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 Originally Posted by aaronng
All about how much air you can feed into the engine (regardless of cylinders and capacity). The R35 GTR has twin turbos, which push air into the cylinders at above atmospheric pressure, meaning over 100% volumetric efficiency. If this NSX is still NA, then its volumetric efficiency will be below 100%. The more air you cram in, the more fuel you add in, giving you more power.
errr, Vtec and iVtec already gives honda its engines to surpass 100% VE at top end rpms. You dont need FI to achieve 100% VE. Honda WAS the first manufacturer in the world to achieve 100hp/per litre in 1989. They also achieved 100% VE back in the 60-70s.
I for one don't doubt hondas Technology. Even the NSX-R was faster than the R34 GTR in the Drags, 1/4 mile and track.
Last edited by jugbugz; 26-06-2008 at 11:52 PM.
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 Originally Posted by jugbugz
errr, Vtec and iVtec already gives honda its engines to surpass 100% VE at top end rpms. You dont need FI to achieve 100% VE. Honda WAS the first manufacturer in the world to achieve 100hp/per litre in 1989. They also achieved 100% VE back in the 60-70s.
I for one don't doubt hondas Technology. Even the NSX-R was faster than the R34 GTR in the Drags, 1/4 mile and track.
No, it still doesn't achieve 100% volumetric efficiency. Honda's VE is still lower compared to a few other brands that use NA. There were other manufacturers that achieved 100hp/litre before Honda too. Don't be a blind fanboy. What else are you going to spew out? That Honda invented variable valve timing and lift? Not true. Fiat holds the patent to that from back in the 1960s.
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Stocky CL9 - 1:17.2
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ahh... but honda DID invent the wheel!!
FOR SALE: Injector seal kits || Dayco B16A timing belt
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 Originally Posted by kraiye
ahh... but honda DID invent the wheel!!
Yeah, but an Aussie dude stole the idea by patenting it before Honda did. 
http://www.newscientist.com/article/...australia.html
Last edited by aaronng; 26-06-2008 at 01:22 PM.
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Stocky CL9 - 1:17.2
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nice of them to try, sounds like an interesting car. I hope its NA though.
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Thread MERGED...
No point in having two of the same thread....
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 Originally Posted by aaronng
No, it still doesn't achieve 100% volumetric efficiency. Honda's VE is still lower compared to a few other brands that use NA. There were other manufacturers that achieved 100hp/litre before Honda too. Don't be a blind fanboy. What else are you going to spew out? That Honda invented variable valve timing and lift? Not true. Fiat holds the patent to that from back in the 1960s.
I was talking about production car. Honda DID make the 100hp per litre first.
haha I know Vtec was made back before the 1960s, Honda just put it into world wide production. I'm pretty sure Type R engines hit 100% VE.
Last edited by jugbugz; 26-06-2008 at 11:52 PM.
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From auto express



Honda’s next NSX
New V10 sports car spied undergoing development.
Auto Express Car ReviewsText: Peter Lyon / Photos: Larson23rd June 2008Shrouded in a zebra-like camouflage, Honda’s new V10 supercar finally broke cover this week. And it’s the latest step in a project to replace the NSX.
Our spies caught the model lapping the Nürburgring in Germany. Development has only just started, and engineers have two targets.
Firstly, they have been challenged to get the two-door’s suspension set-up just right. But more than that, Honda wants to build the fastest production model around the circuit. And while the mechanical tweaks will be familiar territory for the firm’s technicians, breaking the lap record will be no mean feat – as the newcomer’s rivals, the Nissan GT-R and Lexus LF-A, are both capable of sub-seven minute 30 second laps of the legendary 13-mile race track.
The as-yet-unnamed coupé will get a 550bhp 5.5-litre V10 with cylinder deactivation technology. That means it will shut down five cylinders when engine load is light, thus reducing fuel consumption and emissions. Torque is set to top 570Nm, too. One source told us the 2+2 will wear a ‘hybrid’ aluminium and steel body to reduce weight, and sit on a modified version of the US Acura RL saloon platform.
An eight-speed auto gearbox with paddleshifters is on the cards, while hi-tech four-wheel drive will provide the best possible traction.
Expect the newcomer to debut in late 2010 or early 2011, when it’s likely to cost upwards of £90,000.
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 Originally Posted by jugbugz
I was talking about production car. Honda DID make the 100hp per litre first.
haha I know Vtec was made back before the 1960s, Honda just put it into world wide production. I'm pretty sure Type R engines hit over 100% VE.
Explain to me how you achieve 100% VE with an NA engine. As long as your intake manifold has a vacuum, you will NEVER reach 100% VE.
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Stocky CL9 - 1:17.2
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 Originally Posted by aaronng
Explain to me how you achieve 100% VE with an NA engine. As long as your intake manifold has a vacuum, you will NEVER reach 100% VE.
Well we all know that as a rule that N/A engines do not operate at 100% VE. But in a very narrow RPM it does hit 100% and some surpass 100% with tuned motors.
iVTEC does brings a broader range of high VE throughout the RPM compared to VTEC. But its not impossible to hit 100% VE with a N/A motor, just not everywhere in the RPM.
Of course Turbos can do it but thats cheating 
Anyway while we were on the topic of these things I thought I'd post this interesting page about HONDA's background. Its a good read!
http://www.ek9.org/forum/engine/2631...enjoy-ek9.html
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I know I'm nitpicking, but in the article, he said hp/litre means volumetric efficiency which is incorrect. And the paragraphs after the VTEC section was disappointing. He did a good job of writing up the racing history though.
Last edited by aaronng; 27-06-2008 at 11:45 AM.
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Stocky CL9 - 1:17.2
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Cant be assed reading the whole thread, but theres a writeup about it in todays Herald Sun Cars Guide about it. Honda are tipping it to spank the Nissan GT-R around the Nurburgring.
Price listed at $150k mark.
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