Sebastien Loeb German WRC stage 1

Sebastien on the start line of the first stage at the WRC in Germany.

Category:

Sports

Tags:

• wrc
• Sebastien
• Loeb

[trevoo6]

bloody hell that goes. wish i had that 2 go to work in wen im late haha

[dbasq1]

you can hear the turbo winding up at 0.09, anti-lag is very severe on the turbo so they only turn it on just before the start and as soon as they cross the finishing line.

Watch in car footage and as soon as they cross the finish, they knock the anti-lag off straight away. Serious pice of kit!

[TyrantRulez]

@trevoo6 and i wish, this were my job :D

[brianm00re]

@Rsspecial1 these engines are well capable of 600+bhp at the flywheel ...when they convert older wrc cars to rallycross supercars the only major thing they do is change the turbo...the 2010 spec wrc cars had to carry restrictor on the turbos

[Rsspecial1]

@slickfast

AND most people sadly know so little they dont understand the differnt between anti lag [which only works on over run] a soft cut rev limiter or what they tend to use on a start... the launch control which is just a SCRL set lower down the RPM. Honestly, most people have NO IDEA but i build them, i know them, and thats that.

[Rsspecial1]

@slickfast Back in the day they used to actually have an air and a fuel injector in the manifold, they were testing and that was the beginning of "antilag"

Most of the backfires you hear from rally cars while racing is just the engine sound, they're such high compression, very crackly etc. Their hardly off the throttle enough to allow it to kick in on overrun [it has to register as trailing throttle. OR most of the bangs between gear changes are from a SCRL which allows full throttle geachage

[Rsspecial1]

@slickfast

And read into ECU maps etc and how the ignition retard comes into effect once the ISCV is opened acting as an air bypass. also read into revertion times between open throttle and trailing throttle ETC. With compression ratios this high, and the right exhaust housing, spool up time is so quick that antilag is only EVER used [with worthwhile results] in forest stages were its full of constant bends and even then time attack wise it aint worth it!

[Rsspecial1]

@slickfast

Well, it doesnt matter if you beleive it or doubt it. Do you build these engines? Have you even built an engine EVER? I already know you HAVNT built a competition engine, we're talking 13:1 compression ratio, wire ringed blocks, oldskool cooper rings etc, cosworth forged pistons and rods etc, i do this engine building for a living! i think i'd know weather it slows you down or not, and it does. BUT dont take my word for it, just ring around competition engine builders....

[slickfast]

@Rsspecial1 I highly doubt that with teams competing against each other so tightly that they would install a kit just for sound. The whole point of an ALS is to make power (and therefore boost) available at low RPMs. Anti-lag achieves this by keeping the turbo spooled up at all times. However it gets VERY hot especially at low speeds with low air circulation, so it is kept on as little as possible.

[Trondheim18]

Does the engine make that car that loud?

[Rsspecial1]

@dbasq1

certainly not as though its the first thing they switch off to save its life. - these engines run 13:1 compression ratio WITH a turbo, the con rods on these cars cost about £1200 EACH. These engines are capable of the power they make, their tolerances are bang on, and to top it off they're rebuilt every 15 -20 hours or so, and thats not including inbetween rebuilds, all the replacements parts - they replace oil pumps etc half way through a rally.

[Rsspecial1]

@dbasq1

They dont need to worry about it that much, these WRC turbos have a shaft made of a certain type of metal [refered to as maram shafts] - they can take the heat and shock, the only part that gets destroyed is the exhaust manifold and exhaust housing of the turbo. Antilag actually makes you slower - the time it takes for the ECU to revert to the fueling map for on load and back to overrun ignition retard map, actually makes the cars SLOWER! It's only relly for the sound. But it's