Bhp figure's Flywheeor crank?

[merc85]

I'm trying to make a educated guess at what bhp my Volvo is at.

It's very very close to my friends Seat Leon Cupra 240bhp. 0-60 he is quicker, but 60+ the Volvo starts to pull it back.

His Cupra is 240bhp, But i dont know wether its at the wheels or crank?

My 855 t5 manual is runing a hlm304 ecu, mbc set to 16 psi. with a 15g turbo.

So is my 850 runing around 240 bhp at the wheels or crank? the Volvo is 100 kgs heavier.

[The Flying Moose]

At the HLM Dyno day last year there were around three 850's with HLM304's dyno'd.

If I remember correctly the average wheel horsepower was 235 and crank 252.

You have to remember with these T5's they are very torquey cars too.

[p fandango]

the Cupra bhp (as with all manufactures) will be @crank as its the higher figure, they would of used an engine dyno tho to get that figures & not just worked out the transmission losses. As we have to with a rolling road so best to use wheel bhp if you intend to use a rolling road for comparison between mods

[T5frankie]

i'd say around 250bhp

[t5_monkey]

cupra has a narrower box so will be pretty quick to about 70ish when that starts to matter less.

it's very hard to tell on the open road - unless someone has more than 50bhp more or less than you, you won't see a vast difference at sane speeds.

Torque does make a difference too ... our cars tend to be torquier than most other petrols.