Prospective 981 GT4 Owners Discussion Forum.
Discussion
fioran0 said:
No, you are indeed reading it correctly. They have the same gearing according to the data sheets I have from Porsche for each car. The other point to note is the ratios relative to those in the 996 and 997 GT3's; they do not tally with some of the assertions being given in this thread.
What may be more interesting is that the optimal shift points for the GT4 occur below redline in gears 3,4,5. For the Cayman R they occur below redline in gears 4 and 5.
Additionally, the 2nd gear ratio used hurts the Cayman R far more than it does the GT4.
Take a look at tyre/ wheel combo's and max speed in each gear. What may be more interesting is that the optimal shift points for the GT4 occur below redline in gears 3,4,5. For the Cayman R they occur below redline in gears 4 and 5.
Additionally, the 2nd gear ratio used hurts the Cayman R far more than it does the GT4.
and as you have noted best gear change point is not red line.
Some times you just have to drive the car in real life vs looking at on paper stats.
Where optimal shifts points seem much higher driving a GT3 in real life, and ofcourse wanting to red line the thing.
Edited by PorscheGT4 on Sunday 5th July 10:14
I've not had any issue with the Sag ratios.jackwood said:
That's just bizarre. Did anyone complain about R ratios?
I always wonder if people pick holes in things because they feel they have to complain about something.
Did you ever run thrust figures for all these cars and overlay the results?
Absolutely. It's quite interesting. I always wonder if people pick holes in things because they feel they have to complain about something.
Did you ever run thrust figures for all these cars and overlay the results?
Obviously from a point of maximising pure acceleration, both cars have gears that are too long but this is typical of modern road cars. Performance can be measured in many ways, and the balance just now is that fuel economy and corresponding emissions performance takes some precedence over accelerative performance.
When viewed from a perspective of UK road use and assuming one wants the maximum acceleration available at all times, then both cars have 2 speed gearboxes with 4 overdrive ratios. It is a ludicrous situation but a common one. Thankfully most owners find outlets to go above 70mph (track days etc) so it's not quite so terrible.
I think you have a point regarding the need to have an angle in motoring journalism.
The other point worth consideration is that perceptions in a car are entirely formed by the subjective. The GT4 will see redline in a shorter time than the Cayman R. It will therefore achieve higher speed in a shorter time.
It may simply be the effect of running out of road more quickly awakens ones awareness of the gear you are in.
Running out of road in N seconds and realising you are in third would certainly add to a sense that gears were too short compared to the same thing happening in N+30 seconds for example. Even if objectively the gearing was no different.
I haven't done re thrust and the R. I may do it later though for you if I get time.
fioran0 said:
Absolutely. It's quite interesting.
Obviously from a point of maximising pure acceleration, both cars have gears that are too long but this is typical of modern road cars. Performance can be measured in many ways, and the balance just now is that fuel economy and corresponding emissions performance takes some precedence over accelerative performance.
When viewed from a perspective of UK road use and assuming one wants the maximum acceleration available at all times, then both cars have 2 speed gearboxes with 4 overdrive ratios. It is a ludicrous situation but a common one. Thankfully most owners find outlets to go above 70mph (track days etc) so it's not quite so terrible.
I think you have a point regarding the need to have an angle in motoring journalism.
The other point worth consideration is that perceptions in a car are entirely formed by the subjective. The GT4 will see redline in a shorter time than the Cayman R. It will therefore achieve higher speed in a shorter time.
It may simply be the effect of running out of road more quickly awakens ones awareness of the gear you are in.
Running out of road in N seconds and realising you are in third would certainly add to a sense that gears were too short compared to the same thing happening in N+30 seconds for example. Even if objectively the gearing was no different.
I haven't done re thrust and the R. I may do it later though for you if I get time.
all pointless comments if you don't take into account the larger wheel/tyre combo from the 987 platform to the 981 platform ! the speeds in gears are 8 to 9 mph more in the 981 platform with the same ratio's per gear.Obviously from a point of maximising pure acceleration, both cars have gears that are too long but this is typical of modern road cars. Performance can be measured in many ways, and the balance just now is that fuel economy and corresponding emissions performance takes some precedence over accelerative performance.
When viewed from a perspective of UK road use and assuming one wants the maximum acceleration available at all times, then both cars have 2 speed gearboxes with 4 overdrive ratios. It is a ludicrous situation but a common one. Thankfully most owners find outlets to go above 70mph (track days etc) so it's not quite so terrible.
I think you have a point regarding the need to have an angle in motoring journalism.
The other point worth consideration is that perceptions in a car are entirely formed by the subjective. The GT4 will see redline in a shorter time than the Cayman R. It will therefore achieve higher speed in a shorter time.
It may simply be the effect of running out of road more quickly awakens ones awareness of the gear you are in.
Running out of road in N seconds and realising you are in third would certainly add to a sense that gears were too short compared to the same thing happening in N+30 seconds for example. Even if objectively the gearing was no different.
I haven't done re thrust and the R. I may do it later though for you if I get time.
The GT4 might see redline in a longer time as it does 85mph in 2nd ! not a shorter time as you state !
The R does 76mph at 7,500 rpm which is maxed out !
PorscheGT4 said:
Take a look at tyre/ wheel combo's and max speed in each gear.
and as you have noted best gear change point is not red line.
Some times you just have to drive the car in real life vs looking at on paper stats.
Where optimal shifts points seem much higher driving a GT3 in real life, and ofcourse wanting to red line the thing.
Looking at vehicle speed in gear at red line, corresponding RPM post gear change and the same with the optimal shift points was part of the initial analysis.and as you have noted best gear change point is not red line.
Some times you just have to drive the car in real life vs looking at on paper stats.
Where optimal shifts points seem much higher driving a GT3 in real life, and ofcourse wanting to red line the thing.
Edited by PorscheGT4 on Sunday 5th July 10:14
Tyre sizes were used in this.
As mentioned, for maximum acceleration the optimal shift points in the Cayman R turned out to be lower than red line for 4th and 5th gears. It was at redline for the others.
Edited by fioran0 on Sunday 5th July 14:20
fuuuck! After seeing that over hang and the size of the kerb its scraping I need to hurry up and move!
5 speed bumps leading into village where I live not monsters but big enough. We are looking to move once we find somewhere and seeing that I think to hurry up. Other wise I will be getting through allot of front trim, taking up the whole road to go over each one or reversing the final half a mile to the house.
On the plus side it looks nice and aggressive in person with a such low stance.
5 speed bumps leading into village where I live not monsters but big enough. We are looking to move once we find somewhere and seeing that I think to hurry up. Other wise I will be getting through allot of front trim, taking up the whole road to go over each one or reversing the final half a mile to the house.
On the plus side it looks nice and aggressive in person with a such low stance.
Anybody heard anything regarding the bucket seats. Last I heard a week or so ago the dealer had changed his mind. A week prior to that he said that the bucket seats at £2226 were available for UK cars without delay until August and from then the LWB £1907 would be available without delay for builds after August. Last week he changed the story and said that as of now only the bucket seats £2226 are available without any delays.
Any other news?
Any other news?
cymario said:
Anybody heard anything regarding the bucket seats. Last I heard a week or so ago the dealer had changed his mind. A week prior to that he said that the bucket seats at £2226 were available for UK cars without delay until August and from then the LWB £1907 would be available without delay for builds after August. Last week he changed the story and said that as of now only the bucket seats £2226 are available without any delays.
Any other news?
+1 I'm being told exactly thisAny other news?
Are you with a London OPC?
k this. Keep pissing me about an I'm just gonna have one of each!cymario said:
Anybody heard anything regarding the bucket seats. Last I heard a week or so ago the dealer had changed his mind. A week prior to that he said that the bucket seats at £2226 were available for UK cars without delay until August and from then the LWB £1907 would be available without delay for builds after August. Last week he changed the story and said that as of now only the bucket seats £2226 are available without any delays.
Any other news?
I've been told they haven't had any news on the seats when they are available from Any other news?
Hey guys - I'm late to the party, though was about time I got involved after all this lurking and obsessing for this car!!!
My allocation was confirmed about a month ago for the GT4 after a long wait and plenty of messing around.
Im all specked up for a November build....Carmine Red, Black wheels, THE all important LWB confirmed with a possible 10 week delay + much more!!
This will be my first Porsche, to say I'm excited is a major understatement!!!
My allocation was confirmed about a month ago for the GT4 after a long wait and plenty of messing around.
Im all specked up for a November build....Carmine Red, Black wheels, THE all important LWB confirmed with a possible 10 week delay + much more!!
This will be my first Porsche, to say I'm excited is a major understatement!!!
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