RODOLFO04

Just want to know if someone else experience a big cut of power around 7500 rpm while accelerating in first gear? I have a manual transmission base model

is this the revlimiter?

in my opinion first is way to short

BlackBeauty

Yes - you bumped off the limiter and had your fuel cut-off.

Drifting

turbo engine so max RPM will be a lot less than NA engine.

Turbo engine makes max well before redline, so you're not missing any power. It's just different driving a turbo, you don't get that feeling of winding the engine all the way up and the power exploding at the top end, like you do with other NA 911 engines.

-Ryan-

Welcome to the world of turbo engines.

tstafford

My 2007 997TT redlined at 6600 I think!

STG

Hasn't this helped??

Sorry, couldn't help myself

RODOLFO04

stg, it is a 4S Sticker, not a GT3 sticker, that would raise my redline to 9000 rpm

thought you knew better

STG

I do

991.1 7,800 RPM?

I'll spring for a GT3 sticker for you

Busting your chops buddy

STG

But hey, torque torque torque. Thazzz where izz at!

randr

The 991.1 and 991.2 don't have particularly high redlines relative to the GT3 (9000rpm) and RS (8700rpm).

The difference between the .1 and .2 non GT cars redline is 300rpm e.g. base, S and GTS (7800 and 7500).

If you want a high revving Porsche it has to be a GT3 or GT3 RS

worf928

April Fools?

sticky

Huh? You can have turbo engines with higher or lower redlines.

It completely depends on the design of the motor and not just if it is turbocharged. You can't make some false equivocation like that.

McLaren's turbo V8 revs to 8500 rpm. Why? That sure tops every other naturally aspirated V8 on the market...

Drifting

Yes, there are certain random turbo motors that have higher redlines than certain random NA motors, however......

Fact- on average turbo motors have a lower redline than NA motors from the same company for the same car, when that car goes from NA to turbo, and lots of car companies are making that switch lately.

On average the turbo variants have lower redlines. It's a known and common scenario, try to prove that wrong.

sticky

Random turbo motors? So everything that factually exists and contradicts you is random?

Diesels are turbocharged. They have low redlines. So if you want to average them in pointlessly by all means.

On average it completely depends on the application and design of the motor. With a naturally aspirated engine you do not have the luxury of boost so to get more power you need to rev while keeping the torque curve relatively flat. How else will you do it other than increasing displacement or compression?

The fact is you made a blanket statement that turbo engines do not rev as high which is completely false. They can rev just as high or higher than naturally aspirated motors. There is nothing about a turbocharger that artificially limits the redline.

Once again, McLaren is revving to 8500 rpm. You can turbo a Honda S2000 and it will still rev to 9k rpm. It won't suddenly be limited as you implied.

You can have the best of both world's. Try to prove that wrong.

Drifting

Sorry but you're wrong, and using the random Mclaren example again still fails to disprove my main point that on average, once a car goes turbo its redline is lower. Forget Mclaren as they don't make NA cars. Consider every other turbo car in the world that was NA ten years ago.

The redline is lower for turbo cars, because on average their torque curves peak much sooner than NA engines, while NA engines redline at higher RPM to mazimize every bit of power the engine can produce, while the turbo produces its max power at lower RPM, so again the average turbo redline is lower.

Check the last 10 cars that went turbo from NA, the average redline is lower for the turbo cars.
Apparently you're someone who can't admit when he's wrong. You should really talk to someone about that.