Thread: switch to the dyno

I talk NM of torque so you will need to convert it i guess...

factory figures are 360nm (which i have never seen, guessing thats at the flywheel?)
All my figures are at the wheels on a 4 wheel dyno.
*Stock when i dyno they consistently come up round 330nm
*Once tuned in general I get 430nm (typically 100 extra nm at the same rpm).
*The best if a customer pushes me to do it I have got 470nm

Results will differ due to:
*the dyno machine used (2 wheel, 4 wheel, brand etc)
*temp of the day.
*every engine is different.
*accessories & engine mods.
*km's of engine.

intercoolers, snorkels, turbos, cats, exhausts all have small effects on results.
2.4 and 2.2 figures are the same with the same results.
the end of the day we are still talking about a fairly low tech tractor.

[QUOTE=nicolas0505;3184690]hello

I put my defender puma 2.4 on the power bench and I would like to know if it is the power at the wheel or at the engine, because if it is at the engine it would cause me a loss of 40 hp. I have a 150hp remapping /QUOTE]

you need to ask the dyno operator if the figures are corrected. the machine reads wheel NM and the software, if corrected, applies a driveline loss calculation. the % of driveline loss is a variable the operator can change. different dynos brands give large variances. long and short, only a before and after reading on the same engine, on the same dyno, with same parameters is directly comparable.

Originally Posted by nicolas0505

hello

I put my defender puma 2.4 on the power bench and I would like to know if it is the power at the wheel or at the engine, because if it is at the engine it would cause me a loss of 40 hp. I have a 150hp remapping
20230226_160135.jpg

my guess is that is at the wheels, my guess is if you have a 150hp (power) tune and do the math at 2200rpm (at a guess) then that equates to round 480nm of torque which is in the range I gave to you as an example which is at the wheels.

also account for what MLD has mentioned.

(the picture you posted, i cant read the figures)