Maybe it's time for an updated rundown of the full setup?

 

Nice pic!!!

Are you thinking of adding an additional 5" to the front splitter? or 5" in total?

 

I have been doing many changes over time so where I am today is not where I started, but mostly it has been testing tires and suspension setups and adjustments. Reached a point where lack of downforce became pretty evident. It is important for me to keep this car drivable on the road or else I would have done things slightly different.

Suspension & Chassis:
- KW 3 way Competition Manthey
-Tarrett front "cup" control arms, front shims 14mm each side, axle spacers, and a couple of rear control arms. I posted a picture some time back here.
- stock sway bars and drop links
- Heigo FIA 4 point roll cage
- Battery: Liteblox 26 (not mounted currently), beautiful piece and very light
-Oz Superforgiatta wheels 19" offset same as 997GT2RS
- Tires, tried about all of the high performance tires, Hoosier, Trofeo, Cup2, Pirelli slicks DH hard compound
- Brakes steel stock discs, I use often GT3 pads, also used Endless MX72 and have a set of Pagid RSX. Haven't been convinced yet to upgrade my brakes, I think it is a black box and there is not enough tangible information.as to the lap time benefits.

Engine, mainly all done with Sam@Bydesign
- Upgraded VTGs 68mm
-Kline full Inconel exhaust, headers, high performance cats
- By Design Intercoolers 4.5"
- Cobb tune from Sam.. This has been a journey with Sam, we have been exchanging datalogs and files for a very long time, with views to keep IATs down as much as possible. I have two great maps currently, one with 17-19 psi and one with 21-23 psi. The car is faster than previous 25 and 28psi files. Kept torque down as much as possible to help PDK longevity, keep the car drivable in corners and keep temps under control
- IPD intakes ( to install meth nozzles)
- Methanol Snowperformance
- IC Water spray Snow Performance
- Reinforced rods.. Some of these early engines had weaker cylinder sleeves

Body
- Front GT2RS bumper
-Rear Gt2RS decklid and wing
I did not do the GT2RS fenders although I am a strong proponent, I just did not have time to do more on the bodywork nor do branding before my event.

To be fitted soon are additional aerodynamic pieces that were built in the UK according to my specs, custom made front splitter, larger rear wing tested in wind tunnel to 1400N downforce at 100mph and custom designed uprights. Rear GT2RS diffuser also.

Full interior except rear seats to fit the roll cage and weighs 1609 Kgs no driver and with about 15-20ltrs fuel.

Suspension setup has been critical, adjusting compression and rebound, ride height etc.. makes a big difference. The car handles extremely well and totally neutral. Some oversteer in slow corner exits and Traction Control that keeps killing my exit speeds too often. Next research will be about finding a way to reprogram it to make it less intrusive, there is easily 1-2 seconds per lap currently to be gained. I do not have the reflexes or cojones at my age to drive this car without TC. Pretty obvious in the video below from a testing day, about 2-3 seconds slower than my fastest lap.. I am on full throttle but the car bogs and takes time to accelerate.

 

Thanks Pdtp! The splitter will fit under the GT2RS splitter. and will have all the hardware to secure a solid mount to the chassis. Yes about 5" further than the GT2RS splitter.

 

Certainly an impressive machine and driving !!!...Please overlook my ignorance but how would it perform against a GT2 RS ?

 

@Jean Which tire do you find the fastest?

 

Thank you Nanook. On the Bahrain F1 GP circuit, 3 seconds faster than a Pro driven GT2RS with Cup2 R tires.. I suspect in better hands it would be 4-5 seconds faster than a GT2RS.on Cup 2R tires. Other references:

- 5 s faster than a Radical (Pro driver)
- 5 s faster than 720S
- 6 s faster than 650S (Pro driver)
- 6 s faster than Viper ACR Extreme
- 7s faster than 488

Miky360, I find Trofeo R to be fastest, initially close to the Hoosier but the Hoosier falls off much faster and has a softer sidewall, not ideal for our heavy cars.

 

Cool 😎
Im planning to do the same.
Will be replacing my 2019 GT3 RS WP with a 992 TTS CAB as soon as i am able to order one.
From my perspective I did my thing with the RS.... I have a few more tracks to tackle and cover to my satisfaction and I will be done....
I rented 991.2 TTS cab and found it to be a blast ( minus the sound and RPM range☹️) .... but i have come to believe that the TTS Cab will be more fun all around.. !
🤙🏼😀

 

Looks fantastic. Will you make it adjustable?

 

VERY impressive build Jean !

Raceweight ?

 

Not really, but the GT2RS splitter on which it will be mounted can be raised or lowered a bit.. The plan is to maximize front downforce and then adjust the rear to balance. The rear wing mounting tabs have several adjustment positions similar to a Cup car and added a guerney, which I could always remove if needed. Few more things can be done to the underbody in case there is a need..

Onfire, the car was corner weighed at 1609 Kgs without driver, not a lightweight car for sure. That's another area that could be worked on with good results but I am not going there, the RSR fills that role

 

Hi guys,

I have HRE 101LW in 21 inch.
Is it a bad idea to run them on the track?

I am looking for an alternative set for the track with the best R tyres possible. Am I better off buying a set of say 18 or 19" wheels. Would rather 20" (or keep my 21s! haha)

Sorry for the newbie questions. I am new to this.

Thanks.

 

Bigger wheels = more weight. Also bigger tires more expensive to replace. Go with the smallest wheel that will fit around your brake calipers. They also get beat up on the track so probably don’t really want nice expensive wheels. And some R compound tires - Hoosiers, Toyo R888R or Nitto NT01.

 

It really depends on how hard core you want to go. I think for the 991 TTS the easiest setup is 20" in the 2019 TTS wheel sizes or 20x9 front and 20x12 rear. You can run several different 265/20 front tires and 325/20 rear tires in the Cup2 spec. Read earlier in this thread for that discussion.

If you wanted to go to 19" wheels to have a wider list of options, the work to be done is getting the wheels to fit over the front calipers/suspension (I think there are a couple of wheels that could fit without rubbing) and then ensuring your tires on both axles have the same diameter as the stock size. The GT2 RS does come with 21" rear wheels, but I am not sure they will fit under a TTS fender without some serious tweaking. Under those circumstances, you could run the GT2 RS wheel and tire setup, including the Cup2 R tires.