718 GT4?
#1531
Addict
Rennlist Member
Rennlist Member
Porsche has managed to achieve pretty excellent torque/L efficiency with the new 4.0L engine (GT3 = 84.75 ft.lbs/L; GT3 RS 86.5 ft.lbs/L.) The GT4 3.8L engine was 81.3 ft.lbs/L; nothing to sneeze at, but room for improvement. With the bump in displacement and a small improvement in breathing, there's no reason a GT4 4.0 couldn't have 330 ft/lbs of torque, probably lower down in the rev range.
Lowering the gearing could be a much bigger improvement in torque to the ground than 6% as gears works as a torque multiplier. 10% improvement would be easily attainable through gearing, but impossible with 4.0L NA motor alone. Of course, the best outcome would be from a combination of more torque, a higher redline, and better gearing made possible from the higher redline (as achieved in GT3 and RS).
#1535
Rennlist Member
Those PFC steel racing brakes are simply amazing. Out performance any street brakes. PCCB, or steel or the new coated ones. Not even close.
#1536
#1539
Rennlist Member
Can't quite tell you that. The GT4CS have the PFC brakes as standard.
When I bought my ClubSport, I purchased the Spares package for US$9500. Consists of 2 complete sets of rotors, and 4 complete sets of brake pads.
The original sets of pads that shipped with the car lasted around 5500km track miles, it was down to 20%. I had them replaced together with new rotors.
Size wise, they are 380mm both front and rear, 380mmx32mm for front and 380mm for rear.
When I bought my ClubSport, I purchased the Spares package for US$9500. Consists of 2 complete sets of rotors, and 4 complete sets of brake pads.
The original sets of pads that shipped with the car lasted around 5500km track miles, it was down to 20%. I had them replaced together with new rotors.
Size wise, they are 380mm both front and rear, 380mmx32mm for front and 380mm for rear.
#1540
Rennlist Member
I get such a kick out of reading these posts!
sitting hear laughing to myself
So many trying to play Sherlock Holmes, when we have our own in-house detective, in Woopsie
Personally I think Porsche is eating this up sending out cars with exhausts that are muffled and disguised
This creates all the speculation and fervor...
sitting hear laughing to myself
So many trying to play Sherlock Holmes, when we have our own in-house detective, in Woopsie
Personally I think Porsche is eating this up sending out cars with exhausts that are muffled and disguised
This creates all the speculation and fervor...
#1541
Instructor
http://demanmotorsport.com/services/...-0-gt4-upgades
Perhaps you drive a 4.0L torquey car differently?
Last edited by ralphmusic; 05-03-2018 at 04:38 AM. Reason: Add driving style comment
#1542
Instructor
DeMan Motorsports can do that for you using other Porsche parts. There were videos posted a ?year? ago about a group visit to DeMan - very interesting to hear their story
#1543
Yes, I remember that well, but that solution was using the 997GT3RS calipers and is far from ideal. There is still barely any gap so stones will get caught and it will suffer poor cooling a lot of heat soak issues.
#1544
Rennlist Member
I get such a kick out of reading these posts!
sitting hear laughing to myself
So many trying to play Sherlock Holmes, when we have our own in-house detective, in Woopsie
Personally I think Porsche is eating this up sending out cars with exhausts that are muffled and disguised
This creates all the speculation and fervor...
sitting hear laughing to myself
So many trying to play Sherlock Holmes, when we have our own in-house detective, in Woopsie
Personally I think Porsche is eating this up sending out cars with exhausts that are muffled and disguised
This creates all the speculation and fervor...
Last edited by Five12Free; 05-03-2018 at 08:04 AM.
#1545
Instructor