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No turbo'd sixes?


MattR32
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Saab 9-5 3.0 V6 (assuming you mean the new 9-3 Aero Sportback thingy).

Nissan Skylines (no longer available though?)

Plenty of BMW/Audi/Merc/Jag six cylinder turbo diesels.

Does the Volvo S80 2.9/T6 have a lpt?

You're right, very few out there apart from the diesels.

Here's a lightly different question on sixes - how many cars have a flat (boxer) six cylinder engine? I can only think of three, and two of them are Porsches.

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E46 M3 - Straight 6.

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That's not a boxer though. Or a turbo. crazy.gif

I suppose it is 'flat' in a sense...

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It's straight, rather than flat. Flat (or Boxer) usually refers to horizontally opposed cylinders like a Suburu or Porsche.

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Plenty of turbo'd four, fives and eight (even 12) cyclinder engines around but a seeeerious lack of new turbo'd 6s.

I can think of the 911 turbo (which is out of production I think) and the new Saab and possibly the 2.7T Audi but that's it.

Any reason any of you know of?

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Wait for the new blown BMW 3.0. Going to be fitted to the 3 and 1 series. It will have almost M3 performance from what I have read.

As for why there aren't more about, there isn't a huge market for big blown sixs and they aren't cheap to make small ones and get the power / economy thats required. Lexus have an AWD IS350 for the US but they are struggling to find a market for it in the UK as there are actually very few cars sold at that level in the UK to make it comercially viable. crazy.gif

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Straight 6? hard one. Mercs have just changed to V6 diesels. And have dropped the Straight 6 petrols too.

Vx have dropped their Straight 6 years back to allow FWD for the Vectra,

Volvo's S80 2.9 is a Straight 6 (across the engine bay!!!)

Nissan (Skyline engine) with turbos!

Flat engines: - Porsche, Alfa (of old), Beetle (of old) and Subaru's

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There are 2 main reasons why straight six engines are becoming rarer.

First it is very difficult to comply with current crash legislation with a long engine such as a straight six. BMW are the only mass manufacturer to stick with this configuration, and partly get round it by mounting the engine a long way back in the chassis. This has a knock on effect when it comes to packaging and space.

Secondly, by swapping to a V configuration, you can save alot of money on tooling / R&D etc by sharing engine configuration between your V6 and V8 units. Audi and Mercedes do this.

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