of 8.5mm Magnecor Leads available for the most popular engines. Please telephone if your vehicle is not listed here.

Uprated Lightweight Steel Rods and ARP Rod Bolt Kit

These uprated steel roads are manufactured from Certified SAE 4340 chrome-moly steel vacuumed to remove impurities, are shot peened to stress relieve the metal and have bronze gudgeon pin bushings are made to withstand higher impact force. They are far stronger and lighter than the standard ‘OE’ items and are packaged in weight matched sets balanced end to end +/- 1 gram. Ideal for all modified engines for fast road and track use, they are supplied with uprated ARP rod bolts. Available for 2.0 16v C20XE/20XE, C20LET and Z20LET Turbo Price - £505.55 including VAT

ARP Uprated Bolts

ARP Uprated Conrod Bolt Kit - 20XE/X20XEV £66.95 ARP Uprated Head Bolt Kit - 20XE £129.95 ARP Uprated Main Bearing Stud Kit - 20XE £111.95

Engine Bay Hose Kits - Click for details

Silicone Breather Hose

We have manufactured a silicone breather hose to suit 1.8 XE and 2.0 XEV engines. This hose is available in black, blue and red with other colours to special order and comes with the Courtenay Sport Logo. Priced at £13.25