Kw/rwkw

[Stewart1000]

i just thought id share an interesting fact with you guys, when Holden advertise KW for their cars it is the perfect kw reading, when they do the test there is no power steering, no water pump, no alternator, they even add back into the final reading or energy lost due to heat, they add in what was lost in friction, anything that takes power from the engine is powered externally, when you buy the car and do the test the RWKW will usually be about 2 thirds of what they advertise it as. so the 297kw might only be 199rwkw but in that case probabley more like 240, im basing this on when a car is brought and had a dyno test and then compare that to say, the info on the holden site it shows a much different result, so if you or anyone you know buys a car and then gets a bit worried why its not getting what it claims it should be putting out that is probabley the reason.

[Juzza]

Yep flywheel kw and rear wheel kw, you also see this in a game called Gran Turismo

[nevrl*]

Yeh,I bought new a Vy SV8 and had it dyno tested as I originally thought it lacked power but it was still running in.It pulled 164RWKW which was pretty ordinary but to cut a long story short I put a decent exhaust,and got edit = yeh baby woo-hoo.

[Stewart1000]

Originally Posted by juzza

Yep flywheel kw and rear wheel kw, you also see this in a game called Gran Turismo

yeah its flywheel but all the other stuff taken off like heat extraction, water pump power steerign ect ect

[Rmyers]

Hmmm never knew that. Does anyone know if ford use the same testing method (ie minus p/s etc)??? I'd imagine they do....

[Juzza]

It's not the kW that's important, they're useless to me.. now I care about torque

[Bloodmoon]

power for the pub, torque on the track hehehe

[Patrio7]

*shrugs* i measure a car on how hard it can hold you in the seat without spinning the wheels. which mine [stock VS] does nicely. im not into figures.

[FPVT6]

The new BA fords have about a 50-60rwkw loss in the driveline.EXAMPLE
Most XR6t make between 185rwkw to 205rwkw to a factory output of 240 fwkw
Most XT,s make about 135rwkw to factory 182 fwkw
The F6 Typoon makes 220rwkw to factory 270 fwkw
And GT makes about 230rwkw to factory 290 fwkw

Most VZ ss make around 190rwkw to 205rwkw and ive seen a VZ clubby LS2 make 225rwkw.
The is always slight variance in readings on dynos but this is an average.If anythink Fords power ratings are higher than there ratings.Atleast with the XR6 Turbo anyway.
My 2 cents.

[Stewart1000]

good 2 cents, torque is what you really want but you need a decent amound of hp to provide the tq

[greenfoam]

I don't think that's true Stewart, I think you'll find in the OLD red motor days yes that's what Holden and everyone else did, no accessories and a big open exhaust on the back, the old 308 was rated at 240hp but it's not even comparable to the much more powerful 225hp injected 304.

I think you'll find for along time now, maybe right back to the blue motor days the engines have been tested with all accessories and the full stock exhaust installed, there are laws and standards for that kind of thing these days, the 25-30kw a VN looses on the dyno is just a driveline loss, just between you and me I think Holden actually underrates some of their engines. It's well documented that the Series 2-3 VS 304's were underated. Also the original V6 by a quite a few KW. The old engine is only 5kw down on the ecotech on a rear wheel dyno and that doesn't explain the 25kw less it's suppose to have

[Pretender]

I have heard if Ford tested the power output in the same way Holden do, the listed power would be 10KWs less. Having said that all the above posts are correct. What I would like to know, if someone can inform me, how did Holden previously measure output? Case in point : VK 308 manual - 188kw, Auto 169kw - VL 304 122kw with Holden stating it developed more power than the VK. I just cannot recall the reason given for the difference in the testing.

[OzMystic]

Originally Posted by Pretender

I have heard if Ford tested the power output in the same way Holden do, the listed power would be 10KWs less. Having said that all the above posts are correct. What I would like to know, if someone can inform me, how did Holden previously measure output? Case in point : VK 308 manual - 188kw, Auto 169kw - VL 304 122kw with Holden stating it developed more power than the VK. I just cannot recall the reason given for the difference in the testing.

There are two different standards for measuring KW
SAE: which I think is an American standard and
DIN: German/European Standard standard.
Holden and most of the German and European cars use DIN which equates to a slightly lower measure. For example a 290KW ford equates to just over 280KW.....

[minux]

Before cam edit and zorst my car dyoned at 186rwkw, factory 220fwkw, 34kw difference, i can handle that, after edit zorst cam otrcai now 270rwkw

[Stewart1000]

Originally Posted by greenfoam

I don't think that's true Stewart, I think you'll find in the OLD red motor days yes that's what Holden and everyone else did, no accessories and a big open exhaust on the back, the old 308 was rated at 240hp but it's not even comparable to the much more powerful 225hp injected 304.

I think you'll find for along time now, maybe right back to the blue motor days the engines have been tested with all accessories and the full stock exhaust installed, there are laws and standards for that kind of thing these days, the 25-30kw a VN looses on the dyno is just a driveline loss, just between you and me I think Holden actually underrates some of their engines. It's well documented that the Series 2-3 VS 304's were underated. Also the original V6 by a quite a few KW. The old engine is only 5kw down on the ecotech on a rear wheel dyno and that doesn't explain the 25kw less it's suppose to have

thats right but you dont want 400nm with 180kw, that might be a bit of a dog compared to a 350nm with 220kw.