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For the truly insane: 1800-horsepower Mosler MT900S

3K views 28 replies 15 participants last post by  NHRATA01  
#1 ·
Autoblog said:
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The standard Mosler MT900S is a supercar by anyone's standards. It's got a sleek body made of carbon fiber, a 7.0-liter V8 with 550 horsepower, and can hit 60 mph in just over three seconds. But for one of Mosler's customers it just wasn't enough. The owner of this MT900S enlisted the help of Nelson Racing Engines in Chatsworth, CA to build the ultimate motor for his supercar: a twin-turbo 427ci V8 producing up to 1800 horsepower on race fuel and around 1100 horsepower using 91 octane. To help make the car more streetable, boost can be controlled every 100 rpm in each gear. The first few gears are limited to around 6-8 psi, while higher gears can take full boost -- over 30 psi! We recently got the chance to see the car in person at the NRE facility where they were doing final testing on the engine. The dyno run we witnessed netted nearly 1600 horsepower before the intake collapsed from the pressure. We were told that the car should be completely finished in the next couple weeks and that we could come back for a ride. We'll be sure to take them up on the offer!

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#10 ·
Ive seen it collapsed on reciprocal engines in airplanes, I believe it has to do with negative pressure (imploding) over positive pressure (exploding) image grabbing a 2 liter plastic coke bottle and sucking the hell out of it, it will collapse.
 
#8 ·
i HIGHLY doubt that, there would have to be an INSANE pressure drop in the system to collapse a metal intake pipe.
 
#19 · (Edited)
Guys, you're looking at the wrong spot. The crushed pipe shown is on the inlet of one of the turbos. Depending on the CFM draw of the turbo at full spool and what that piping is made out of (looks to be aluminum since it's TIG'd), it's conceivable it could collapse.
 
#21 ·
Actually I changed my mind and I'm wrong. Looking at it again it looks to me like that's the pressurized outlet of the intercooler to the throttle body, not the inlet piping of the turbo. So yeah, I'm not sure I can see how it would collapse. It's never going to be under vacuum other than at idle, and no way is the motor drawing enough vacuum to distort the aluminum.
 
#22 ·
what probably happened was....


WHHHHAAAAAAAAAAAAAAAAA CLANK BANG OH SHIT!
what the hell was that?
*sees piping*

*reporter sees piping*

(quick spout some bullshit to the reporter!)

"the intake collapsed under the pressure of the turbos"
 
#24 ·
That pipe was def struck by something, notice the direction of the paint pealed and a small line that continues in the paint just marring it not scratching it afterwards, and the way the indents are would leave me to belive it is blunt force trama (haha) if the motor was strong enough to create such a vaccuum i would be left to believe that it would have completley pinched itself off, suffocating the motor... But that is just my .02 but it still passed 1600 hp thats impressive eitherway.
 
#25 ·
The crappy plastic yellow hose that came with my air compressor can take like 120psi. I'm sure a metal pipe can take a mere 30psi. That pipe was hit by something.

Besides, in that part of the piping, it would expand, not collapse. There is no vacuum after the turbos at WOT. If there would be anywhere that any pipe would fail, it would be between the turbo and the intercooler, if the intercooler was choking off flow and backing up pressure. And even in that case, it would expand.