Next black??? What do ya all think....

That's cool, although didn't Nissan get there first with the march super-turbo?

Delete options are the way forward

Come on blownimp, just do a triplecharged one then! Supercharger, turbo and turbocompounding! No probs!

There was a single turbo 3.9 EFI Rover up for grabs near me, didn't go for much money. That'd make a nice twincharged lump, probably. It was a very low CR, at least. My urge to build an Over lump is growing

Blownimp, even if you weren't the first (which I doubt, your excellent piece of engineering will be finished soon by the looks of things at the rate your going!) it'd still be the best and that's all that counts ;D

I think the VW engine is a real sweet bit of kit and it's nice to see manufacturers working on high performance small engines for a change - I know there's lots of sporty small twin cams and so on out there but getting real muscle from such small capacity, that's a new-un and good to see (barring of course the Miras and various other bonkers Daihatsu efforts!)

I intend to draw up plans for a high revving, extremely small V8 that'll make the right noise yet be nicely packaged, reliable and economical! I'd love something like that so it looks like I'll have to make it!

very cool, but seems rather complex to me. I can think of easier ways of getting 170 BHP. How does the MPG work out compared to a decent 2.0 2.2 NA?

in what vehicle?

Thats good going in a 170 BHP golf then.

When I first ran the 2.4l DOHC in my Datsun 510, with the engine wired as it should be from the factory (with lambda and closed loop) it'd happily do 43mpg on a run cruising at 70-80mph. Sometimes, I think a large capcity, torquey engine in a small, light car can work well as it has little work to do.

Boosted small capacity engines are more of a sales gimick than a truly useful tool. The ability to say "hey looks, it's on a one litre" makes the manufacturer seem more environmentally friendly than they would if they were sticking 2.4l engines in small cars.
That fact is, if you boost an engine and shove in twice as much air as it would consume n/a, then you need twice as much fuel to go with it.

That engine

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Lupo

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All trim

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Win.

*n

Theoretically a boosted smaller engine is more efficient than a bigger unboosted one though – both thermally due to less heat loss into the cylinder walls etc, and mechanically - less friction and so on.

However it will no doubt wear out faster and then require a new load of iron and aluminium ore to be dug out the ground to make its replacement, sooner.