justa question

[holland_ford]

when ford say a new xr6 turbo has 270kw is that 270 at the flywheel or 270 at the wheels im realy confused can someone point in the right direction thanks

[Revolver]

AFAIK, its flywheel unfortunately....

[pauljh74]

Originally Posted by holland_ford

when ford say a new xr6 turbo has 270kw is that 270 at the flywheel or 270 at the wheels im realy confused can someone point in the right direction thanks

Manufacturers pretty much always use flywheel kW, tuners/aftermarket engine shops usually measure output via a wheel driven dyno - saves pulling the engine out.

[sneaky]

just saw a video (there's a link in the xr6t section) of a new FG xr6t going on the dyno at HPF. it punched out 236kw at the wheels from the factory

[Ohio XB]

Here in the US the standard became measured at the output shaft of the transmission with all the accessories (AC, power steering, electrical demand) on, in the 1970's. This is called SAE (Society of Automotive Engineers) net.



Steve

[Iggypoppin']

You can put money on the fact that the flywheel ratings on ford turbos is very conservative. F6's are probably closer to 330fwkw but the company under rates it.

[GS608]

I'd put money on it being more than 330fwkw, some have been going 280-300rwkw from factory on the dyno, using rwhp=fwkw thats 375-400fwkw

just seen this thread and this quote

Ford operate on 17% losses through the drive train of the ZF trans and factory LSD ( I asked a guy at FPV and he told me this) - which would make 300 RWKW = 370 RWKW close enough.

[Revolver]

Originally Posted by Iggypoppin'

You can put money on the fact that the flywheel ratings on ford turbos is very conservative. F6's are probably closer to 330fwkw but the company under rates it.

I thought that may be the case. I've heard varying rumours that they are far higher than what they are in fords power world.

The question is..... Why do they underate it? Because they would barely sell a GT? I mean that upped power rating would add to the F6's cult following because, (as if it doesnt already) it would certainly steer people clear of that chunky clubsport (chuncky by weight, & chunky by styling). The answer to the "we'll loose more GT sales than we already do, ( : )if we show the real power figures for the F6" statement, is simple, just up the power from 315 on a GT to 340kw. thats only 25 more, which is the same margin they already made over the previous GT.

But I suppose thats all a bit superfolous with the Cyote comming out soon..... Lets hope THAT has 340 straight off the floor.

[ZA-289]

They underquote to so the V8 is "more powerful" and to keep the pollies off our back.

[escort1976]

hopefully less people buy gts, so they are rarer later...

[XR Martin]

Originally Posted by pauljh74

Manufacturers pretty much always use flywheel kW, tuners/aftermarket engine shops usually measure output via a wheel driven dyno - saves pulling the engine out.

ALot easier to fudge the numbers too.

[holland_ford]

thanks for that guys i am now ****ed off so my na ba falcon that has 195 at the flrwheel now actually has less at the wheels

[Falcon Coupe]

Why, is it slower now that you know.

[divine_afg]

Originally Posted by holland_ford

thanks for that guys i am now ****ed off so my na ba falcon that has 195 at the flrwheel now actually has less at the wheels

195kw used to be power level seen on factory v8s.
if not happy upgrade.

[JINSAY]

unhappily flywheel :(

[Matt47569]

get a full exhaust, air intake, good custom tune and that will be close 195kw at the wheels then

[Gobes32]

A few magazines have suggested constant under-quoting of HP figures from Ford. That is why the 310kw F6 is constantly faster than the 317kw GTS.

[bernadette86]

I really wouldn't want to see power figure for my fairlane. That'd be heart breaking