Spy shots of 991.2 GT3 RS 4.2 - supposedly
04-14-2016, 10:49 AM
#47
04-14-2016, 11:18 AM
#48
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Clearly you don't know chinese mkt very well. Porsche should put hybrid from 918 in a cayenne, with LWBS.
04-14-2016, 03:06 PM
#51
04-15-2016, 09:46 AM
#53
04-15-2016, 01:36 PM
#56
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04-15-2016, 01:43 PM
#57
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With the GT2 able to focus on outright performance, the GT3 range could become more driver focused in the vein of the R. This would be a great way for Porsche to please both customer bases. Considering how fast the current Turbo S is on track compared with the GT3 RS, or even the new 991.2 Carrera vs 991.1 Carrera, the NA engine seems destined to be the drivers engine of choice while ceding pure performance to turbo power.
04-15-2016, 02:02 PM
#58
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With the GT2 able to focus on outright performance, the GT3 range could become more driver focused in the vein of the R. This would be a great way for Porsche to please both customer bases. Considering how fast the current Turbo S is on track compared with the GT3 RS, or even the new 991.2 Carrera vs 991.1 Carrera, the NA engine seems destined to be the drivers engine of choice while ceding pure performance to turbo power.
04-15-2016, 03:49 PM
#60
Drifting
It's just speculation.
The factory has never offered a flat 6 that displaced more than 4.0 liters, and that was relatively recent (later 997 race cars, 991 race cars; 997 and 991 GT3 RS 4.0 street cars).
It's difficult to construct a flat 6 that displaces more than 4.0 liters (pistons get too big), and AP said in the past that the factory could go no larger on the Mezger engine.
For the move from 3.6 to 3.8 with the 997 facelift, they increased the bores only (and added steel cylinder liners, as well). For the Mezger 4.0 they changed the crank.
Most aftermarket Mezger tuners (Sharkwerks, BBI, Leh Keen's car, which was built by Autometrics, etc.) will take a 3.6 to a 4.0 by boring, and then go to a 4.2 (BBI claims 4.25) with a crank.
It's not that they can do something that Porsche can't, it's just that the tuners are working in a very different, much smaller market. E.g., the Sharkwerks crank alone costs over $10K. Porsche has to sell to the masses.
The factory has never offered a flat 6 that displaced more than 4.0 liters, and that was relatively recent (later 997 race cars, 991 race cars; 997 and 991 GT3 RS 4.0 street cars).
It's difficult to construct a flat 6 that displaces more than 4.0 liters (pistons get too big), and AP said in the past that the factory could go no larger on the Mezger engine.
For the move from 3.6 to 3.8 with the 997 facelift, they increased the bores only (and added steel cylinder liners, as well). For the Mezger 4.0 they changed the crank.
Most aftermarket Mezger tuners (Sharkwerks, BBI, Leh Keen's car, which was built by Autometrics, etc.) will take a 3.6 to a 4.0 by boring, and then go to a 4.2 (BBI claims 4.25) with a crank.
It's not that they can do something that Porsche can't, it's just that the tuners are working in a very different, much smaller market. E.g., the Sharkwerks crank alone costs over $10K. Porsche has to sell to the masses.