Recently i was talking to mates and the topic got onto power output of various commodores/falcons. Most of them are holden fans, and seemed to think that ford measured power in a different way to holden. Is this true, and if so, how does it differ?
naa they are just fags
it all depends on where you get the power reading from, either the flywheel, or the wheels. the source where you get your power reading from, should be either fwkw (flywheel) or rwkw(rear wheels) or just say kw, where it can be unsure. bhp to is also at the flywheel
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This area was brought up by holden when the barra's first came out, apparently there a two different setups to read power at the wheels on the dyno, ford uses a different setup to holdens which read a higher figure than what it should be, the difference is very minimal e.g 10kw at the engine. If it was true then it means that say the current SS would read 255kw instead of 245kw if measured on Fords setup. But then just about every dyno is different to everyone elses. My EB read 120rwkw at one place and 130rwkw at another, either way it still performs the same.
Recently i was talking to mates and the topic got onto power output of various commodores/falcons. Most of them are holden fans, and seemed to think that ford measured power in a different way to holden. Is this true, and if so, how does it differ?
They are actually correct, well until recently I believe. Ford measure their einge power in DIN rating which as far as I understand is without accessories such as power steering, A/C etc. Holden on the other hand has measured their engines in SAE rating (I think) which does have accessories. So if a ford and holden are both rated at 200kw, the holden actually has more power. But as far as I understand, this has changed recently to allow the HSV range to be marketed up against the 290kw GT.
Okay HSV still use SAE standard power rating although their website lists both SAE and DIN figures now, so the HSV 285kw engines are actually 292kw DIN, which means 7kw for accessories.
The Barra's are all measured WITH accessories, the EB-AU were measured without! (Strangely, the EA was measuered like the BA) This also accounts for why the BA I6 runs significantly higher dyno rwkw's than the EB-AU's even though advertised fwkw is not that much more. If it were measured like the EB-AU I think you would see the BA I6 pumping out close to 200fwkw's.
The Barra's are all measured WITH accessories, the EB-AU were measured without! (Strangely, the EA was measuered like the BA) This also accounts for why the BA I6 runs significantly higher dyno rwkw's than the EB-AU's even though advertised fwkw is not that much more. If it were measured like the EB-AU I think you would see the BA I6 pumping out close to 200fwkw's.
THe EB-AU has always been measured in DIN which is with accessories, alternator, a/c etc. Infact SAE days is long gone disappeared in the late 1970's i think.
The BA is right on the money at 182kw at the fly. If you look mechancially you can see where the power has been made with better stock exhaust, filter and DOHC as well as crank revisions.
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Difference in kW measurement
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