992 GT car specs
05-23-2020, 03:52 PM
#211
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Engines are all about Physics. If the max RPM equals max HP in a NA ICE engine, it's because the manufacturer artificially put the red line at max HP.
I will call you on it. Post a pic of a HP vs RPM curve where HP does not go down at max rpm.
I agree with that but the question was if power could just be increased by raising the rpm. The answer is no and in your examples, HP still decreases after peak power as rpm increases.
I will call you on it. Post a pic of a HP vs RPM curve where HP does not go down at max rpm.
I agree with that but the question was if power could just be increased by raising the rpm. The answer is no and in your examples, HP still decreases after peak power as rpm increases.
Making over 525hp at more than 8,500 rpm with a redline above 9,200 rpm is entirely possible and/or likely.
05-23-2020, 05:53 PM
#212
The answer is certainly not No. The answer is that it depends on what changes are made to the engine. And Porsche is very capable of increasing power with revs (beyond current max HP and beyond the current power peak).
Making over 525hp at more than 8,500 rpm with a redline above 9,200 rpm is entirely possible and/or likely.
Making over 525hp at more than 8,500 rpm with a redline above 9,200 rpm is entirely possible and/or likely.
05-23-2020, 07:04 PM
#213
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05-23-2020, 07:39 PM
#214
Burning Brakes
- I think we only have another 90 days max before for find out
05-23-2020, 08:53 PM
#215
Drifting
(1) That’s sufficient to sell the car
(2) They need an upgrade to justify the higher price of the 992.1 GT3 RS - perfect opportunity to introduce the 4.2L engine for the street
(3) The facelift 992.2 GT3 will receive the 4.2L engine...
(4) ... and the 992.2 GT3 RS will need to receive something else - potential for (mild) hybridization)
If they start with the 4.2L in the pre-facelift GT3, they’ll have to pull more rabbits out of the hat for the rest of the 992 generation (notwithstanding the likelihood of a 1973 2.7 RS 50th anniversary tribute in 2023, which will probably be a GT3 RS manual with a ducktail).
05-24-2020, 03:40 PM
#217
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I expect that the 992.1 GT3 will have a 4.0L engine because:
(1) That’s sufficient to sell the car
(2) They need an upgrade to justify the higher price of the 992.1 GT3 RS - perfect opportunity to introduce the 4.2L engine for the street
(3) The facelift 992.2 GT3 will receive the 4.2L engine...
(4) ... and the 992.2 GT3 RS will need to receive something else - potential for (mild) hybridization)
If they start with the 4.2L in the pre-facelift GT3, they’ll have to pull more rabbits out of the hat for the rest of the 992 generation (notwithstanding the likelihood of a 1973 2.7 RS 50th anniversary tribute in 2023, which will probably be a GT3 RS manual with a ducktail).
(1) That’s sufficient to sell the car
(2) They need an upgrade to justify the higher price of the 992.1 GT3 RS - perfect opportunity to introduce the 4.2L engine for the street
(3) The facelift 992.2 GT3 will receive the 4.2L engine...
(4) ... and the 992.2 GT3 RS will need to receive something else - potential for (mild) hybridization)
If they start with the 4.2L in the pre-facelift GT3, they’ll have to pull more rabbits out of the hat for the rest of the 992 generation (notwithstanding the likelihood of a 1973 2.7 RS 50th anniversary tribute in 2023, which will probably be a GT3 RS manual with a ducktail).
05-26-2020, 07:48 PM
#219
I already said it's of course common. I'm just saying that it isn't some inherent law of physics.
You could say that ALL redlines are artificially set. They pick some point below the breaking point (hopefully) and paint a red stripe on the tachometer (and in modern cars program some sort of cutoff). Hopefully they engineer the engine not to break before peak power is achieved, but it certainly isn't a law of physics that that be the case. If you build your GT3 engine with its current power curve, but only put in crappy Pep-Boys piston rods, you'll have a situation where power keeps going up all the way to the redline (the one you ought to implement).
Conversely, you could make the intake runners longer, and/or change the cam timing (and/or whatever else it takes to move the torque curve to the right) and you would be moving the power curve to the right too, and peak would be higher up the rpm range, and have a higher value too. So power would keep climbing to redline, or redline would have to be raised to keep a similar relationship to peak power. In other words, increase the redline AND raise the peak torque rpm in equal measure, and you get a 9200-rpm engine with peak torque occurring a bit higher up the range and peak power increasing.
05-27-2020, 03:50 AM
#220
Really hoping for rear seats. I would love a GT car that I can drive with the kids.
My Carrera T rear seats get used all the time. As a Dad, you never know when you might be picking up a friend, making a school run, etc....
Doing so in a GT car, would be epic!!!
My Carrera T rear seats get used all the time. As a Dad, you never know when you might be picking up a friend, making a school run, etc....
Doing so in a GT car, would be epic!!!
The following 6 users liked this post by seis-speed:
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05-27-2020, 03:59 AM
#221
Burning Brakes
I already said it's of course common. I'm just saying that it isn't some inherent law of physics.
You could say that ALL redlines are artificially set. They pick some point below the breaking point (hopefully) and paint a red stripe on the tachometer (and in modern cars program some sort of cutoff). Hopefully they engineer the engine not to break before peak power is achieved, but it certainly isn't a law of physics that that be the case. If you build your GT3 engine with its current power curve, but only put in crappy Pep-Boys piston rods, you'll have a situation where power keeps going up all the way to the redline (the one you ought to implement).
Conversely, you could make the intake runners longer, and/or change the cam timing (and/or whatever else it takes to move the torque curve to the right) and you would be moving the power curve to the right too, and peak would be higher up the rpm range, and have a higher value too. So power would keep climbing to redline, or redline would have to be raised to keep a similar relationship to peak power. In other words, increase the redline AND raise the peak torque rpm in equal measure, and you get a 9200-rpm engine with peak torque occurring a bit higher up the range and peak power increasing.
You could say that ALL redlines are artificially set. They pick some point below the breaking point (hopefully) and paint a red stripe on the tachometer (and in modern cars program some sort of cutoff). Hopefully they engineer the engine not to break before peak power is achieved, but it certainly isn't a law of physics that that be the case. If you build your GT3 engine with its current power curve, but only put in crappy Pep-Boys piston rods, you'll have a situation where power keeps going up all the way to the redline (the one you ought to implement).
Conversely, you could make the intake runners longer, and/or change the cam timing (and/or whatever else it takes to move the torque curve to the right) and you would be moving the power curve to the right too, and peak would be higher up the rpm range, and have a higher value too. So power would keep climbing to redline, or redline would have to be raised to keep a similar relationship to peak power. In other words, increase the redline AND raise the peak torque rpm in equal measure, and you get a 9200-rpm engine with peak torque occurring a bit higher up the range and peak power increasing.
05-27-2020, 08:19 AM
#222
Burning Brakes
It looks like from the last video we get the same race bucket seats. I was hoping for something new but we will wait and see.
05-27-2020, 05:51 PM
#223
Rennlist Member
I expect that the 992.1 GT3 will have a 4.0L engine because:
(1) That’s sufficient to sell the car
(2) They need an upgrade to justify the higher price of the 992.1 GT3 RS - perfect opportunity to introduce the 4.2L engine for the street
(3) The facelift 992.2 GT3 will receive the 4.2L engine...
(4) ... and the 992.2 GT3 RS will need to receive something else - potential for (mild) hybridization)
If they start with the 4.2L in the pre-facelift GT3, they’ll have to pull more rabbits out of the hat for the rest of the 992 generation (notwithstanding the likelihood of a 1973 2.7 RS 50th anniversary tribute in 2023, which will probably be a GT3 RS manual with a ducktail).
(1) That’s sufficient to sell the car
(2) They need an upgrade to justify the higher price of the 992.1 GT3 RS - perfect opportunity to introduce the 4.2L engine for the street
(3) The facelift 992.2 GT3 will receive the 4.2L engine...
(4) ... and the 992.2 GT3 RS will need to receive something else - potential for (mild) hybridization)
If they start with the 4.2L in the pre-facelift GT3, they’ll have to pull more rabbits out of the hat for the rest of the 992 generation (notwithstanding the likelihood of a 1973 2.7 RS 50th anniversary tribute in 2023, which will probably be a GT3 RS manual with a ducktail).
06-01-2020, 03:03 PM
#224
Sorry...I didn't mean to suggest that it was easy. I'm just saying that that formula HIGHER REVS = DECLINING POWER is not some universal law of physics. People quite often raise the redline of an OEM engine, after doing whatever mods they do, and get more power. The factory redline is not some magical indicator beyond which power must decrease no matter what.
06-05-2020, 02:26 PM
#225
Rennlist Member
Wouldn’t it be great if Porsche included 5 lug as an option as they do on the GTS and Turbo.