How the hell did they do this?

[SXS]

Audi R8...
610bhp out of a V8 3.5 32valve dry sump engine????
With 516lbs/ft of torque????

Amazing!

and I thought the AJP engines were amazing....

[mjc]

Supercharged...?

[tuscan_thunder]

erm...are there not a couple of turbos attached to that engine?

edited: it's the same as the engine in the Bentley speed 8.

>> Edited by tuscan_thunder on Thursday 3rd June 10:11

[SXS]

Ooops yup, twin garret set at max boost of 1.67, still, thats feckin amazing!

>> Edited by SXS  on Thursday 3rd June 10:12

[tuscan_thunder]

i still think it's turbo'd but will research further!

the cosworth HB engine (McLaren/Benetton 1993) had about 650-680 brake and was 3.5 V8.

F1 technology from 10 years ago only just filtering down to top-level sportscars. does that mean in 25 years time we'll have 3 litre V10s with 880bhp like Schuey's in our road cars?

[donatien]

Ah yes but what is the lifetime of those blocks?

BMW F1 engines back in the 80s used to put out 1000 BHP+++ for qualifying and they were much smaller capacities believe me.

610 BHP from 3.5 litres is not *that* outstanding

[Plotloss]

BMW had 1500bhp out of a 1.5 Turbo in the eighties.

Now thats impressive...

[SXS]

TVR Power - if you're reading this, stop the fast'n'furious NOS upgrades, get a twin-turbo package for our Cerbie V8 engines sorted!!!!

[tuscan_thunder]

any idea what size of turbos are in it?

1.67 bar is quite a lot! my mate's evo runs 1.68 and gets 474 bhp. it's bored out to 2.2litres. (he's getting a new turbo and is aiming for nearly 600bhp at that boost)

[donatien]

Plotloss said:

BMW had 1500bhp out of a 1.5 Turbo in the eighties. Now thats impressive...

Exactly my point. Assuming you could stick 2 of those together and you have (roughly) 3000BHP from a 3 litre V8. Makes the R8 output look a little low.

I think engines with those outputs were reserved for qualifying, after whch the engines were junked. The race cars had a lower figure for endurance.

Dave

[tuscan_thunder]

the BMW F1 engines of the 80s used road car blocks!! that's true. BMW's engine guy (Paul Rosche) still stands by that even today.

i think it was the block used in the 2002 but that's maybe not right.

the boost on them was colossal though.

also 610bhp from 3.5 V8 IS impressive if it was naturally aspirated.

[900T-R]

[quote=SXS ]TVR Power - if you're reading this, stop the fast'n'furious NOS upgrades, get a twin-turbo package for our Cerbie V8 engines sorted!!!![/quote]

And then bolt on the nitrous...

[SXS]

I initially thought it was NA, but its not, so I my amazing mode is now switched off, but still impressed....

Anyway, what are "Constant-velocity plunging tripod joints"?

[donatien]

tuscan_thunder said:

the BMW F1 engines of the 80s used road car blocks!! that's true. BMW's engine guy (Paul Rosche) still stands by that even today.

Weren't they actually used in road cars first to loosen the engine up then removed, tinkered and made to race spec?

[Nick P]

donatien said:

Ah yes but what is the lifetime of those blocks? BMW F1 engines back in the 80s used to put out 1000 BHP+++ for qualifying and they were much smaller capacities believe me. 610 BHP from 3.5 litres is not *that* outstanding

quite....F1 engines nowadays are 900bhp+ from a mere 3 litre NA

[SXS]

But the F1 engines these days are V10 and not V8 right?

[SXS]

Although I remember hearing that from 2006 onwards F1 will be reducing the engine size to 2.4 litre V8... to help reduce costs and speeds.

[tuscan_thunder]

Donatien- yes i think you're right. that's faintly amazing!

" i would now like to appoint myself as J-P Montoya's chief engine-runner-in! "

for naturally asp. engines, any one like to nominate an engine?

my list: minister K-series-250bhp from 1.8
138 bhp per/litre
Hayabusa 1.5- 230bhp, 153 bhp per litre
swindon vauxhall- 305bhp 2litre 152.5 bhp per litre

(i'll think on more and edit soon)
edit: 2.8, 4cyl Hart engine- 450bhp 160.7 bhp per litre

>> Edited by tuscan_thunder on Thursday 3rd June 10:35

[Bar_steward]

read this post with my jaw on the desk
the incredible technology of the F1 cars only hits you when you really think about it: 850+bhp from 3litres!

F1 drivers, even crap ones, are still amazing to be able to deal with that kind of power (and corner it for all you drag racing fans)

[donatien]

It's worth dwelling on that BMW F1 engine for a moment.

People today are impressed with 100 BHP/litre. That's the sort of figure the Speed 6 can easily achieve NA. The AJP V8 is struggling to reach that even in RR build.

If you go back to the 60s/70s and take the Ferrari 4.4 V12 (as in the Daytona), that was quoted at 352 BHP. I think they arrived at that figure by saying "It's 4.4 litres, let's say 80 BHP/litre, gives us, um 352 BHP"

The BMW lump is an order of magnitude higher at 1000 BHP/litre! (albeit with stupid boost levels).

And I don't even like bl00dy BMWs