Thread: 700Nm puma ???

Originally Posted by isuzurover

I knew a guy with a 350 chev powered statesman who had it dyno'd and the report has 150 kW and 1500 Nm

I once wrestled a giraffe to the ground with my bare hands...........

Originally Posted by uninformed

I once wrestled a giraffe to the ground with my bare hands...........

You fail to tell the whole story... this was after I had already swiftly round house kicked it to the head...

Originally Posted by isuzurover

Lots of people don't understand the diferences between metric and imperial...

In fact, I have a text book here which uses metric and imperial units in the same equation!!!

I think just as many people (if not more) don't understand how dyno's work either...
I knew a guy with a 350 chev powered statesman who had it dyno'd and the report has 150 kW and 1500 Nm

And a lot don't know the difference between metric and SI - just being my normal pedantic O.B. self.

Originally Posted by Bush65

And a lot don't know the difference between metric and SI - just being my normal pedantic O.B. self.

Indeed! Though I must admit the cgs unit system is often useful in my field.

Originally Posted by isuzurover

Lots of people don't understand the diferences between metric and imperial...

In fact, I have a text book here which uses metric and imperial units in the same equation!!!

I think just as many people (if not more) don't understand how dyno's work either...
I knew a guy with a 350 chev powered statesman who had it dyno'd and the report has 150 kW and 1500 Nm

Hahahaha did it also gain 500hp when it rained ? Yeah I don't believe the things...

700Nm? That's nuffin'

This patrol made 1309Nm before it threatened to break the dyno...
Nissan Patrol DX (4x4) (2001) Coil C/Chas 5 SP Manual 4x4 | eBay

Originally Posted by Bush65

No typo in whatever reference you took the crossing rpm from. Dougal didn't dispute that, he was making the point that where the torque and power curves cross is a consequence of the units of measure used and not to read anything else into the coincident.

I see some still think that 700Nm might be believable/achievable. My earlier post pointed out that If the power was as stated, then the torque was in error, or if torque was as stated them power was in error. Perhaps those people couldn't see that connection for some reason!

Engine dynos, measure torque over a range of rpm, then calculate power from those values. Chassis dynos do much the same, but the problem is the reduction in the gearing increases the torque (measured at the tyre tread), and there are losses between the engine and tyres. When the measured/calculated values are referred back to the engine, the results are open to error.

A diesel engine produces a torque vs rpm curve that has a shape that will somewhat follow the shape of a curve of volumetric efficiency vs rpm of the engine, i.e. the peak torque very nearly occurring where VE is greatest and falling at high rpm as VE drops. Power still increases as torque drops while rpm increases.

When performance of diesels is increased, the torque curve is similar just moved up. So if the torque was increased to 700Nm, it should still be at nearly the same rpm, and the shape should be similar. Then for 700Nm torque the power would have to be much greater than quoted, unless the torque dropped dramatically (unrealistic) from the rpm where it peaked.

Auh ok I quickly read it and thought there was a typo all good now....this is quite amusing this thread in the end it isn't true because there's no pictures/videos

Originally Posted by isuzutoo-eh

700Nm? That's nuffin'

This patrol made 1309Nm before it threatened to break the dyno...
Nissan Patrol DX (4x4) (2001) Coil C/Chas 5 SP Manual 4x4 | eBay

419rwkw and 1309Nm on 14psi boost.

I want some of what he has for breakfast.