The Porsche 911، one of the greatest sports car icons of all time، is all-new for 2020 but you may not be able to tell from the outside. At least not at first glance and probably not from 40 feet away. You’d have to notice the more rounded tail end، the raised، 3D “PORSCHE” script across the car’s keister، and، if you have laser-cat-like vision، the 1.8-inch-wider track in front. But it is all-new. It has a prodigious amount of aluminum، for instance، making up over 60 percent of the sheet metal whereas the old one was made up of around 30 percent. It has a new eight-speed dual-clutch transmission that guarantees you’ll be in the right spot of the powerband right when you need it most. And while the displacement of the flat-six remains at 2981 ccs، almost everything else about the engine is new، including a new، higher peak power output of 443 hp، as the Auto Week said.
That’s not necessarily a bad thing، since the car it is replacing was also one of the best in the world and this one is simply better، if a bit too familiar. That may calm the fears of the faithful who fret that with every new-model 911 that comes along – this is the eighth - Porsche will somehow have messed up their dream car. Worry not، Porschephiles، your dream car is still dreamy، and now even faster. I know it’s faster because I just spent a day hammering on it over the roads and passes of eastern Spain - and during several laps of the tasty 14-turn Circuit de la Comunitat Valencia Ricardo Tormo، and all I can say after that is، “Aye Chihuahua،” even though that's new-world Spanish، not old. Your beloved 911 is still great and is، in fact، better in almost every way you could measure it.
Let’s start from the inside and work our way out. Yes، the displacement of the engine - the bore and stroke - is same، but the new engine has new pistons، higher 10.2:1 compression ratio، more efficient piezo injectors that cram fuel into the combustion chamber at 2900 psi، and there is now variable valve lift technology on the intake cams to accommodate high and low loads. In fact، one intake valve can open further than the other to create tumble in the chamber for better burn and a bigger bang.
“So the mixture is much، much better and more homogenous،” said Matthias Hofstetter، director of powertrain on the 911 and 718.
The exhaust manifold goes from sheet metal to cast steel in the new engine.
“This means you have much better behavior concerning pressure drop and pulse in front of the turbine،” said Hofstetter. “When you have a higher pulse on the turbine wheel، a higher speed from the turbocharger wheel، you have much، much better response.”
The turbo wastegate is now operated electrically instead of by vacuum، another factor resulting in increased precision and control. The result is 443 hp at 6500 rpm and 390 lb-ft from 2300 to 5000 revs. That’s 148 hp per liter for those keeping score at home.