my dyno run

[Warlord]

The TT made 154.7 kw ATW and 700nm of torque.

the intercooler had virtually no airflow over it, and it was a bad day for dynoing.

heres the link for others to have a looksee.

http://www.clubsub.org.nz/posts6179-30.html

[troopa]

You should let us know what mods you have...

[Warlord]

pod filter, 3 inch exhaust, and running 15psi boost on the second turbo.

but it made a good 40 kw over stock, ner to the ej20R boys, infact I beat one of them by 30 kw.

day was 20 deg, 996 mb preasure and 60% humidity.

I had hardly any airflow over my intercooler, and it was too hot to touch

[B4BOY]

Now we need a strip time

[Az]

700nm of torque.


:shock:
you dont have 700nm of torque.
sorry.
a lamborghini murcielago had 650nm torque.
a v10 8.0L rt/10 viper has 664nm torque.


you might have 7000Newtons of tractive effort at the wheels.
maybe.

if you want to brag, take the engine out and bolt it to an engine dyno.

[Warlord]

i'm just going off what the dyno sheet says,

and yes 700nm torque ATW.

and remember a dyno measures torque and uses some sort of conversion to get hp.
not that it really matters, my car is fast to me, and thats all that matters.

you guys had a look at the pics, lotsa cars representing the liberty/legacy pedigree

[Kenan]

was that from a GT or a GTB and is it auto or manual

[Warlord]

from a manual 1994 GT twin turbo, i'd say that sort of power isn't too bad out of a TT either

[B4BOY]

can we see a copy of the dyno graph?

[Brian Mau]

700nm of torque.


:shock:
you dont have 700nm of torque.
sorry.
a lamborghini murcielago had 650nm torque.
a v10 8.0L rt/10 viper has 664nm torque.


you might have 7000Newtons of tractive effort at the wheels.
maybe.

if you want to brag, take the engine out and bolt it to an engine dyno.

Torque can be multiplied by gearbox......
That's why 700Nm ATW has nothing to do with the ATF figure......

[EJ20TMAN]

That RS there is not to shoddy, 240 ATW not to far off evade!!!!!

[Al]

This post will be locked. TT's don't have power and can never have power. Thank you.


;)

[Az]

](*,) :roll:

ok, you have 700Nm torque. Ive been OWNED...

sorry,


see you on the street. :wink:

[adam|RSLC|]

Firstly good dyno number from your car but im sure deaks has a similair figure out of his TT . More important though is why do Qld'ers have picks of the pooches for their avaters .?

[SC00BS]

I was thinking the same thing Adam. I don't have my own dog but I have got a photo of 2 humping

[Az]

cause we're sensitive new age guys.. it isnt all about cars..

welcome to the RSliberty and ridgeback club.

[SC00BS]

But I've got a cat. He has no tail and I'm in NSW, is that good enough? [-o<

[GTB96]

when my car was twin......at its peak it was dynoed at 165kw atw, and the best i could run was a 14.9 :(

not trying to start any arguments.....just for the record :wink:

[Al]

Can anyone explain why the power can't be applied at the track? I believe Deaks car had a dying auto in it when he had the twin so that could explain his time a little but Dean's is manual so shouldn't have had any issues. Once the 2ndary is on board it should never drop out as you are shifting straight back into it so the car should do a time that reflects the power output. Any theories? Serious theories only please.

[Billsy]

ner to the ej20R boys, infact I beat one of them by 30 kw.

day was 20 deg, 996 mb preasure and 60% humidity.

I had hardly any airflow over my intercooler, and it was too hot to touch


WTF??? Ner Ner :hh to you :D

168.5kw atw, and in the mid to high 20's weather

and only about 460 Torque (off a previous dyno sheet)

Numero 8
http://www.rslibertyclub.org/forums/viewtopic.php?t=2100


im with you al, once the 2nd babys boostin your a movin unless you short shift into the vod

[B4BOY]

when my car was twin......at its peak it was dynoed at 165kw atw, and the best i could run was a 14.9 :(

not trying to start any arguments.....just for the record :wink:

My car hasnt been dynoed yet but im doing an easy 14.3....mind you newer car who knows

[TwinTurboSedan]

Al

My thts have always been the problem is the sequential system. Unlike an ordinary twin u get twice as much turbo lag from a standing start.

So u at the drag strip u lose time at the launch while waiting for the tt to get wound up.

Common feeling here in NZ stock vs stock. Say an WRX/RS vs TT. WRX will out launch but given a long enough straight the TT will mow it down.

I know a 97 RSB TT will do about 13.5 if launched v hard. That car was dynoed at approx 160kw ATW.

Drag car a TT ain't. But it does have a good top end so it can produce good figures on the dyno.

[DRMAT]

Al

My thts have always been the problem is the sequential system. Unlike an ordinary twin u get twice as much turbo lag from a standing start.


Ummm... i think you need to go and figure out how a sequential system works. It doesn't have twice as much lag, it has half as much, it uses smaller turbos that spin up faster and the secondary turbo doesn't even receive any gases until 3200-3500rpm. 1 bar of boost is usually available not far past 2000rpm. An 'ordinary' twin system will have more lag than a sequential any day because you are trying to spool up two turbos with the same amount of gas right from the word go.

Mat :shock:

[TwinTurboSedan]

I know how the TT system works thx ;)

It works fine in day to day stuff. Much less lag than a single or ordinary twin.

Sure they are small turbos but given the sequencing and the time it takes for a TT to get both on boost is the problem. First the primary lags then the secondary comes on line and u get another does of turbo lag.

So when u want maximum power from a standing start u get worse lag than a single turbo.

Thats my theory anyway, any others...

[B4BOY]

Well i know i dont get worse lag i get way less i get boost earlier than my Friends Stock WRX and i get it longer. Once the first on has spooled im away and because it is smaller than his Turbo it spools up quicker.

I aggree with DRMAT

[EJ20TMAN]

Also it isnt lighting on the primary, so u have to wait till around 4k b4 u can really get away. But once on boost in first and u run it out to make sure u dont drop into VOD in second ur away laughing. Lightly modded GT's and stock GTB's chop STI's once the speed rises, and once in the 5k + area of 5th (near 180k woops) STI's just dont stand a chance

[Deaks]

Al, my gearbox was fine when i ran the TT down the qtr, it was the single turbo that ripped the gearbox a new a--hole.

The reason pure and simply as to why TT's dont preform at the qtr, is its in the launch. If you fuck up your launch at the drags you might as well stop and not waste your petrol, cause unless you have massive amounts of power, you arent going to run a good time.

My TT on the road was quick to launch because i could get it on boost quick (primary) but against a rex that really launched it (5-6k launch) it never stood a chance.

.5 of a sec on launch is a second at the other end. The best 60ft my TT ever did was a 2.1sec. Thats not quick. Granted the intake temps would have been silly as i couldnt watch them then.

[Joel|RSLC|]

First the primary lags then the secondary comes on line and u get another does of turbo lag.

So when u want maximum power from a standing start u get worse lag than a single turbo.

Thats my theory anyway, any others...

sounds like you have a problem.... :roll: i have no lag on the primary and the VOD goes for about 1000rpm and its a pain when you accidentally shift into it.

[Deaks]

If you have a laggy TT, there is something seriously wrong with your car. Thats one part of the TT i cant bag, it was never laggy off the mark. ?Half way through the rev range, now thats a diff story....

[Warlord]

looking at my dyno grap, the primary power is very smoth untill the vod then the stepest part of the graph occurs between 85 to 105km/h then it starts to drop off, but if you've been in my car you know it really hauls arse on the second turbo, but a 20km/h window isn't very big.

I've put in an intercooler water spray, next is down pipes, then a SAFC.

I really like the fact that my torque curve is pretty much flat, it does peak slighly more on the second turbo.
but I like the fact that the torque is the way it is (I don't car what the numbers say, ok).

and when you just driving around in town and the like it's the torque that matters.

but yeah, I think for a 1993 TT it did quite well.

and like most ppl say, once the TT gets going, it has a good mid range, and is balistic on the second turbo

[Warlord]

and for all those trying to bag me (if thats anyone)

there was one rs-b (1997) 205kw. making 125kw ATW,

so now again, the old girl did alright eh?

[Billsy]

and for all those trying to bag me (if thats anyone)

there was one rs-b (1997) 205kw. making 125kw ATW,

so now again, the old girl did alright eh?no ones bagging you, and its a respectable output from a tt but the ner ner was abit ghey as my almost stock gtb has 168.5 with the only performance mods being a 3" rear exhaust, pod filter and a bleed valve.

that rs-b must have a problem or it aint the 206kw version, (is it auto) when i had mine on the dyno there was a stock aus spec b4 (190kw i think) that has 133kw/atw

[Deaks]

Dont forget different dynos different figures, so comparing aint worth the trouble.

[Billsy]

Dont forget different dynos different figures, so comparing aint worth the trouble.

agreed that theres differences from dyno to dyno, but how much difference can there be, i wouldnt have thaught that there would be much more than around 5kw difference.... or is there???

[EJ20TMAN]

Nah mate can be huge diffences, dont wanna even open that can of worms

[Warlord]

there is too many variables to even consider.

even the same dyno on a differest day cannot be compared, a dyno is simply a tuning tool.

[paddo]

warlord, when you gonna run it down the strip?
just so we can see how you put the power to the ground?

[Billsy]

Nah mate can be huge diffences, dont wanna even open that can of worms


ok :shock: ill leave it at that... for now :twisted:

[Warlord]

ha, when I learn to dislike the $800 clutch, did a g tech on a stuffed clutch and 4 ppl in it and ran a 15 odd, at 150km/h.

or something like that.

[BAD RS]

gota b happt wiyh that resault!

[m@w8]

700nm of torque.


:shock:
you dont have 700nm of torque.
sorry.
a lamborghini murcielago had 650nm torque.
a v10 8.0L rt/10 viper has 664nm torque.


you might have 7000Newtons of tractive effort at the wheels.
maybe.

if you want to brag, take the engine out and bolt it to an engine dyno.

Torque can be multiplied by gearbox......
That's why 700Nm ATW has nothing to do with the ATF figure......

Power = Torqe x rpm / constant

Where the constant depends on the units being used (hp or kW etc..)

So if you know the diff and gearbox ratios, the 700Nm should directly relate to the ATF figure (allowing for losses), not have nothing to do with it.

Sure it will be different though, and certainly isn't comparable to torque figures quoted in magazines, etc...

[Az]

just pointing out that the statement "i have 700Nm of torque" is a bold one.

I have (had) a 2.35L running 25+psi boost through a torque converter and auto, in 3rd gear, as far as tractive effort goes, the old girl would more than double the tractive effort of a std RS or WRX or STI or anything stock really.

I understand about torque multiplication, I have it in spades with the auto.
I could stand on the brake and stall it up, sending enough torque to a single driveshaft, it would consequently snap like a twig every time.
thats not shock loading it, thats simply winding on the torque untill a 26-28mm steel rod snaps.

people quote figures on this forum all the time, I just dont want people to believe that if the dyno says 700Nm, however it gets to that figure, that they actually produce more torque than a 8L v10 ala viper. you know what i mean?

I meant no dis-respect. O:)

[Al]

Don't chassis dyno's measure Newtons, not Newton meters?

[m@w8]

Don't chassis dyno's measure Newtons, not Newton meters?

I'd imagine that they measure both. Newtons are a measure of force. Newton Metres are a measure of twisting force (or torque).

i.e. 100 Nm is like applying a force of 100N at a distance of 1m from the shaft centre, or 1000N at a distance of 0.1m, etc...

[Al]

I meant don't they use Newtons as the measurement on the graph.

[adrianvos]

The whole torque reading on a dyno thing is a joke. Please ignore what people say about torque. I probably use a dyno more than anyone on this forum, and it can measure torque at the rollers, and it can also estimate flywheel torque, but it is estimated...... and it require that the dyno know the engine rpm, which requires you to set this up. The best comparison you can get of the performance of a car is in the kW.... and if you are interested in torque, just compare the kW at lower road speeds/rpm.

-- Adrian