718 GT4RS
10-21-2021, 09:26 AM
#2746
And let's keep in mind that this was not necessarily a legitimate time if the production car appears with front fender vents and a different intake vent in the rear quarter window. Besides, I find it odd that Porsche released a lap before the car was released. That's not normally the way they do it. I suspect there will be another run sometime next year when the ring reopens after winter.
This....that car is not the final product and as Chris mentions it's odd they did all the PR and Lap timing before presenting the car...we still don't know how the wing will look like (probably like the GT3?), front fender vents, final design of the side intakes (they do look pretty good right now).
If only they could offer it without CL and PCCBs......
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raymort (10-21-2021)
10-21-2021, 09:43 AM
#2747
Pro
Thread Starter
This....that car is not the final product and as Chris mentions it's odd they did all the PR and Lap timing before presenting the car...we still don't know how the wing will look like (probably like the GT3?), front fender vents, final design of the side intakes (they do look pretty good right now).
If only they could offer it without CL and PCCBs......
If only they could offer it without CL and PCCBs......
Tesla and BMW cars crashed during the scheduled day in August thus not allowing the C8 Z06 to set a time at the Nordschleife..
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pleasereset (10-21-2021)
10-21-2021, 09:50 AM
#2748
This....that car is not the final product and as Chris mentions it's odd they did all the PR and Lap timing before presenting the car...we still don't know how the wing will look like (probably like the GT3?), front fender vents, final design of the side intakes (they do look pretty good right now).
If only they could offer it without CL and PCCBs......
If only they could offer it without CL and PCCBs......
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worf928 (10-21-2021)
10-21-2021, 09:55 AM
#2749
Pro
Thread Starter
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raymort (10-21-2021)
10-21-2021, 09:56 AM
#2750
Rennlist Member
>> they will be admiring the rear GT4RS badging
Shots fired!
Shots fired!
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porscheflat6 (10-21-2021)
10-21-2021, 10:07 AM
#2751
That's a good way to put it......but trust me, on the hands of most people it will be "slower"
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porscheflat6 (10-21-2021)
10-21-2021, 10:28 AM
#2752
Rennlist Member
will it though? I’m still waiting to see all the lap times of people who upgraded from 991.2 to 992. I hear it’s “a million times better” or “totally new car” so interested in seeing their gains….. clearly they reinvented the wheel with the 992.
on the other hand I would wager someone who went from a gt4 to a gt4rs will definitely be much quicker than their previous best.
one thing for sure the gt4rs does sound better after 7k rpms. Ouch
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phefner (10-21-2021)
10-21-2021, 10:52 AM
#2753
will it though? I’m still waiting to see all the lap times of people who upgraded from 991.2 to 992. I hear it’s “a million times better” or “totally new car” so interested in seeing their gains….. clearly they reinvented the wheel with the 992.
on the other hand I would wager someone who went from a gt4 to a gt4rs will definitely be much quicker than their previous best.
one thing for sure the gt4rs does sound better after 7k rpms. Ouch
on the other hand I would wager someone who went from a gt4 to a gt4rs will definitely be much quicker than their previous best.
one thing for sure the gt4rs does sound better after 7k rpms. Ouch
The change from 991 to 992 while it's a substantial upgrade, only when you take the car to tracks that exploit those benefits you will see the gains....you also have to drive it above 90%.
In our local track which is 1.3 miles I expect 991.2 and 992 to be basically the same....again, the Ring takes all those small increases in performance and multiply them due to the length of the track.
Now...the GT4RS has "significant" engine upgrades (still need to see about the PDK) which would be relevant but the aero in my case is not...should be faster than a regular GT4.
You also have Cup 2R tires which for me skews everything...not everyone is willing to have Cup 2 R all the time.
10-21-2021, 11:11 AM
#2754
Rennlist Member
The 992 double wishbone supposedly helps turn in a lot…
10-21-2021, 11:16 AM
#2755
The change from 991 to 992 while it's a substantial upgrade, only when you take the car to tracks that exploit those benefits you will see the gains....you also have to drive it above 90%.
In our local track which is 1.3 miles I expect 991.2 and 992 to be basically the same....again, the Ring takes all those small increases in performance and multiply them due to the length of the track.
Now...the GT4RS has "significant" engine upgrades (still need to see about the PDK) which would be relevant but the aero in my case is not...should be faster than a regular GT4.
You also have Cup 2R tires which for me skews everything...not everyone is willing to have Cup 2 R all the time.
In our local track which is 1.3 miles I expect 991.2 and 992 to be basically the same....again, the Ring takes all those small increases in performance and multiply them due to the length of the track.
Now...the GT4RS has "significant" engine upgrades (still need to see about the PDK) which would be relevant but the aero in my case is not...should be faster than a regular GT4.
You also have Cup 2R tires which for me skews everything...not everyone is willing to have Cup 2 R all the time.
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2slow2speed (10-21-2021)
10-21-2021, 11:22 AM
#2756
Rennlist Member
+1 Misha has clout, I very much agree with his opinions especially with Lars behind the wheel and solving the "brake issue" will produce an even better ring time.
If that slit on the front fenders from the spotted shot from LA is the final product, that'd be one fugly line. The current duct tape don't appear to be covering aggressive vents found on the 2RS/3RS.
If that slit on the front fenders from the spotted shot from LA is the final product, that'd be one fugly line. The current duct tape don't appear to be covering aggressive vents found on the 2RS/3RS.
10-21-2021, 11:22 AM
#2757
Pro
Thread Starter
Spring rates are almost double as well as differences to the rear multi-link suspension and substantial changes to increase downforce compared to a 991.2 GT3.
Along with its engine, the new GT3 also shares its front suspension with a model from Porsche’s Motorsport department. For the first time, Porsche has fitted the 911 RSR’s double-wishbone front suspension to a road-going model, a setup that helps keep more of the tyre’s contact patch on the road when under high lateral forces. Rose-joints are used throughout too, and there are also integrated helper springs. In order to maximise the benefit of the performance from the double-wishbone set-up at the front the multi-link rear suspension is totally revised, too.“We had to change the rear suspension from the geometry to the activation curves of the rear axle steering so it worked with the front suspension” explained Andreas Preuninger, Porsche’s Director of GT Product Line on the eve of the car’s launch. “If we had carried over the rear suspension from the old car the rear wheel steering wouldn’t have worked.”
While the front suspension is all rose-jointed, the multi-link rear utilises a combination of both bushes and unilateral joints. Damping and spring rates have been set up to reduce body roll, pitch and dive under braking and acceleration, and the ride height is 20mm lower than a Carrera S. However, by using the latest PASM damper technology from the current 992 it has allowed for a wider operating bandwidth for the damper when it comes to tuning the chassis, which should, claims Porsche, result in the new GT3 not sacrificing any of its on-road performance in order for it to excel on track. This despite the spring rates almost doubling.
...........................
Another contributing factor to the GT3’s performance is, of course, downforce. To this end there is a four-stage adjustable splitter at the front and a new rear wing, which sits on a swan neck support and has an equal number of adjustments. Combined with the new flat floor, front splitter and wider lip spoiler, and rear diffuser the new GT3 generates up to 160 percent more downforce. Even in its lowest downforce setting it is a near match for the 991.2 GT3 RS, thanks to the rear wing being 15-20 percent larger.
https://www.evo.co.uk/porsche/911-gt...n-600lt-killer
Originally Posted by evo.co.uk
Along with its engine, the new GT3 also shares its front suspension with a model from Porsche’s Motorsport department. For the first time, Porsche has fitted the 911 RSR’s double-wishbone front suspension to a road-going model, a setup that helps keep more of the tyre’s contact patch on the road when under high lateral forces. Rose-joints are used throughout too, and there are also integrated helper springs. In order to maximise the benefit of the performance from the double-wishbone set-up at the front the multi-link rear suspension is totally revised, too.“We had to change the rear suspension from the geometry to the activation curves of the rear axle steering so it worked with the front suspension” explained Andreas Preuninger, Porsche’s Director of GT Product Line on the eve of the car’s launch. “If we had carried over the rear suspension from the old car the rear wheel steering wouldn’t have worked.”
While the front suspension is all rose-jointed, the multi-link rear utilises a combination of both bushes and unilateral joints. Damping and spring rates have been set up to reduce body roll, pitch and dive under braking and acceleration, and the ride height is 20mm lower than a Carrera S. However, by using the latest PASM damper technology from the current 992 it has allowed for a wider operating bandwidth for the damper when it comes to tuning the chassis, which should, claims Porsche, result in the new GT3 not sacrificing any of its on-road performance in order for it to excel on track. This despite the spring rates almost doubling.
...........................
Another contributing factor to the GT3’s performance is, of course, downforce. To this end there is a four-stage adjustable splitter at the front and a new rear wing, which sits on a swan neck support and has an equal number of adjustments. Combined with the new flat floor, front splitter and wider lip spoiler, and rear diffuser the new GT3 generates up to 160 percent more downforce. Even in its lowest downforce setting it is a near match for the 991.2 GT3 RS, thanks to the rear wing being 15-20 percent larger.
10-21-2021, 11:25 AM
#2758
Addict
Rennlist Member
Rennlist Member
10-21-2021, 11:37 AM
#2759
All those pluses for 992 handling are thru...unless you use it for C&C, where a lot of these cars end up! 
10-21-2021, 11:49 AM
#2760
Burning Brakes
The primary advantage that the double wishbone front gives you VS MacPherson strut is way more dynamic camber. The more suspension compression you have going into a turn, the more dynamic negative camber of the wheel you get on double wishbones.
Don't get hung up on spring rates. It's not too meaningful to compare the higher spring rates of the double wishbone 992 GT3 to those of the strut 991. To achieve the same wheel rate (overall "stiffness"), double wishbones would require a MUCH higher spring rate than a MacPherson strut spring rate would. The double wishbone design exerts greater leverage on the spring than a strut design does. However on double wishbones, you don't want the spring to be TOO stiff because that can reduce the dynamic compression to a point that it negates the advantage of the dynamic camber that the double wishbones give you.
Don't get hung up on spring rates. It's not too meaningful to compare the higher spring rates of the double wishbone 992 GT3 to those of the strut 991. To achieve the same wheel rate (overall "stiffness"), double wishbones would require a MUCH higher spring rate than a MacPherson strut spring rate would. The double wishbone design exerts greater leverage on the spring than a strut design does. However on double wishbones, you don't want the spring to be TOO stiff because that can reduce the dynamic compression to a point that it negates the advantage of the dynamic camber that the double wishbones give you.
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gt4-2-n8 (10-22-2021)