our s2k compared with U.S. s2k
10-04-2001, 07:25 AM
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our s2k compared with U.S. s2k
Do any of you guys know how our s2000 which is meant to have an output of 176kw compare to the more powerful U.S., Japanese s2k's in performance?
10-04-2001, 02:08 PM
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I was under the impression that the US vehicle had the same power output as ours but the Japanese version had 10kws more.
Takashi is the expert on this so we'll wait for his comment. This will be forthcoming becasue he needs to add to his 1500 posts!!
What I can say is that one of the board members (2 x 6 spd) took me for a drive in his car when I was in LA and it definitely pulled harder than mine, no question about it.
Takashi is the expert on this so we'll wait for his comment. This will be forthcoming becasue he needs to add to his 1500 posts!!
What I can say is that one of the board members (2 x 6 spd) took me for a drive in his car when I was in LA and it definitely pulled harder than mine, no question about it.
10-04-2001, 03:04 PM
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The US cars are quoted at 240bhp which is 179kW. Ours is quoted at 176kW but I suspect that the difference is more to do with reporting standards than actual different spec. Japanese cars have 250ps which is marginally less than 250bhp, so there's not a lot of difference, about 5kW or so. The Japanese car makes more power mainly by virtue of higher compression of 11.7:1 which necessitates the use of 100RON fuel. It's possible that our cars will make more power under some conditions on 98RON fuel that's now available but since the power goes up and down dramatically with weather conditions I think it's splitting hairs a little.
Other differences for the US cars are:
Polished look wheels rather than our painted look
Cruise control
No headlight washers
No self leveling headlights
Orange indicator lights
LHD (dugh)
A gearbox that goes from 5th to 2nd instead of 4th
Other differences for the US cars are:
Polished look wheels rather than our painted look
Cruise control
No headlight washers
No self leveling headlights
Orange indicator lights
LHD (dugh)
A gearbox that goes from 5th to 2nd instead of 4th
10-04-2001, 05:51 PM
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The Japanese version has 184kW ... if I'm not mistaken that is 250hp. US, Europe and Oz have the same specs - 240hp ... here's it's interpreted into 176kW.
From what I gather most of the discreptancy comes from use of different fuels - Japan has 100RON while here we use 96RON (besides what Naishou said). You can get 98RON petrol at some stations here and I've seen some dyno reports that show that the 98RON petron gives about 2.5% more power over the 95RON. If that is the case then you're looking at 180kW localy.
Though, biggest difference in performance I've noticed with the S2000 is weather induced. It feels like the weather (or more like air) conditions can sap good 20 - 30kW from the engine. Sometimes I'm driving and it feels like the car has barely 150kW while other times you really feel the claimed power.
Also, I'm pretty sure that if you brought an S2000 from Japan, US or Europe here and line it up with a local S2000 then I'm sure that you'd see no difference and the cars would stay side by side. Takashi has a Jap spec S2000 so I'd love to see him line up a local S2000 and prove/dispove what I'm saying (rolling starts as less room for error/driver skill).
From what I gather most of the discreptancy comes from use of different fuels - Japan has 100RON while here we use 96RON (besides what Naishou said). You can get 98RON petrol at some stations here and I've seen some dyno reports that show that the 98RON petron gives about 2.5% more power over the 95RON. If that is the case then you're looking at 180kW localy.
Though, biggest difference in performance I've noticed with the S2000 is weather induced. It feels like the weather (or more like air) conditions can sap good 20 - 30kW from the engine. Sometimes I'm driving and it feels like the car has barely 150kW while other times you really feel the claimed power.
Also, I'm pretty sure that if you brought an S2000 from Japan, US or Europe here and line it up with a local S2000 then I'm sure that you'd see no difference and the cars would stay side by side. Takashi has a Jap spec S2000 so I'd love to see him line up a local S2000 and prove/dispove what I'm saying (rolling starts as less room for error/driver skill).
10-04-2001, 06:42 PM
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apparentely our petrol here in Aus is bad compared to Japan's fuel.
Their octane rating for their normal fuel is the same as our std. premium. This is why the Japanese s2000 have more power. They can be tuned to run leaner or something (=more power basically).
our highest is 98RON which doesn't come close to the Japanese octane rating for premium.
wil..
Their octane rating for their normal fuel is the same as our std. premium. This is why the Japanese s2000 have more power. They can be tuned to run leaner or something (=more power basically).
our highest is 98RON which doesn't come close to the Japanese octane rating for premium.
wil..
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10-04-2001, 09:09 PM
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At the release of the car in August 99 the question of Oz spec engines vs JDM and the horsepower difference was raised; One of the people from Honda said Oz got only 176kw (vs 180kw)because the only premium unleaded GENERALLY available in Oz when the car was being released was 96RON (vs 100RON in Japan) - so we get different pistons with a slightly lower compression ratio.
No, I don't know how this fits with some of the US threads about 91 octane over there.
No, I don't know how this fits with some of the US threads about 91 octane over there.
10-04-2001, 10:10 PM
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...so we get different pistons with a slightly lower compression ratio. ...
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I pressume that you ment in relation to Japan, not US. US has the same compression as us (and I gather same pistins as well).
...so we get different pistons with a slightly lower compression ratio. ...
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I pressume that you ment in relation to Japan, not US. US has the same compression as us (and I gather same pistins as well).