Posts Tagged ‘ Powerflex ’

Astra H Handling and Stopping

We recently had the job of improving the stopping and handling on an Astra H.

This included supplying and fitting a D2 6 Pot 356mm front brake kit, complemented by a rear 292mm brake upgrade with vented rear 8G discs and new calipers.

Additionally a Premium Suspension package was also supplied and fitted: B8 dampers and DAP Road spec springs along with poly bushed Whiteline front wishbones, Powerflex poly rear beam bushes and a Whiteline rear anti roll bar.

 

Engine Bed/Subframe Bushes – Astra G/H and Zafira A/B

We prepared a second subframe and fitted the uprated bushes to it prior to fitting it to one of our track day cars.

Astra H Subframe with uprated purple road spec polyurethane subframe bushes fitted.

Astra Subframe with Poly Bushes Fitted

Astra Subframe with Poly Bushes Fitted

Astra H Subframe with uprated black track spec polyurethane subframe bushes fitted. This is due to be fitted to our track car. The front anti roll bar and power steering rack will be swapped over onto it.

Astra Subframe with Uprated Black Poly Bushes Fitted

Astra Subframe with Uprated Black Poly Bushes Fitted

And some close up shots:

Purple Spec: £22 each Black Spec: £24 each

6 complete bushes required per subframe. Kit includes 12 ‘top hat’ type bushes, 6 stainless steel sleeves/inserts, 12 zinc coated upper and lower washers and a grease sachet.

Engine Bed/Subframe Bushes – Astra G/H and Zafira A/B

Front End Improvement for Astra G/H and Zafira A/B.

Poweflex have engineered a solution to replace the factory engine bed/subframe bushes in Astra G/H and Zafria A/B which can be prone to failure and contribute to vague handling. These stiffer engine bed bushes help improve the front end feel of the car especially during turn-in and cornering. By removing the flex in the subframe bushes the handling is improved giving a more positive feel to the front end.

These Front Subframe Bushes feature two polyurethane top-hat style bushes that makes for simple installation and durability. The bushes house a stainless steel sleeve and are supported by zinc coated steel washers at each end for increased support under load.

Poly bushes will be resistant to corrosion and the addition of a stainless steel sleeve should help prevent the bed bolts from seizing into the bushes, which can happen with the factory bushes.

Suitable for Astra G, Astra H, Zafira A and Zafira B All Models.

These new bushes replace OE part numbers 90498689, 9223022, 9223023 and 13107328 used across the model ranges.

The application of corrosion resistant materials, robust design and the Powerflex Lifetime Warranty ensures the subframe need not be removed again once fitted, unless removal is required for other service work to be carried out.

These bushes are available in Purple Series 80 Shore Road Spec material for vehicles that are mainly used on the road and also Black Series 95 Shore Track Spec material that suits vehicles being used in Motorsport or predominantly on the track.

Purple Spec: £22 each Black Spec: £24 each

6 bushes required per subframe.

Professional installation is recommended. The ideal time is when the subframe is removed to allow access to the gearbox or clutch.

Engine Bed Bushes - Purple Series

Engine Bed Bushes – Purple Series

Engine Bed Bushes - Black Series

Engine Bed Bushes – Black Series

Uprated Exhaust Mounts

We have noticed that the universal exhaust rubber/mount used on many many popular Vauxhall/Opel applications including Astra H VXR, is not very strong and over time has a tendency to perish, stretch and split, consequently requiring replacement. Often failure can occur quite quickly, especially on a modified car.

Added to this on performance models and modified vehicles with larger diameter exhaust systems, any exhaust movement in the rubber exhaust mounts can lead to knocking from time to time, especially when the mounts start to fail.

Have you ever noticed the occasional knock on start up, or from time to time when driving? This could be an indication of the first signs of weakening rubber exhaust mounts. So worth giving them a checkover at the first signs of a problem.

So we approached our friends at Powerflex to look at a solution for us. Because none of their universal exhaust mounts were close enough in size to the Vauxhall/Opel rubber mount, they set about making a polyurethane exhaust mount as a replacement.

Powerflex Exhaust Mount

Powerflex Exhaust Mount

They have looked at the OE item and manufactured a replacement, which is slightly larger overall but retaining the factory dimensions internally, in their high temperature polyurethane material with a Shore A hardness of 67, compared to the original rubber mounts which measured 55 Shore A.

The result is a much stronger, more durable mount with much less flex, offering far greater resistance to tearing and rot. Ideal for any standard or modified fast road vehicle; these exhaust mounts are equally at home on the track too.

An inexpensive and worthwhile upgrade. The number required per car will vary but this mount will suit Astra G, Astra H, Vectra B, Vectra C, Meriva A, Meriva B, Signum, Omega, Corsa C, Tigra B, Zafira A and Zafira B where 90466688 is specified.

Note: This mount cross references to OE Part Number 90466688

Powerflex Black Series Poly Bushes

Powerflex Black Series Logo

Powerflex Black Series Logo

Powerflex Black Series range has been developed for ultimate performance, motorsport, track and race applications offering the most precise and accurate alignment for a wide range of chassis.

Designed for the Track – Ready to Race – Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry.

This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Performance – Developed for ultimate performance using the toughest materials.

Precision – Engineered for the most accurate control of chassis geometry.

Practical – Manufactured to be easily fitted without the need for special tools.

All popular purple bushes are available in the new material including wishbone bushes and engine mounts

Astra H/Zafira B Front Wishbone Bushes

Astra H/Zafira B Gearbox Side Mount Insert

Astra H/Zafira B Front Engine Mount Insert

Astra G/Zafira A Front Wishbone Bushes

Poly Gearbox/Side Mount – Astra H/Zafira 2.0T, VXR and CDTi

We identified a weakness in the gearbox mount (left had side mount) on Astra H VXR and CDTi models, whereby these are prone to failure caused by splitting. Additionally for fast road and trackday use the ability to strengthen this factory mount will reduce its movement.

With Powerflex we have now produced an insert which compliments other uprated engine mounts and polyurethane inserts.

Inserts are an effective way of reducing engine movement, aiding power delivery and reducing damage to exhaust downpipes and other hoses and improving handling with less engine movement to unsettle a car during braking and cornering.

The gearbox insert fits Astra H 2.0 petrol turbo engines (Z20LEL, Z20LER), Astra H VXR (Z20LEH), Astra H 1.9 CDTi Models (Z19DTx) and Zafira B 2.0 Petrol Turbo (Z20LER), VXR (Z20LEH) and 1.9 CDTi (Z19DTx).

This mount is available in Yellow Material with a shore hardness of 70 for fast road use and light track use and in the new Black Material with a shore hardness of 95 (recommended only for race and dedicated trackday use)

Priced at £27.54 £24.00 (Yellow – Shown Below)
and £30.30 £27.00 (Black Series)

Poly Gearbox/Side Engine Mount Insert

Poly Gearbox/Side Engine Mount Insert

The Courtenay Sport Blog

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