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Re: Multiple valve engines

>OK, there is the I5 engine at 2.3 liters that came with
>a 10 or 20 valve head.


>And, there is the V6 engine at 2.8 liters with either
>12 or 30 valve heads.


>So, Audi is pretty good at making 2, 4, and 5 valve per
>cylinder heads.


>At present there is a 1.8 liter 4 cylinder turbo in the A4.
>(2 valves per cylinder?)

Wrong. The 1.8 has got 5 valves per cylinder. A least in Europe (don't
know what crap the US might get :-))

>So if you divide 2.3 by 5, you get approximately 0.46
>liters per cylinder. Multiply 0.46 by 4 and you get 1.84
>liters. So the 1.8L 4 cyl is somewhat like the I5 with one
>cylinder chopped off.

At least in numbers.

>Here's my thought. I wonder if they could produce a
>4 or 5 valve per cylinder head for the 1.8L I4 currently
>available in the A4. Personally I think the 5 valve per
>cylinder setup would be pretty cool, especially with the
>turbo and an aftermarket chip.

Well, it has got 5 valves per clinder..