Compound charging? Interesting.

[Widge]

Thought some of you gys might find this interesting, it's the inlet layout from the Lancia Delta S4 circa 1988, 1795cc and 480bhp @ 8400rpm - with 30% front and 70% rear bias to the 4WD.

[Turbo-Brown]

Ooooh so that's how it works!

That's actually pretty simple (in principal).

Good find

[Simon]

Awesome cars the S4, supercharger for the low range, then the turbo takes over.

They were actually about in 1984 to replace the 037 to compete with the T16 and quattro, they were banned by the end of 1986.

Henri Toivonen and Sergio Cresto were killed in on of these, was a damn fine driver too.

[jmc330i]

Ooooh so that's how it works!

That's actually pretty simple (in principal).

Not getting ideas are you??

Compound charged S50 anyone??
600bhp at 1.5bar apparently

[Turbo-Brown]

Not getting ideas are you??

Arf arf!

Nope, I've moved onto a much more mundane project: Saving for a house deposit

Two turbos was enough effort anyway!

[glenn]

lots of trucks use compound charging nowadays.
but its slightly diferent to turbo/supercharger,
scania's are a turbo on the exhaust manifold then another 'turbo' further down the exhaust thats connected to the flywheel via a toothed wheel,
effectivly(sp?) using the exhaust gases twice.

[agent006]

Delta S4 allegedly had nitrous too. Stored in the fire extingusher tanks and fed through the rollcage. Hence why the fire was so fierce in Henri's crash.

[jmc330i]

Not getting ideas are you??

Arf arf!

Nope, I've moved onto a much more mundane project: Saving for a house deposit

I know what you mean - but thats one project Im trying to put off for a while.

[chip-3door]

Delta S4 allegedly had nitrous too. Stored in the fire extingusher tanks and fed through the rollcage. Hence why the fire was so fierce in Henri's crash.

Nitrous puts fires out.

I believe it was fuel they had in the cage, not nitrous

[Widge]

I don't think they had anything in the rollcage - fuel would add considerable weight, and according to Toivonen the S4 was enough of a hand full without nitrous.



"The Tour de Corse began on the 1st of May. Henri was suffering from flu, but insisted on driving regardless. Even though he was walking around semi-comatose in comparison to his usual jumpy and nervous self, he was constantly putting up the fastest times for each stage. Competitors and spectators alike could not grasp how someone so far from fitness, could pull out a performance like that.

The wisdom of that was debatable though, as it was not to last. On the 7th kilometer of the eighteenth stage, the Lancia inexplicably left the road and plunged down a ravine, landing on its roof. The aluminium fuel tank, ruptured by the trees as the car rolled down the cliff-face, exploded. Clouds of thick black smoke pinpointed the accident, but there were no marshalls or spectators nearby to lend assistance. Still strapped in their seats and with no means of escape, Henri Toivonen and Sergio Cresto burned to death.

No one knew of the accident at the stage finish, and it was only when the Lancia hadn't emerged from the competitive section on schedule, did the team realise that something was amiss. It wasn't until the next crew through explained about the black smoke and fire seven kilometers into the stage, did everyone understand that there had been an accident involving Henri's Lancia.

But it was too late. By the time the emergency services reached the scene, they were faced by an inferno. The trees in which the car had come to rest were so dry, that they added to the flames, fanned by the breeze. The remains of the car was so charred, that the Lancia engineers and technicians couldn't physically determine the cause of the crash.

So, exactly how Henri Toivonen and his co-driver, Sergio Cresto died, is still a mystery to this day. Was there a problem with the car, or was it that Henri's ill health* caused him to lose control of an extremely powerful and car on some of the most treacherous roads in Europe? We will never know, though Henri himself admitted that even he didn't really know how to drive the S4 Maybe we wouldn't want to know... It would only increase the pain caused by such a tragic loss to the sport of rallying.

* Walter Rohrl later confirmed that Henri was indeed taking some form of medicine at the time to alleviate his flu symptoms. Whether this may have been a potential cause of the crash remains unknown.

Henri left behind a wife, Erja, and two young children, Arla and Markus. Sergio "

http://www.thruxton.f9.co.uk/henri/henri_career.htm