US to Aus Horse Power figures.

[HYP04]

Looking at a couple of DSM and EVO forums theres quite a bit of HP chatter and differences in readings. Is there a common difference between US and Australian HP being quoted?

 

[brisvr4]

The USA seems to always quite a higher figure than what we do.
I wouldn't pay too much attention to figures as they are really only a way to help with tuning and in the old "my dicks bigger than yours type arguments!"
The easiest way to confirm hp is 1/4 mile MPH. I can run 131 at 11 seconds and 12's with a crap start.
I've checked some of the online Mph / Hp atw's calculators to compare that figure with what ecmlink says I have and it's pretty close.

 

[BMGTZ]

think of it this way....that motor only has so much space inside. So if you shove lots of ponies in....and then try Clydesdales you wont fit as many in. Their horses could be midgets....Dynos have fudge factors

Im just a grumpy old man ...but experience has led me to believe nothing of what I hear and half of what I see

 

[robevo]

most of the hp quoted in the states is engine hp and is used as a corrected figure at the wheels.
Usually atound 15 to 20 percent higher than a dyno dynamics read out here etc

 

[EVO-00X]

True. Their hp ratings always appear inflated compared to ours. Its very difficult to get any consistency wherever you are. Maybe the US need 600 Thoroughbreads to our 400 Clydesdales Brian? lol.

 

[Vr4_evopwr]

On most cars that i follow in the states the mph backs up their quoted hp and boost that's rotarys,6cyl,10.5 cars so must just be a mitsi thing. They like to try harder where we would say yeah that's enough mate she'd be alright, they would throw another 20psi at it and see what it does.

 

[BMGTZ]

When I used to be to rebuild DCOE webers and do a "little" bit of tuning. I had a guy over here in wa telling me that the reason that cars in the states make more power than our old dungers when using holley carbies was due to the VORTEX difference. He spent a full ten minutes telling me that the direction of flow of water down a drain is similar to to how air " wants" to be spun when going into a down draft carby. He fully believed what he was telling me as he was taught this at the Holley factory in the states.

didnt say a word....just left. Suffice it to say that southside carbies never did really well

hence it seems even the yanks believe thier own bull ****

 

[HYP04]

The other thing they dont appear to show is the boost curve on their dyno sheets. The indication i like to see when looking at turbos.