718 GT4RS
#2311
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If it has a GT3 engine then it will cost GT3 money, which is fine by me as it's less likely to depreciate my GT4.
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TDT (09-20-2021)
#2312
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When the 981 GT4 came with a Carrera S engine, it still cost less than a Carrera S ($85k vs. $99k)
Last edited by GrantG; 09-20-2021 at 01:19 AM.
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tthellott T (09-20-2021)
#2313
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Stephen Shi (09-20-2021)
#2314
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#2315
RL Community Team
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You are missing the point, the actual engine from the Carrera S was not rotated 180 degrees and put into the 981 GT4...
As for some family similarities between the 4 cylinder engines and the 9A2 EVO 4.0l, they are only that... The other thing that drives me nuts when somebody says they bored out the 911 3.0l engine to make the 4.0l, again a massive misrepresentation of the actual situation, the engine block design is similar but it is cast to support the larger displacement and midengine orientation from the start.
#2316
#2317
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Now thats a stretch!
You are missing the point, the actual engine from the Carrera S was not rotated 180 degrees and put into the 981 GT4...
As for some family similarities between the 4 cylinder engines and the 9A2 EVO 4.0l, they are only that... The other thing that drives me nuts when somebody says they bored out the 911 3.0l engine to make the 4.0l, again a massive misrepresentation of the actual situation, the engine block design is similar but it is cast to support the larger displacement and midengine orientation from the start.
You are missing the point, the actual engine from the Carrera S was not rotated 180 degrees and put into the 981 GT4...
As for some family similarities between the 4 cylinder engines and the 9A2 EVO 4.0l, they are only that... The other thing that drives me nuts when somebody says they bored out the 911 3.0l engine to make the 4.0l, again a massive misrepresentation of the actual situation, the engine block design is similar but it is cast to support the larger displacement and midengine orientation from the start.
porsches own words;
One thing that all members of the boxer family have in common is their cylinder spacing: invariably 118 millimeters. Within the cylinders, pistons with diameters of 91 and 102 millimeters do their duty. More precisely: either 76.4 millimeters up and down or 81.5, depending on the crankshaft. Together with the number of cylinders, this results in five different displacements and nine power levels in the 718 and 911 model lines. With a pool of identical parts that are used without modification in all model lines, as well as components with similar design principles, the result is a wealth of synergies in the fundamental engine design toolbox. This enables developers to concentrate on the individual character of the engine’s periphery—for instance, the intake duct and exhaust system. The result is typical Porsche: because all boxer engines bear the same genes and despite their different characters, they’re all equally efficient, emotional, and driven to perform.
https://newsroom.porsche.com/en/2020...394-20340.html
#2318
Racer
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More words:
https://newsroom.porsche.com/en/pres...rformance.html
https://newsroom.porsche.com/en/pres...rformance.html
The high-revving, high-performance and efficient heart of the new Porsche 718 Cayman GT4 and 718 Spyder is a specially developed six-cylinder 4.0-litre boxer engine with lots of high-tech GT genes. The naturally aspirated engine is based on the same engine family as the turbocharged motors in the current 911 Carrera model series.
#2319
RL Community Team
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guess depends on what your definition of ‘based’ means… to me this sums it up. They were designed from the start to be a family of engines that can be flexibly interchanged across platforms.
porsches own words;
One thing that all members of the boxer family have in common is their cylinder spacing: invariably 118 millimeters. Within the cylinders, pistons with diameters of 91 and 102 millimeters do their duty. More precisely: either 76.4 millimeters up and down or 81.5, depending on the crankshaft. Together with the number of cylinders, this results in five different displacements and nine power levels in the 718 and 911 model lines. With a pool of identical parts that are used without modification in all model lines, as well as components with similar design principles, the result is a wealth of synergies in the fundamental engine design toolbox. This enables developers to concentrate on the individual character of the engine’s periphery—for instance, the intake duct and exhaust system. The result is typical Porsche: because all boxer engines bear the same genes and despite their different characters, they’re all equally efficient, emotional, and driven to perform.
https://newsroom.porsche.com/en/2020...394-20340.html
porsches own words;
One thing that all members of the boxer family have in common is their cylinder spacing: invariably 118 millimeters. Within the cylinders, pistons with diameters of 91 and 102 millimeters do their duty. More precisely: either 76.4 millimeters up and down or 81.5, depending on the crankshaft. Together with the number of cylinders, this results in five different displacements and nine power levels in the 718 and 911 model lines. With a pool of identical parts that are used without modification in all model lines, as well as components with similar design principles, the result is a wealth of synergies in the fundamental engine design toolbox. This enables developers to concentrate on the individual character of the engine’s periphery—for instance, the intake duct and exhaust system. The result is typical Porsche: because all boxer engines bear the same genes and despite their different characters, they’re all equally efficient, emotional, and driven to perform.
https://newsroom.porsche.com/en/2020...394-20340.html
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#2320
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#2321
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Late to the game, but I'm an interested and have expressed my interest to my dealer. Based on the single page of posts above, I assume we're waiting for November to hear anything? It would be very odd for them to release a car like this for the LA Auto Show, but who knows, it seems like this has been teased for far too long and is overdue for a release now.
#2322
Racer
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If the bhp is 475-480+ and the engine is super durable/reliable, does it really matter if it's a GT3 engine or a 718 engine? The displacement and bore x stroke are identical as I'm sure the power curve would be similar regardless of what its "origins" are or how close to "motorsport derived" something is..so long that its bullet-proof on the track and it produces the advertised power is really all that matters ultimately. Plenty of examples of "motorsport derived" engines that blow up more than average (eg BMW S54/65/85, Ford FPC Voodoo, etc). Even the .2 991 RS track record isn't pristine.
Last edited by FogCitySF; 09-20-2021 at 09:27 PM.
#2323
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Anybody hearing what the going ADM is likely to be on the 4RS?
#2324
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If the bhp is 475-480+ and the engine is super durable/reliable, does it really matter if it's a GT3 engine or a 718 engine? The displacement and bore x stroke are identical as I'm sure the power curve would be similar regardless of what its "origins" are or how close to "motorsport derived" something is..so long that its bullet-proof on the track and it produces the advertised power is really all that matters ultimately. Plenty of examples of "motorsport derived" engines that blow up more than average (eg BMW S54/65/85, Ford FPC Voodoo, etc). Even the .2 991 RS track record isn't pristine.
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FogCitySF (09-20-2021)