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Eric Hsu posted on December 09, 2009 11:40
Looking around on the web, you can find images of the complete Bugatti W-16 engine. This behemoth is 8.0L of fury with 64 valves and 4 turbos makes 987bhp, 1001ps, or 736kW. I should note that these power figures are actually on 100 octane ((R+M)/2) unleaded fuel. My buddy's boss actually has one who lives in Palos Verdes and the owner's manual says that if you want full power then you need to be on 100 octane. What a gyp, right? If I'm going to pay bank like that, it should be making the quoted horsepower figures on 91 ((R+M/2)!
Anyhow so Ken sent me a picture of this engine from PRI. There is a foundry that casts the block and heads for Bugatti (or VW or whoever) attending the show. This thing looks like a monster:
The picture is courtesy of Ken's iPhone. Imagine the mechanical clusterfuck this engine is if you had to work on one. I think it would be pretty damn fun to build one though if time and money were no object. With all of those oil and water passages, threaded bosses, machined surfaces, imagine the casting pattern and machine tooling for this block. No wonder why the damn car costs big $$$.
Friday, December 11, 2009 1:14 PM
what you plan on doing with this engine
Friday, December 11, 2009 2:22 PM
What in the overly complicated rotating assembly is that! When I had heard of the W16, I, for some reason, thought it was more like 2 V8s side by side (hence the W) with 2 driveshafts, but this is just ungodly complicated. I would never, ever, want to touch that motor. No way that is fun.
Friday, December 11, 2009 2:42 PM
I am not doing anything with this motor. It was at the PRI show. I would want to build one if somebody coughed up the cash just for the challenge.
Friday, December 11, 2009 3:16 PM
Essentially two Phantom V8 combined. Overly-engineered for sure....and like you said, one of the reason this porky car costs so much. Not a very efficent engine either, with 10 radiators, cooling is definitely an issue. To keep the cost down, they could have use a twin turbo V8 or V10 and extract the same power no problem.
Friday, December 11, 2009 4:44 PM
The Top Gear guys were saying VW looses money on each Veyron because the cars are so expensive to build. Random Comment: Did anyone buy the line of BS about the guy in Texas who Deep 6'ed the Veyron into a marsh because he was looking at birds?
Friday, December 11, 2009 7:31 PM
i remember a while back at the chicago auto show i saw a V16 from the cadillac sixteen concept, i remember thinking "wow! that engine is realy long" i suppose they made is a w16 just to fit it in that thing. but yeah people can get 1000hp out of a 2jz, so they probobly could've gone with a big twin turbo V10 and gotten the same results. but its not as cool as W16. more cylinders = more impressive i guess. i'd never pay that much for a car, though. think of how many lemons cars you could build with the cost of insurance on that thing...
Friday, December 11, 2009 7:33 PM
btw why did i get the hexagon with the richy-rich monacle? i'm broke, i couldn't even afford the chain on that thing...
Friday, December 11, 2009 8:44 PM
...no wonder the thing needs so many radiators!
Saturday, December 12, 2009 10:08 AM
I bet the extra length on 8 of the exhaust ports is the reason for atleast 2 of those extra radiators :P I wonder if the inner and outer banks have different fuel/ignition maps to compensate for the diffrence in heat. If i was in charge of designing the engine for that car i probably would have done a turbo 6-8l v12 or an equally large 12 cylinder version of this "w9" http://www.atomracing.se/6M.html
Saturday, December 12, 2009 2:48 PM
that true need some good amount of money and make a challenge.very nice engine eric.
Saturday, December 12, 2009 4:36 PM
There is probably trims by cylinder and/or multiple ECUs. In fact I think I read somewhere that there are two ECUs. That Atom engine looks crazy. I am not an engine designer, but there appears to be so many things wrong with it at first glance: 1) super wide crankpin journals, 2) super big counterbalance weights on the crank indicate that this engine is inherently very imbalanced, and 3) it cannot be packaged in a front engine application (very easily at least). Perhaps it is fine for the designed application, but I'm sure it would need some development work to get it right. They sure are using some nice engine parts: Farndon and Auto Verdi are some well known names in the racing world. Regardless of the W9's wackiness, I think it is ultra fucking cool how Atom would design something so different from what everybody else is doing. It said something about a tri-turbo 1005bhp application. I'm going to go with "uh...probably not, bro" on that one with the current piston and crank design, but good luck to them anyhow.
Wednesday, December 16, 2009 8:05 AM
Actually you might say that with 10 radiators, cooling is NOT an issue ;) . What the Veyron really is is an engineering exercise. It's not supposed to be easy to work on and it wasn't about building up some random engine. Heck, sure some EVO owners for instance built honest 1000hp engines. But could a 1000hp 4G63 ever pull a car to 253mph with not just the grunt but be able to sustain it enough to reach the speeds the Veyron does? 10 radiators or not? Like Eric said about the Atom engine, I also think it's pretty awesome how they are using an engine design no one else is, and making it the fastest car in the world at that.
Wednesday, December 16, 2009 8:13 AM
How do they get away with saying it has 10 radiators? Are they counting oil coolers, trans coolers, intercoolers...etc?
Wednesday, December 16, 2009 10:39 AM
Yes those are included. Technically they are all radiators. From Wikipedia: 4 radiators for the engine cooling system. 1 heat exchanger for the air-to-liquid intercoolers. 2 for the air conditioning system. 1 transmission oil radiator. 1 differential oil radiator. 1 engine oil radiator.
 
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