I was only talking about factory turbo engines. most na setups with turbos strapped on arent gonna be as solid as a stock turbo. most engines can handle 5 psi though. They just cant do it for long
This is another excuse thread for posting cool car videos. I don't mind
The hayabusa is obviously faster than an R1, and the Cosworth is faster than a ZR-1 Corvette..
Have you ever looked at the book Maximum Boost? they have a a whole section on running a stock motor with an aftermarket turbo charging system. Running a reasonable amount of psi (7ish) only adds an extra strain of about 20% on the engine, and that's only when using full boost which for most people isn't for more then a minute everyday unless at something like a track.
Actually in pure acceleration the R1 is faster..
Almost the same power and a lot lighter..
edit. but 0-150mph? in 13.2 sec is pretty damn fast!
Assuming an equal level of sophistication in the engines, a normally aspirated engine is fundamentally more efficient at converting fuel into horsepower because the intake charge air is cooler. Any kind of forced induction, by definition, compresses the air and heats it up quite significantly. Even the use of intercoolers is only a stop-gap measure.
However...there's always a "but" -- you have to look at the actual use patterns for an engine. Outside of racetracks, most engines spend very little time developing maximum power. So turbos can be ideal, because while they might be less efficient than a normally aspirated engine at full throttle, off-boost, cruising down the highway at light throttle, they can often be more efficient. Think of a turbo car as a gasoline-gasoline hybrid if you will -- a small engine that has an extra "booster" for the times you need it, like merging into traffic, etc.
Steve
Well, the ZR1 does 0-150 in 15.5 seconds, and that Sierra is probably a good 400 kg lighter than a ZR1.. (ZR1 curb weight 1550kg, stock Sierra Cosworth curb weight <1200kg and the one in the vid is most likely stripped out.) Also, the vid doesn't state whether the Sierra has 609hp at the crank or at the wheels..
I'd say it's very possible that the bike in the vid is an R1..
Earn more money and get both.
N/A on track
F/I off track
For a daily driver I would pick n/a over turbo or s/c. I have enough problem with my Eagle Talon and I've seen the problem my uncle's 200SX (S12) had. Generally force induction cars just requires more care and maintenance. For a daily driver I rather sacrifice some power and fuel economy and go with a larger displacement n/a car.