Turning up the wick to Cobra’s Stage 3 Power Upgrade kit and things are starting to get very serious. As previously explained, whereas some aftermarket tuners suggest that the quality of the 4.0-litre engine’s internals are capable of withstanding much higher than stock torque loads, we do not believe that in the long term the connecting rods will provide good service.
Call it overkill, however at Nizpro we are more interested in ensuring our customers receive a product that we have absolutely no reservations in supplying. Granted, some engines may handle 450 plus flywheel kilowatts, however the question remains for how long. If an engine breaks, the damage will be significant. The alternative is to provide prevention rather than hoping for a cure once it is too late.
Cobra's Stage 3 package is an extremely comprehensive package that includes:
• Engine stripped and inspected
• All clearances are machined to exacting standards (blueprinted)
• Crank, rods, pistons are balanced
• Nizpro designed forged pistons
• Cylinder combustion chamber is modified
• Is fitted with new rings and bearings
• Custom heavy-duty valve springs are fitted
• Custom Nizpro steel billet oil pump gears
• Nizpro designed custom high performance connecting rods and ARP bolts
• Engine is reassembled to exacting standards
• Engine and Stage 2 kit are fitted to vehicle
• Block sonically tested to ensure no core shift or other problems
• Engine tuned using Flash Tuner with boost at approx. 1.2 Bar
• Engine is carefully run-in on chassis dyno; the process includes all fuel and an oil change
• The cylinder head is stripped, checked and cleaned up where necessary, noting that in stock trim the XR6 head provides extremely good flow characteristics
This package is quieter and smoother than any other BA/BF aftermarket forged piston engine on the market.
Engine is now capable of 450 rear wheel kilowatts.
Stage 3 engine kit is $12919 inc. GST - Drive in, drive away.
Please note: Kit pricing is under the assumption that you already have Stage 2 Plus modifications. If not, then add Stage 2 Plus pricing into your total figure.
The performance of a Cobra Stage 3 kitted vehicle is simply astonishing in that it offers ‘normal’ drivability. In fact you wouldn’t know that it was anything other than stock in the way it drove, until of course you nail the accelerator. Furthermore, you are able to maintain (depending on how one drives) stock fuel consumption figures and impeccable driving manners.
For more information, call us on (03) 9761 1522 or send an email to: info@nizpro.com.au
XR6T Brochure - PDF Format - 322 KB
Magazine Article - PDF Format - 780 KB
Fitting Instructions - Word Document - 1.8 MB
