correction to Truckster

Thats amazing!

The new V10 VW Touraeg the world's most powerful mass-market diesel, a V10 bi-turbo delivering a massive 750 Nm of torque and 230 kW of power, the Touareg is both luxurious and a full-blooded off-road vehicle.


and

Patrol’s stunning new 4.8 litre petrol engine with Valve Timing Control delivers an awesome 185kW of power and 420 Nm of torque.

and
http://www.marks4wd.com/misc.html
CHEVY 454SS V8
7.5ltr PETROL

190KW@4000 550nm@2400

IHD-T 6cyl
4.1ltr
DIESEL TURBO
115KW@3600
357NM@1800

I want your calculator!!!!!!!!

"Torque" is turning power ie: it's multiplied by gearing. I suspect they forgot to divide the figure by the Dif ratio... or something along those lines.
The standard nonturbo Nissan TD42 puts out 264Nm@2000rpm. -at the flywheel.
If the torque figures were real everybody would want one, including the truckies............................ and me!

Derek

From those figures you stated off the dyno something appears to be incorrect. I don't doubt that's what the print out reads but something appears to have gone a miss somewhere. That is a lot of torque for one of those engines. Ring another reputable dyno mob and query the figures with them. Like a doctor get a second opinion.

Derek, don't confuse dyno chassis readings with engine flywheel readings, that's apples compared to bananas. Also, dyno's vary in their readouts. Some are "tractive Newtons", others are Newtons and others Newton metres. Then you have to factor in comparisons of vehicles that have the chassis readings (at the wheels) not taking into account, wheel and tyre sizes and final drive ratio's. The only way to compare two vehicles is to do it on the same dyno at the same day.

Tap, tap, tap!

I will post it again...........

Engine dyno results as used by the factory are not the same as the chassis dynos used by shops. They are not comparable.

The figures you have are more than likely correct as they are measured at the back wheels, and not at the engines flywheel. If you put the VW thing on the dyno it will probably make 100kw and 6000Nm, both figures at the wheels (not the flywheel)

I'm looking right here at the dynamometer graph of power to the road for a TD5 with upgraded chip. The figures read 63kw to the road, with the preupgrade as being 44kw. Now std they produce 101kw at the flywheel, and the upgrade has been calculated at 142kw at the flywheel.

Torque for the upgrade was shown on the dynamometer as being 2500Nm at the wheels, and 1600Nm at the wheels for a non-upgrade. The standard vehicle produces 300Nm of torque at the flywheel, and the upgrade has been calculated as 469Nm.

The figures you see on the dyno at the wheels will always show less power and more torque than the manufacturers figures which are produced from the flywheel. This is due to the losses in the drive train and gearing. The chassis dyno will only give you a set of comparitive figures showing before and after results, and will not give a comparison to the factory figures at all.

With regards to comparing to your mates turbo diesel LC - you can't do it like that. Dyno results change with the weather. Your mates LC was on a different dyno, on a different day and probably in a different gear with different gearing whilst on the dyno - and so will give a set of results that bear absolutely no relevance or compatibility to yours. Don't forget also to change 172hp into Kw.

I wouldn't waste my money and have it done again, but use that as a yardstick for any other tuning or modifications you get done.

Regards
Slunnie