Torque output from factory 430 BHP upgraded 993TT?
Discussion
Exceptional taste, Squire.
Does it possess a sports exhaust of some type?
(Essential for an uplifting aural differential o'er the standard beastie.)
There's
all real world difference from the standard car on the road...may I politely suggest you dispense with any notion of common sense and seek the dilithium within?
DeR.
Does it possess a sports exhaust of some type?
(Essential for an uplifting aural differential o'er the standard beastie.)
There's
all real world difference from the standard car on the road...may I politely suggest you dispense with any notion of common sense and seek the dilithium within? DeR.
dazren said:
I've only seen the Torque figs for the 430 either in Turbo S, GT2, or Turbo with upgrade given as the same as the regular turbo at 398 Lb/ft.
Putting the torque figure down the same for both the 408 and 430bhp versions must surely be down to sloppy journalism.
DAZ
Indeed you would think so, esp on a Turbo car when power increases are invloved, yet every publication ive got says the same-
408bhp@5750 vs 430bhp@5750 & both quoted by as 398Lb/ft@4500
Agree there is naff all diference on the road, throw it on a a respected rolling road to check it out.
Anyway 430bhp is such an uneven number, doesnt a nice round 500 or so modified bhp roll off the tongue so much more easily.......
Sorry don't know answer but i do know that it will not be the same as the standrd 430bhp GT2 and the Turbo S was 450bho as standard.
Probably the best way to find out would be rennlist or www.993TT.com
DM before you purchase you must do one thing a proper non optimistic rolling road test.
I know of 2 turbos in the last 6 months that have come in 100bhp under expectations, both required and received very expensive engine rebuilds. One of the cars was purchased this way.
This is definitely the first thing i would do if i was looking to buy a TT, even before i let a specialist anywhere near it.
Probably the best way to find out would be rennlist or www.993TT.com
DM before you purchase you must do one thing a proper non optimistic rolling road test.
I know of 2 turbos in the last 6 months that have come in 100bhp under expectations, both required and received very expensive engine rebuilds. One of the cars was purchased this way.
This is definitely the first thing i would do if i was looking to buy a TT, even before i let a specialist anywhere near it.
Just to confirm Iguana's assertion, and 'cos I've got Mr Frere's definitive tome to hand, I quote from his section on the 993TT motor ...
"For those who want even more power and performance, Porsche's Exclusiv division has come up with an even more powerful and faster version having recourse to most of the modifications incorporated in the street version of the 911 GT2 racing model to achieve the same power output of 430 PS at 5,750 rpm, while retaining the same 540 Nm torque (= 398 lbft) at 4500rpm. The modifications include a modified exhaust system, a remapped engine management unit providing, among others, a higher boost around top revolutions (1.9 instead of 1.75 bar abs) and fitting an additional oil cooler"
He goes on to say it increases top speed to 300 kph (186.5 mph) and gives a 0-100kph time of 3.8s.
Yum!
"For those who want even more power and performance, Porsche's Exclusiv division has come up with an even more powerful and faster version having recourse to most of the modifications incorporated in the street version of the 911 GT2 racing model to achieve the same power output of 430 PS at 5,750 rpm, while retaining the same 540 Nm torque (= 398 lbft) at 4500rpm. The modifications include a modified exhaust system, a remapped engine management unit providing, among others, a higher boost around top revolutions (1.9 instead of 1.75 bar abs) and fitting an additional oil cooler"
He goes on to say it increases top speed to 300 kph (186.5 mph) and gives a 0-100kph time of 3.8s.
Yum!
Doh yes Turbo S 450bhp not 430, (in my hazy memory I thought there were 430 & 450 versions) anyway found figs for the Turbo S at 450bhp@6000 & 430Lb/ft @ 4500.
Still as Clubsport says you would be suprised at the actual power seen when a car is put in the rolling road yet often the owner has no idea its way way down on power.
Still as Clubsport says you would be suprised at the actual power seen when a car is put in the rolling road yet often the owner has no idea its way way down on power.
Clubsport and Iguana,
Why do you think used Twin Turbos are prone to loss of power/ potential rebuild issues. This is quite concering. Before I eventually sold my E36 M3 I had it dynoed and it was 320.5 BHP (almost spot on) and my R34 Vspec was just over 400BHP (which is about what it should be after the specific mods it had).
With a full service history, I would have thought that these 911 engines were pretty much bulletproof (or as much as any high performance car can be). So what is the main issue. Is it normally turbos wearing out or obviously worse, top and bottom end problems.
I have a guarantee with my car but will get it independently checked over. Any thoughts?
Why do you think used Twin Turbos are prone to loss of power/ potential rebuild issues. This is quite concering. Before I eventually sold my E36 M3 I had it dynoed and it was 320.5 BHP (almost spot on) and my R34 Vspec was just over 400BHP (which is about what it should be after the specific mods it had).
With a full service history, I would have thought that these 911 engines were pretty much bulletproof (or as much as any high performance car can be). So what is the main issue. Is it normally turbos wearing out or obviously worse, top and bottom end problems.
I have a guarantee with my car but will get it independently checked over. Any thoughts?
Hi Dave,
from my understanding brought about because of an S ecu that was available on Ebay recently (sold for £250 in case you were wondering). The only significant difference is that the S ecu holds 0.8 BAR to the redline where as it usually drops back to 0.6 bar. I guess it does about the same as a sports exhaust.
Does it have the S additional oil cooler too?
Good luck
Alan
from my understanding brought about because of an S ecu that was available on Ebay recently (sold for £250 in case you were wondering). The only significant difference is that the S ecu holds 0.8 BAR to the redline where as it usually drops back to 0.6 bar. I guess it does about the same as a sports exhaust.
Does it have the S additional oil cooler too?
Good luck
Alan
DaveMiddleton said:
Clubsport and Iguana,
Why do you think used Twin Turbos are prone to loss of power/ potential rebuild issues. This is quite concering. Before I eventually sold my E36 M3 I had it dynoed and it was 320.5 BHP (almost spot on) and my R34 Vspec was just over 400BHP (which is about what it should be after the specific mods it had).
With a full service history, I would have thought that these 911 engines were pretty much bulletproof (or as much as any high performance car can be). So what is the main issue. Is it normally turbos wearing out or obviously worse, top and bottom end problems.
I have a guarantee with my car but will get it independently checked over. Any thoughts?
the 2 examples i mentioned both had problems with leaks from a couple of cylinders, this would have shown up on a compression test...things only get worse once these problems begin.
the bottom end on 993 & TT is very strong and should not cause problems...Guarantees are a piece of paper,, if you find the engine is down on power by 50-100bhp..what can you do,,it starts runs and is wear and tear expected on an 8 year old car?
A decent rebuild on a TT will cost £10k.....your choice, but the £50-75 on a true rolling road is absolute peanuts in comparison to the hassle that could unfold...
Sorry to sound so glum,,,hopefully you have found a great car that will give you thousands of miles of trouble free and fun motoring.
Plotloss said:
Is that £10K figure typical accross all the Turbos Paul or is the 993 peculiar in some way?
Matt to be honest both examples i know of cost between £10-13k to sort,,this can depend on extent of damage, i.e do the heads get slightly warped or lift a little.
I don't think you can get away with a top end rebuild on any turbo for less than £5-6k....remeber these cars are getting on, you make good and find other parts that are on their way out.
I have heard of 993 TT having problems with the boost balance valves which causes inbalance in boost to the 2 turbos this can lead to problems with engine wear and power.
Having considered a turbo a couple of times myself and you really have to spend small money now to find out if you need to spend bigger money a few months down the road.
clubsport said:
...you must do one thing a proper non optimistic rolling road test.
...This is definitely the first thing i would do if i was looking to buy a TT, even before i let a specialist anywhere near it.
996 turbo is trying to arrange a rolling road day at G-Force in Aylesbury. It will be £50 per car for 12-20 cars or £40 for 21-24 cars. At the moment we only have 4 cars so let 996 turbo know if you can make it:
www.pistonheads.com/gassing/topic.asp?p=1&f=48&t=92845&h=0
I've just had my 944 Turbo on the rollers this week. After some fettling of the wastegate spring I am now at a healthy 300bhp and 330 lbft torqueThis was at a small place local to me in Northants called Jamsport. It's a 2WD road and rated to 400bhp so not really that useful for some of the monsters on this thread 
Yes, these 4 pot Turbo cars really do stick out a lot of torque for a 2.5 and the 330 figure was made quite low down at 4370 rpm. There is a little more to come as I am not happy with the existing wastegate setup. It still opens too early and there are some pretty good deals in the US at the moment on stronger adjustable gates.
Yes, these 4 pot Turbo cars really do stick out a lot of torque for a 2.5 and the 330 figure was made quite low down at 4370 rpm. There is a little more to come as I am not happy with the existing wastegate setup. It still opens too early and there are some pretty good deals in the US at the moment on stronger adjustable gates.
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