We'll take Nissan's word for the fact that the new and improved 350Z's engine is more powerful than the outgoing model. Without testing the two models back-to-back I'd argue that few people would the difference an extra 13bhp makes, certainly in a car that already boasted nearly 300bhp.
Still, the new engine is the focus of this year's upgrade and the changes are more important than a few extra horses. Internal modifications are widespread, the aim being an increase in the engine rev limit, improved air flow and a higher compression ratio thanks to less of a tendency to knock. One of the alterations carried out to enable a higher engine speed is the raising of the block deck height, resulting in reduced piston side forces. Although the difference is only 8.4mm, it meant that the bonnet had to be reprofiled to fit the new engine in, hence the suggestive power bulge - the most distinctive differentiating external feature of the new Zed.
Apparently the engine is 80% new with the raft of changes resulting in more power (as mentioned), more torque (up just 5Nm to 358Nm at 4,800rpm) and marginally better fuel consumption. What is key, though, is the engine speed at which the peak power is produced. This has risen from 6,400rpm to 6,800rpm, allowing the driver to hold onto the revs that little bit longer, enjoying the unmistakable howl from the exhausts. There is no doubt that the new engine is freer revving and we suspect we'll be seeing more from this unit in time.
Changes elsewhere are minimum; there are different exterior paint options, plus the choice of a different interior colour for the first time, along with Active Headrests, designed to reduce neck injury in a rear-end shunt. Nissan has also changed the standard-fit tyres, supposedly to increase refinement, though they're still Bridgestone Potenzas.
We spent a day pushing the new car to its limits at the quick Castle Combe race circuit. There is no shortage of grip and the chassis is huge fun to chuck around, with a lovely rear-led stance and plenty of torque to adjust your line through each corner. The ESP system can thankfully be disabled in such circumstances, though it's an invaluable safety net in normal driving conditions. Despite sustained abuse, the 350Z's Brembo brakes stood up well and everyone present came away smiling.
So, the Zed has been updated, but don't worry; it's as brilliant as ever.
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