991.2 GT3 reviews thread.
05-05-2017, 01:38 PM
#331
Race Director
Have they beefed up the Mechanical Diff in the Manual compared to previous generations. I know I have heard the OEM was prone to wear. Any news if they beefed this up knowing many would Track their Manual GT3s??
05-05-2017, 01:41 PM
#332
Rennlist Member
typically the mech rear diffs on even gt3's were made of warm chocolate
they would be wise to put stronger plates in otherwise matt at guards will have a another nice new income stream...
05-05-2017, 02:06 PM
#333
Point 4: The improved efficiency of the manual switch is reflected even in its 2 km / h higher final speed. Even a prestige, but an advantage. Especially since the acceleration of the PDK is only really faster from the state. Intermediate acceleration, even from low speeds, usually prevails, says Andreas Preuninger, who has tried several times with his colleagues.
Add in the weight advantage (1.2%) and you get ~3% better in-gear thrust to weight for the manual transmission car... or you would if the ring and pinions were the same, which they are not. The manual car's final drive is 5.5% taller, effectively canceling any advantage out, but it will hold on to gears that much longer meaning it can pull ahead at the top of every gear.
Given this AP's statement that the manual car usually wins in a roll-on seems plausible, and given a 3% (15 horsepower) advantage it might even remain true as they start to go through the gears. I wouldn't have any illusions that this would let you close the gap on the track where the PDK's seamless shifting while cornering will be a huge plus, but it does suggest the manual is less of a handycap than it might first appear.
05-05-2017, 03:33 PM
#334
Nordschleife Master
Thread Starter
Last edited by neanicu; 05-05-2017 at 04:05 PM.
05-05-2017, 03:48 PM
#335
Nordschleife Master
Thread Starter
Last edited by neanicu; 05-05-2017 at 04:07 PM.
05-08-2017, 08:33 PM
#337
Rennlist Member
^ Interesting. So if 3,000-4,000 991.2 GT3s are built, and the take-rate for manuals is 20-30%, there is a very real chance that the 991 GT3 with manual may end up being more rare than the 911R...
05-08-2017, 08:40 PM
#338
Drifting
"The clutch is heavy but bites low and progressively enough to allow gentle inputs to yield superior smoothness to the PDK at manoeuvring speeds. The accelerator pedal's instant responses - and the engine's minimal flywheel effect - positively encourage rev-matching, either with just a dose of throttle, or by using the firm brake pedal as the fulcrum for some heel-and-toe work."
Heavy clutch ftw!
"If lap times and tenths are your goal then pick the PDK. Likewise, if you want to flaunt the Motorsport look in stop-start commuting traffic the temptations are obvious. It's not like the option of a manual makes PDK the wrong choice. But if you crave the involved, tactile experience (not to say challenge) 'true' GT3 fans have traditionally appreciated the manual is definitely the one. Arguably this is what the GT3 has always been about as much as outright pace and why, in my case, I'd have it every time."
Heavy clutch ftw!
"If lap times and tenths are your goal then pick the PDK. Likewise, if you want to flaunt the Motorsport look in stop-start commuting traffic the temptations are obvious. It's not like the option of a manual makes PDK the wrong choice. But if you crave the involved, tactile experience (not to say challenge) 'true' GT3 fans have traditionally appreciated the manual is definitely the one. Arguably this is what the GT3 has always been about as much as outright pace and why, in my case, I'd have it every time."
05-08-2017, 11:26 PM
#340
Burning Brakes
"The clutch is heavy but bites low and progressively enough to allow gentle inputs to yield superior smoothness to the PDK at manoeuvring speeds. The accelerator pedal's instant responses - and the engine's minimal flywheel effect - positively encourage rev-matching, either with just a dose of throttle, or by using the firm brake pedal as the fulcrum for some heel-and-toe work."
Heavy clutch ftw!
"If lap times and tenths are your goal then pick the PDK. Likewise, if you want to flaunt the Motorsport look in stop-start commuting traffic the temptations are obvious. It's not like the option of a manual makes PDK the wrong choice. But if you crave the involved, tactile experience (not to say challenge) 'true' GT3 fans have traditionally appreciated the manual is definitely the one. Arguably this is what the GT3 has always been about as much as outright pace and why, in my case, I'd have it every time."
Heavy clutch ftw!
"If lap times and tenths are your goal then pick the PDK. Likewise, if you want to flaunt the Motorsport look in stop-start commuting traffic the temptations are obvious. It's not like the option of a manual makes PDK the wrong choice. But if you crave the involved, tactile experience (not to say challenge) 'true' GT3 fans have traditionally appreciated the manual is definitely the one. Arguably this is what the GT3 has always been about as much as outright pace and why, in my case, I'd have it every time."
