dyno 04 s2000
)
Registered User
Joined: Oct 2001
Posts: 2,061
Likes: 0
From: Sunnyvale
what is interesting is that I know that gearing wise, it should drop out of vtec. I removed the delay valve, and I can still stay in vtec. I'm pretty sure that the car allows an overrev in 1st, similar to my e36 M3 (6750 redline in first and second, 6500 in 3rd on up)
Joined: Feb 2004
Posts: 1,324
Likes: 0
From: Milford
Originally Posted by Elistan,Aug 9 2004, 10:45 PM
Hmm.. I've never experienced that myself... But then, I always lift off the trottle when I shift. When I shift slow enough that the clutch slipped doesn't have as much effect, I can feel VTEC re-engage as the engine spins up past 6000.
Registered User
Joined: Jul 2002
Posts: 2,189
Likes: 0
From: Texas City
Originally Posted by kitwetzler,Aug 12 2004, 12:54 AM
what is interesting is that I know that gearing wise, it should drop out of vtec. I removed the delay valve, and I can still stay in vtec. I'm pretty sure that the car allows an overrev in 1st, similar to my e36 M3 (6750 redline in first and second, 6500 in 3rd on up)
How fast you shift shouldn't have anything to do with it unless you're taking so much time that the car slowes down by 5 to 10 mph during this shift process. Having said that, I suppose the delay valve may be partly responsible for what I'm seeing but I can't feel any signficant slippage from the clutch and I'm not usually blind to that kind of thing. Of course, I could be wrong.
Out of curiosity, how did you remove the delay valve?
Drive Safe,
Steve R.
Registered User
Joined: Oct 2000
Posts: 15,323
Likes: 28
From: Longmont, CO
It requires swapping out the clutch master cylinder for the '03 version, plus a little custom fab. (Haven't done it myself, I'm just basing this off memories of a post from somebody who has.)
Tell you what, next time I get a chance I'll try this... Redline in 1st until it hits fuel cutoff, then maintain that speed. Then I'll go that exact same speed in 2nd and report on the rpms that results in.
Tell you what, next time I get a chance I'll try this... Redline in 1st until it hits fuel cutoff, then maintain that speed. Then I'll go that exact same speed in 2nd and report on the rpms that results in.
Registered User
Joined: Oct 2003
Posts: 448
Likes: 0
From: Madison
When the U.S. MY04 came out there was fierce insistance that the 2.2 engine either made the same power, or less power, than the 2.0
Now the nay sayers seem to concede that it makes more power than reported by Honda or the press who repeat Honda claims. This power increase is very strong on dynos that remove the wheels from the equation, but lower on dynos that measure by tire rotation. Part of this can be explained not by a difference in weight of the tires and wheels of the cars, but by the larger diameter of the '04 wheels and tires. What this reduction should be I can't begin to calculate.
I continue to be very interested in seeing reliable reports of accleration tests of the U.S. MY04 vs. the MY03 U.S. car vs. the UK MY04 with the 2.0. We can't trust the magazine reports. If the UK car has the same engine and transmission as the '03, and if the wheel size contributes to a reduction in power to the road, then the MY04 in the UK should be slower. That is unless they have secretly boosted the power of that engine too, through other means. Temple of vtech had attempted to control for wheel size in their test, but they admitted the circumstances of their test were not ideal.
Personally, I love the handling of the MY04 with the 2.2 engine (with a custom alignment job). It handles much better at the limit than the earlier cars I drove, and is easy to accelerate in real world conditions. Love the wider rubber in the rear.
We need to put our energies into complaining about how heavy the cars are, demanding that they be lighter to compete with the lotus elise. I'd love to see a special version that was lighter and returned the 9K redline while keeping the added displacement. We need more power through weight savings, not bigger engines.
Now the nay sayers seem to concede that it makes more power than reported by Honda or the press who repeat Honda claims. This power increase is very strong on dynos that remove the wheels from the equation, but lower on dynos that measure by tire rotation. Part of this can be explained not by a difference in weight of the tires and wheels of the cars, but by the larger diameter of the '04 wheels and tires. What this reduction should be I can't begin to calculate.
I continue to be very interested in seeing reliable reports of accleration tests of the U.S. MY04 vs. the MY03 U.S. car vs. the UK MY04 with the 2.0. We can't trust the magazine reports. If the UK car has the same engine and transmission as the '03, and if the wheel size contributes to a reduction in power to the road, then the MY04 in the UK should be slower. That is unless they have secretly boosted the power of that engine too, through other means. Temple of vtech had attempted to control for wheel size in their test, but they admitted the circumstances of their test were not ideal.
Personally, I love the handling of the MY04 with the 2.2 engine (with a custom alignment job). It handles much better at the limit than the earlier cars I drove, and is easy to accelerate in real world conditions. Love the wider rubber in the rear.
We need to put our energies into complaining about how heavy the cars are, demanding that they be lighter to compete with the lotus elise. I'd love to see a special version that was lighter and returned the 9K redline while keeping the added displacement. We need more power through weight savings, not bigger engines.
