Porsche911GTS'16

It does, on paper, but I have seen comments on RL in the past, trying to somehow say that the 991.1 GT3 RS (and 991 R) engine is better than the engine in the 991.2 GT3. Chris Harris' opinion, for whatever that is worth, is that the 991 R is "more special" because it is a numbered car and it has "bits and bobs" that you cannot get in a 991.2 GT3 touring. The lightweight roof, the single mass flywheel, the number badge, etc. But, to him, anyway, the 991.2 GT3 Touring is the better car. Again, just his opinion, for whatever that is worth, which may be nothing to many on RL. My personal opinion is that I would love to have an R but it is out of my price range and given the choice between a pre-owned R and a 991.2 PTS Touring to my specs, I would take the later - which is what I did. And the beauty of the Touring is that it is not a "numbered" car, so I have no qualms driving it, like, a lot. I have never seen an R in the wild in LA. I have seen a handful of Tourings, both 991.2 and 992.

rk-d

I have an RS lightweight flywheel in my 993 and it was a pretty dramatic difference in feel compared to stock. Lightning fast revs and heel/toe became second nature and much easier to match. It also sounds like a bucket of bolts.

Does the 911R sound like that? It’s almost unavoidable in a true lightweight flywheel. Typically folks will use more of a mid-weight to get some of the feel of a lightweight flywheel without the noise ( I believe Singer does this).

The second question is how heavy is a 991.2 GT3 flywheel, comparatively speaking? Because in driving, it doesn’t feel particularly heavy.

3-Pedals

I drove a speedster recently which has the 992 engine and lighter flywheel 992 GT3 has. I cant tell you how awkward it was. Now I know what people are talking about revs dropping. That combination wasnt made for manual period. Revs drop so quickly and not in a good way upshifting. Rev matching does have that issue everyone talks about where ECU limits revs and you have to double throttle. I much prefer the 991.2 manual. And the engine revving quickly to me didnt feel advantageous.

BusDriver

Regarding the engine…
The engine in the 911R is almost identical to the one in the 991.1 RS, but not 100pct identical. The 911R runs higher compression (13.2:1 vs 12.9) and different cam timing.

Regarding performance vs a manual GT3…
The 911R’s response is quite a bit better than a manual GT3, due its light flywheel and lighter weight. Also the 911R has more mid-range torque than the GT3, and is more slippery through the air. The improved response is obvious from these rolling start acceleration tests. All from Car and Driver magazine:

Rolling starts. 5-60mph, 30-50 in 6th gear, 50-70 in 6th gear

911R. 4.0 sec, 6.4 sec, 5.6 sec

991.2 GT3 manual. 4.4 sec, 7.2 sec, 6.1 sec

992.1 GT3 manual. 4.2 sec, 7.5 sec, 7.0 sec (Cup2R tires helped 5-60)

The difference is even more obvious in lower gears. The 911R immediately puts 4-5 car lengths on my 992 GT3 manual, if both cars are punched side-by-side from 2nd or 3rd gear.


Still while the 911R is the ultimate, one cannot ignore the fact that a 911R costs about 2x of a GT3 Touring. Both are fantastic cars and anyone be very lucky to have either. And extremely lucky to have both.





C&D data links:
https://www.caranddriver.com/reviews...d-test-review/
https://www.caranddriver.com/reviews...l-test-review/
https://www.caranddriver.com/reviews...y-the-numbers/

rk-d

You have to be quick on the upshift with a LWFW. If you're slow, it will be clunky.

Quick revs are helpful with heel/toe - you can more easily get the engine speed in range with a quick stab compared to a regular flywheel. That's my experience in the 993 at least.

The lighter flywheel helps the car feel faster from a stop and is a similar effect to putting on lightweight wheels.

The main downside is noise and it's a lot less commuter friendly. Sucks in traffic.

3-Pedals

The problem is you cant really do that that well when you are driving 6 or 7/10ths around town. It does become jerky. What was really interesting to me was how different it felt from a 991.2 GT3.

On a side note, I really disliked how quiet speedster sounded. The engine sounds so different than the GT3. I’m guessing thats how 992 GT3 also sounds like. There is none of that metallic buzzsaw sound we get from 8000 rpm till 9000 rpm.

GrantG

The 992 GT3 Manual blips the throttle on upshifts when using Auto Rev Match to make smooth shifts up or down.

3-Pedals

I know. So does 991.2. But the whole fun point (for me at least) is when I’m doing it myself.

rk-d

I dunno. Never driven a 911R.

I don’t drive my 993 beyond 7/10. It’s a street car only. If you don’t own a car with a lightweight flywheel, then it’s different. Hopping into a car you’ve never driven before with a LWFW and you will not be smooth. For me, it takes time to learn all the quirks of a MT/clutch for any particular car. A MT with LWFW takes a little longer to master.

Give it some time and it becomes second nature. If anything I’m smoother in the 993 than I am in my Touring.

3-Pedals

My comments were in regards to speedster (991.3) which has the 992 GT3 engine (minus CF sump) and similar lighter rotational characteristics. Not sure how much freer revving 911R is.

GrantG

The behavior is definitely different in the 992 on upshifts (not no-lift shifts).

But doing it yourself is cool too

Bruce911_

The 991.2 does not blip the throttle on upshifts only downshifts. It is different in the 992 where it does on both. I was wondering why the 992 did that but makes sense based on the previous comments. It’s not needed on the 991.

unotaz

Rev dropping???

Try a Carrera GT, then you will know what revv dropping really means.

The engine rev characteristic in the 991 Speedster is really lazy in comparison, even slower than the rev drop off compared to the R.

unotaz

Incorrect. When you hit the auto blip button on the 991.2, on the upshift, the computer will intentionally slow down the rev drop on the upshift, to make it a "smoother shift" for the idiot novice drivers

Bruce911_

It may slow down the rev drop but it does not blip the throttle on upshifts as it does on the 992. On the 992 you hear a distinct blip which is not present on the 991. It may be semantics but slowing down the rev drop is not the same as the way it blips the throttle on the 992.