OFFICIAL 991.2 GT3 RELEASE *Confirmed 500HP 4.0 & Manual option*
03-10-2017, 11:20 PM
#991
Rennlist Member
^Andrea
First, thanks for your excellent camera work the last two days!
Do you know if the car is in the normal road mode (no front end lift)?
I just measured my 991RS without lift, and full extra cap gas tank, and it is 100mm. I thought I read new GT3 is lower, and strongly recommends lift.
Safe travels
First, thanks for your excellent camera work the last two days!
Do you know if the car is in the normal road mode (no front end lift)?
I just measured my 991RS without lift, and full extra cap gas tank, and it is 100mm. I thought I read new GT3 is lower, and strongly recommends lift.
Safe travels
03-10-2017, 11:24 PM
#994
Rennlist Member
^Andrea
First, thanks for your excellent camera work the last two days!
Do you know if the car is in the normal road mode (no front end lift)?
I just measured my 991RS without lift, and full extra cap gas tank, and it is 100mm. I thought I read new GT3 is lower, and strongly recommends lift.
Safe travels
First, thanks for your excellent camera work the last two days!
Do you know if the car is in the normal road mode (no front end lift)?
I just measured my 991RS without lift, and full extra cap gas tank, and it is 100mm. I thought I read new GT3 is lower, and strongly recommends lift.
Safe travels
03-10-2017, 11:55 PM
#999
Three Wheelin'
Originally Posted by bronson7
Does it not look like a fair amount of water could collect at the base of the wing body support, directly behind the air scoops?
03-11-2017, 02:27 AM
#1001
Three Wheelin'
Originally Posted by STG
This guy knows what's up 
03-11-2017, 03:51 AM
#1003
Just a small summary of the main upgrades/changes on the engine that I am aware of:
-hydraulic lifter to solid lifter
-crank drilled to allow oil to con rod bearing
-less parasitic loss due to lower oil pressure
-3.8l to 4.0l and still revs to 9k....means even higher piston speed
-from single to dual mass FW
-two intake flappers for better response
-same engine as the the new Cup car
Very impressed....looks like the new engine has more than addressed the well known short comings of the .1 gen.
Can't wait to find out what they do to the .2 RS!
-hydraulic lifter to solid lifter
-crank drilled to allow oil to con rod bearing
-less parasitic loss due to lower oil pressure
-3.8l to 4.0l and still revs to 9k....means even higher piston speed
-from single to dual mass FW
-two intake flappers for better response
-same engine as the the new Cup car
Very impressed....looks like the new engine has more than addressed the well known short comings of the .1 gen.
Can't wait to find out what they do to the .2 RS!
03-11-2017, 05:34 AM
#1004
Nordschleife Master
They went on about the crankshaft being spaceship steel same as the 919. But really that was no big deal. It wasn't lighter or anything as all steel pretty much has the same mass. It was a bit stronger because of multiple heat treating process in manufacture. But how often do you get a "my normal crankshaft isn't strong enough" problem? Probably marketing speak mostly.
The new GT3 engine is definitely better than the RS/R engine, which was very similar to the GT3.1 engine. This is due to significant heads/valvetrain and oiling/oil pressure improvements.
In one interview they say there is now headroom for improvement so the exciting question is: what will they do for the new RS? Will it get 9k to give it more kudos than the RS.1??
The new GT3 engine is definitely better than the RS/R engine, which was very similar to the GT3.1 engine. This is due to significant heads/valvetrain and oiling/oil pressure improvements.
In one interview they say there is now headroom for improvement so the exciting question is: what will they do for the new RS? Will it get 9k to give it more kudos than the RS.1??
All 991, 997 and 996 GT3s/RS had hydraulic valve trains for street application. All stout motors.
I am unclear as to whether the new .2GT3 has same exact motor as the Cup, which I doubt, likely based off that motor with same valve train and some components but if exactly the same the rebuild interval for the new Cup is 100 hours.
Proof of a solid valve train that doesn't require adjustment (a first) will be in the pudding. Most engines have their issues. Doubt this one will be any different.
AP also told us a few years back that flappy paddles were for grandmas. He also stated in one of the vids on the new GT3 he didn't receive an R. I found a couple of articles discussing AP's R. Hmmmm. Maybe AP says whatever works at the time?
Finally, 991RS and 991R don't have factory rebuild intervals.
03-11-2017, 08:31 AM
#1005
Originally Posted by home7271
Just a small summary of the main upgrades/changes on the engine that I am aware of:
-hydraulic lifter to solid lifter
-crank drilled to allow oil to con rod bearing
-less parasitic loss due to lower oil pressure
-3.8l to 4.0l and still revs to 9k....means even higher piston speed
-from single to dual mass FW
-two intake flappers for better response
-same engine as the the new Cup car
Very impressed....looks like the new engine has more than addressed the well known short comings of the .1 gen.
Can't wait to find out what they do to the .2 RS!
-hydraulic lifter to solid lifter
-crank drilled to allow oil to con rod bearing
-less parasitic loss due to lower oil pressure
-3.8l to 4.0l and still revs to 9k....means even higher piston speed
-from single to dual mass FW
-two intake flappers for better response
-same engine as the the new Cup car
Very impressed....looks like the new engine has more than addressed the well known short comings of the .1 gen.
Can't wait to find out what they do to the .2 RS!
E engines = disaster
F engines = improved to fix E shortcomings
G0/G6 engines = reliable
991.2gt3 engines = race proven and 5 year of feedback of this new platform.