718 GT4?
01-04-2019, 07:39 AM
#5011
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There are spy pics of 718 Cayman with the rear diffuser and exhausts almost identical to the GT4 mule which was labeled as the 718 "T" because it doesn't have the rear wing. Now the T has been introduced and it has a standard rear diffuser and exhaust, it's clear this test car was not the T. Which one was it then?
Maybe a GT4 touring?
Maybe a GT4 touring?
01-04-2019, 07:50 AM
#5012
Is the 718 Clubsport Trackday base car the basis for homologation of the 718 GT4 racecars thus disassociating the road 718 GT4 from the homologation process?
IF Yes, nothing in theory (but not economics) need be common between Clubsport Trackday car and road car.
Just a thought..
IF Yes, nothing in theory (but not economics) need be common between Clubsport Trackday car and road car.
Just a thought..
01-04-2019, 07:53 AM
#5013
The 991.1 GT3 had the same bore as the 981 GT4. The 991.2 GT3 has the same bore are the 991.2 GT3. As tcsracing1 had said in an earlier post, the 982 GT4 shares its engine case with the 991.2 GT3. The GT4 has a reduced stroke and redline version of the 991.2 GT3 motor. It is a different engine, not just the old one with X51, despite having similar performance specs to the old X51 motor.
01-04-2019, 08:39 AM
#5015
Drifting
So let’s summarize what we have learned; GT4 CS is freaking awesome. However it has absolutely nothing in common with and gives zero information as to the road going GT4. Now, what’s up with the 992 GT3?
01-04-2019, 08:53 AM
#5016
Instructor
As mentioned by those that own GT4CS cars, the engine in the street version will be the same. A very nice interative upgrade from the 981 GT4, which was never intended to be drastically different (.1 to .2 -like).
Regarding the 992 GT3, I’m sure there is a 992 GT3 thread floating around somewhere.
01-04-2019, 09:00 AM
#5017
Rennlist Member
I was initially underwhelmed that it's just a warmed over 981 GT4 with a few simple X51 mods. However, I've now realized that despite similar performance figures, this is not just the old engine with X51, but rather a downgraded 991.2 GT3 motor. It shouldn't really matter, but emotionally it makes me feel a little better.
More importantly, beyond the engine upgrades, the composite material weight reduction, suspension, and aero upgrades have been significant according to CJ's post on the 718 forum. tcsracing1 also seemed quite pleased with the new car according to his various comments. Copying CJ's post over to here:
Give me a 718 Spyder with this motor, this suspension, and a manual transmission, and I'll be a happy camper, even if it's not the lightweight mid engined GT3 we dreamed of.
Everyone is talking about horsepower in this thread, but no one's talking about torque. Given the fact that we're not going to be wringing out our Spyders on the track, but instead running around on mountain roads, it seems to me torque and gearing are the two things that are going to determine whether or not the new car feels substantially different from the 981. It looks to me like the torque rating is the same as the 981, so unless the character of the motor is drastically different, or the gearing is drastically different, I'm in the camp right now of holding on to the 981 and saving about $30,000.
Last edited by Selo; 01-04-2019 at 09:17 AM.
01-04-2019, 09:19 AM
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01-04-2019, 09:37 AM
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Hell, if it goes on much longer, the possibility of the 718 GT4 Club Sport homologation being based upon the no longer in production 981 GT4 starts to become more plausible. (One involves believing that it's based on a road car whose production only exists in the future, the other involves believing it's based on a car whose production only exists in the past).
01-04-2019, 09:41 AM
#5020
As for the homologation on the 981, each manufacturer can homologate based on one model. They’ve already homologated the 981 and can’t use it again. Also see the previous paragraph of when cars actually need to be delivered.
In in order for Porsche to race the new GT4, they have to homologate it and to do that they have to build cars during the first year of competition. The SRO knows this is a new car and expects Porsche to produce a new street car. The 718 is basically a 981 anyway so there’s that.
01-04-2019, 09:54 AM
#5022
Everyone is talking about horsepower in this thread, but no one's talking about torque. Given the fact that we're not going to be wringing out our Spyders on the track, but instead running around on mountain roads, it seems to me torque and gearing are the two things that are going to determine whether or not the new car feels substantially different from the 981. It looks to me like the torque rating is the same as the 981, so unless the character of the motor is drastically different, or the gearing is drastically different, I'm in the camp right now of holding on to the 981 and saving about $30,000.
The new car could have identical peak torque, and still feel completely different if that torque is produced higher up the rev range. Based on the numbers seen so far, I expect the new engine to have significantly more top end sparkle, which is what the original lack. It doesn't need any additional torque whatosever. It just needs a different style of power delivery. Which it looks as though it is getting.
01-04-2019, 10:00 AM
#5023
I disagree fairly violently!
The new car could have identical peak torque, and still feel completely different if that torque is produced higher up the rev range. Based on the numbers seen so far, I expect the new engine to have significantly more top end sparkle, which is what the original lack. It doesn't need any additional torque whatosever. It just needs a different style of power delivery. Which it looks as though it is getting.
The new car could have identical peak torque, and still feel completely different if that torque is produced higher up the rev range. Based on the numbers seen so far, I expect the new engine to have significantly more top end sparkle, which is what the original lack. It doesn't need any additional torque whatosever. It just needs a different style of power delivery. Which it looks as though it is getting.
01-04-2019, 10:15 AM
#5024
Rennlist Member
I disagree fairly violently!
The new car could have identical peak torque, and still feel completely different if that torque is produced higher up the rev range. Based on the numbers seen so far, I expect the new engine to have significantly more top end sparkle, which is what the original lack. It doesn't need any additional torque whatosever. It just needs a different style of power delivery. Which it looks as though it is getting.
The new car could have identical peak torque, and still feel completely different if that torque is produced higher up the rev range. Based on the numbers seen so far, I expect the new engine to have significantly more top end sparkle, which is what the original lack. It doesn't need any additional torque whatosever. It just needs a different style of power delivery. Which it looks as though it is getting.
01-04-2019, 10:45 AM
#5025
Everyone is talking about horsepower in this thread, but no one's talking about torque. Given the fact that we're not going to be wringing out our Spyders on the track, but instead running around on mountain roads, it seems to me torque and gearing are the two things that are going to determine whether or not the new car feels substantially different from the 981. It looks to me like the torque rating is the same as the 981, so unless the character of the motor is drastically different, or the gearing is drastically different, I'm in the camp right now of holding on to the 981 and saving about $30,000.