z06x60z

I know that the Z outruns the Carrera S in a quarter mile, but how come it loses from a roll 100-160 mph? They both have the same horsepower and I believe the weight is the same also. Why do German cars in general have more top end? Are their engines more efficient or is it the gearing in the transmission or diff?

http://www.automobile-catalog.com/

Is a great site and they have almost every car. I like to look at 0-150MPH as that tells you how fast a car really is. Many cars can win from a dig but on the highway they lose.

I know my car is about 24 seconds 0-150 while the Carrera S seems to be 21.6. I just don't get it.

http://fastestlaps.com/cars/porsche_991_carrera_s.html

mchicia1

"11.8 s @ 119 mph"

Your z does not run outrun it in the 1/4 mile.

The average stock z time is 12.4 @ 116.

Yes, people have done hero runs and gotten into the 11's stock with 118ish traps. I don't consider that the norm, however.

z06x60z

www.porsche.com lists 0-60 as 4.3s for the manual and 3.9-4.1 with the pdk. They did not list a 1/4 mile time.

Is the 11.8s 1/4 mile time correct for the Carrera S or is the website wrong? Also why is this car faster when the HP and the weight are the same with the C5 Z06? I don't understand why it beats a C5 Z06 from a roll.

C5Dobie

A carerra S does NOT run the 1/4 in 11.8 - come on, enough German kool aid. I've driven one extensively (4S cabriolet black edition) and it is not faster than my 03 Z. Its a mid to high 12 second car w/ a trap in the 112-115 range depending on manual vs. PDK and launch. With rear weight bias, AWD, and that slick PDK tranny 0-60 is very quick...but a good driver in a C5 Z can come close to 60 and should always be passing it through the 1/4 and beyond. German cars do tend to have taller gearing because of zee autobahnnn, but that's typical. Tall gearing and no torque (except for MB)

http://www.motorweek.org/reviews/roa...11_carrera_4s/

http://www.caranddriver.com/reviews/...dk-test-review

German kool aid tastes like used motor oil I heard, so put it down...

z06x60z

I am talking about the Carrera S not the 4S. The 4S is AWD and would lose from a roll.

This tall gearing you are talking about. Is it in the transmission or the diff? What could I do to my Z to improve that? Change the diff ratio or change the transmission?

C5Dobie

still the carerra S is not going to be THAT much faster.

Breze84

Bench racing like a boss up in this bitch... Carrera S is a low 12 second car, Never ran one ever when I was stock So I have no idea. I wouldn't go by what that mag says, Best thing to do is run one...

123sugey

Exactly..,, run one after a set if headers and 3:90 rear gears and it would be a no contest race to anything under 160 or so

z06x60z

I did run one and it pulled car lengths on me with a passenger. 4th gear feels sluggish as hell in my Z. I cant do headers in California. I am thinking about supercharging my Z. I mean the Carrera S is $93k at least. What's $8k for 600HP? I am just surprised that both cars equal HP and weight and he still pulled on me. Probably the transmission gearing.... I was in 4th at 70mph.

silver408z

you should have been in 3rd at 70 maybe 2nd. That would a completely different race if you were in the right gear. Being in stock trim you want to start a race around 4000 rpms.

95rtturbo

+1. 4th at 70? I'm surprised he didn't pull you harder than he did.
One simple reason why they are faster from a roll, than it would seem (if you only look at power to weight ratio), is the same reason why GTRs are faster than on paper - lightning quick shifts.

z06x60z

I agree 3rd would have pulled harder. I couldn't have been in 2nd because 2nd tops out at 71 I believe. I think 4th at 70 is around 3000-3500 rpm. Even if I pulled from 3rd I still think he would have taken me check out the info below.

Here is the info on the Porsche. Its about 50lbs lighter than the Z. The transmission ratio is lower in 4th (1.0) and 5th (.84) in the M12 in the Z. Technically the Porsche should be better at highway rolls than the Z from what I am seeing here what do you think?

Curb weight, mfr. claim (lbs.) 3,075
Horsepower (hp @ rpm) 394 @ 7,400
Torque (lb-ft @ rpm) 325 @ 5,600
Fuel type Premium unleaded (required)
Transmission type Seven-speed manual
Transmission ratios (x:1) I=3.91, II=2.29, III=1.55, IV=1.30, V=1.08, VI=0.88, VII=0.71
Final-drive ratio (x:1) 3.44

z06x60z

A C5 Z06 should be able to beat a 485HP GTR from a roll correct? The GTR has AWD and is heavier.

LightFighter_GXP

all M6 needs 3:90 -4:10 gear swap.... will make a hell of a difference My vette would not even get into 4 gear in the quarter on stock 3:42 ratio was very disappointing trapping 111-112 in in 3rd gear

z06x60z

That will lower the top speed by a lot. The motor needs to be supercharged to keep up with other 400 HP European motors that easily top 187 with already aggressive gearing.

360 Modena at 400 HP kills the LS6 top end. Pulls harder at highway rolls with more aggressive gearing in the tranny.
F430 Scuderia at 500 HP kills the LS7 top end. Pulls harder at highway rolls with more aggressive gearing in the tranny.

Again GM designed the motors for good MPG and it made it affordable while Ferrari is not affordable.

95rtturbo

No.

dagon138

Someday 991 you will be mine.

540i 6spd

All in the gearing.

Trash

3rd gear would have been a whole different animal. I've had traction control kick in at speeds above 70 mph when transiting expansion joints in 3rd with the throttle buried. 4th gear not so much.

bikeriderga

Was full Traction Control engaged when you had the run? If you were not in Comp Mode at least, that would make a big difference.

Like others have said, think you need to learn the limits and how to shift as well. 4th at 70 is way too tall for racing.