This air guide sends air exiting the front heat exchangers to blow over the friction ring of the front brakes. So the calipers, the center of the rotors, and the face of the rotors are getting cooling airflow!
The rear suspension is pretty close to the previous generation 991 multilink with some refinements to reduce weight.
The main difference is the upright looks slimmed down and hollowed out. It is probably much lighter than the old part. This is a pretty slick design!
Overall the layout looks to be pretty close to the 991, we would have to see the 991 side to side with the 992.
3 comments
“Apparently, Porsche found that direct-injected engines make particulates like a diesel. We assume that the car probably has some sort of regeneration cycle to clean the traps that makes a lot of heat, hence this metal-lined scoop.”
Dfi engines do create fine particules. It’s mendatory in Europe now to have a GPF on all engines. The only difference is EU spec cars (for PORSCHE) have a differential pressure sensor, US cars do not.
The normal regen cycle on gasoline engines takes place when you’re coasting, it’s the only time where a gasoline engine has enough oxygen in the exhaust to burn the particules.
There is also a forced regen mode. I’m not sure but I think it uses secondary air injection to get oxygen in the exhaust. Porsche informs that it must be performed with a lot or airflow passing under the car because with the car stationnary, the red hot GPF could potentially damage the road it’s on (and everything around it).
I really like the diffuser to brake scoop design.
My theory on the move to SLA double wishbone front is that the Cayman was posing a serious track threat and they needed to further differentiate the cars with a significant suspension upgrade on the 911.
Also, they could finally put the real GT3 engine in the Cayman GT4 RS without actually eclipsing the 992 911 GT3.
Great article. Would have been great to get some more zoomed out overall photos of the underside to understand how much of the floor is flat bottomed. The number of aero details is staggering