Noob Question on W-Style Engines

Having trouble finding a diagram online anywhere…

I understand for a W16 there’s 4 banks of 4 cylinders each, or a W12 is 4 banks of 3 each…but how is the block set up? I mean…when thinking of such an engine, a W12 for example…i picture 2 V6’s side by side…but if that were the case, there would have to be 2 cranks…

Just something i’d like to be educated in if somebody has anything useful to say or a good link to a writeup or two, maybe with pics and cross section graphs/diagrams/animations and what not…

I am wondering the same things…this thread shows a W9
http://www.nyspeed.com/forums/showthread.php?t=24365

that looks like a W shape…but it’s not the same as the more “typical” W engine i think…which consists of 4 cylinder banks…

some pics, there used to be a good cutaway pic but i can’t find it.

http://www2.uol.com.br/bestcars/carros/vw/w12-pistoes.jpg

Don’t get hung up on the shape of the letter.

Just for fun, here’s a radial engine:
http://www.ultralightflyer.com/images/radcam03.jpg

oh so it’s just two huge heads…i for some reason thought there’d be 4…

and in i think last month’s or a couple month’s ago American Iron Magazine…my dad subscribes…on the cover was a bike with an old airplane radial engine…was pretty cool

it’s kind of like 2 vr6s

Instead of 2 banks of cylinders like a typical “V” engine, there could be 3 or 4 banks all connected to the same crank. (The VW “W” motors have 4 banks, basically 2 VR’s. The Bugatti W18 is 3 banks of 6.)

W3:

[quote=“90NA300ZX,post:6,topic:24596"”]

oh so it’s just two huge heads…i for some reason thought there’d be 4…

[/quote]

It’s only two heads because it is similar to vw’s vr6 in that although it is a v its only by 15 degrees or so

[quote=“fiend540,post:9,topic:24596"”]

It’s only two heads because it is similar to vw’s vr6 in that although it is a v its only by 15 degrees or so

[/quote]

yes VR series engines have banks offset 15 degrees of each other.

Found these two:

[quote=“9c1,post:11,topic:24596"”]

Found these two:

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:tup: Great find. The first is the “study” engine, the second is the production motor. That is an engineering masterpiece.