S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

dyno 04 s2000

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Old Aug 9, 2004 | 05:29 AM
  #21  
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Bear in mind that you can run two cars side-by-side against each other and the car with the slower 0-60 can actually pull on the car with the faster result. This is because on the street you are experiencing time to distance and relate that to the other car. And not what speed they are traveling.

Stan
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Old Aug 9, 2004 | 05:39 AM
  #22  
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Originally Posted by CrazyPhuD,Aug 8 2004, 10:40 PM
Hmmmm....depends.....from 1-2 shift I'm almost always north of 6500 when second engages. I don't powershift per say but I am coming on the gas as I'm releasing the clutch......
Yeah, but that's the difference between his MY00 and your MY04. My MY04 does not drop out of VTEC on any upshift made at the 8k redline. That might be why Honda lowered the gearing a touch on the MY04's.
[QUOTE]confusing but interesting
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Old Aug 9, 2004 | 05:56 AM
  #23  
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wow, that's about 259hp. how many miles are on your car?
i'm curious if 04's are getting stronger as it breaks in..

I think i had about 7K miles when i dyno'd. Mines is A daily Driven (Driven Hard). Stock.

The 1st to 2nd shift, for example, drops you out of VTEC. Try shifting your MY00 at 8000rpm and see where you end up.
Eh... No. It doesnt Drop out of Vtec. You think its gonna shift at 8200 and drop Below 6500 *Edit: Im assuming you were talking about the 04, if your not...Ignore previous cocky/sacastic statement


Ill post a pic of my dyno sheet. But i know it wont help much. People with pre-04s will still come up with reasons why were not faster. Im cool with it... Everyone has there take on things i guess.
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Old Aug 9, 2004 | 05:59 AM
  #24  
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Remember the 04 is slightly heavier as well, so that may help offset some of the power gained.
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Old Aug 9, 2004 | 07:14 AM
  #25  
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04 will pull about 2 carlengths on an 02 between 40 and 100mph.

Not nearly enough for me to want to make a trade.

And it wasn't a consistent pull, either. When my 02 was topping 2nd and 3rd for example, the 04 was already in 3rd and 4th, lower rpms, and I was clawing back some of the difference, until I had to shift. . .
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Old Aug 9, 2004 | 07:50 AM
  #26  
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Any 04's in the KC area, I'd like to run one...just for fun. Might even video tape it if someone is interested. I've got an 02 BTW.
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Old Aug 9, 2004 | 01:02 PM
  #27  
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Originally Posted by Sonic_S2k_04,Aug 9 2004, 08:56 AM
Eh... No. It doesnt Drop out of Vtec. You think its gonna shift at 8200 and drop Below 6500 *Edit: Im assuming you were talking about the 04, if your not...Ignore previous cocky/sacastic statement
Hehe. I own an '04, if that helps any.

Punch in the specifications for an '04 into a gearing calculator - or do it yourself. Find out the speed in mph at 8200rpm in 1st gear. (38.9mph) Then find out what engine speed corresponds to that in 2nd gear. (It's 5360rpm.) The relationship between 1st and 2nd has not changed in the '04 cars. They're still 3.133 and 2.045.

We're talking hard, immutable gears here. Those ratios are set in stone - er, steel. They are what they are. (Unless Honda is lying about the gear ratios? Unlikely.)

However, here's the reason why so many people say they never drop out of VTEC when shifting their '04 cars. (And I experience this too!) The new master clutch cylinder has a little delay valve in it. Its effect is to slow down the clutch engagement process. So what happens when you shift to 2nd at redline and release the clutch, it takes a little while before everything is fully engaged. During that slippage, there still is enough friction to accelerate the car - enough so that when everything is fully engaged, the car is going fast enough that the engine is above the VTEC transition point.

So try a really slow shift from redline in 1st gear. You see yourself end up below the VTEC point.

What's really worrying is doing a hard shift from 3rd to 4th at redline - the clutch delay lasts so long that I'm worried I'm causing more damage to the clutch than I'm saving from the drivetrain.
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Old Aug 9, 2004 | 01:09 PM
  #28  
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Originally Posted by Intrepid175,Aug 9 2004, 08:39 AM
Yeah, but that's the difference between his MY00 and your MY04. My MY04 does not drop out of VTEC on any upshift made at the 8k redline. That might be why Honda lowered the gearing a touch on the MY04's.

And sometimes the MY04's are a "little" faster. It depends, from what I'm getting from most folks around here, more on the driver than anything else. 0-60 times as well as 1/4 mile times are so close between the 2.0 and 2.2 engines that's it hardly worth argueing about. At full boil, both cars are very evenly matched. MY04 owners could (and have!) argue that since the 0-60 times are so close and the MY04 needs an extra shift to reach 60, that it's actually accelerating faster but really, what's the point? The end result is the same and that's all that counts.

My understanding is that the MY04 S2000's sold in the rest of the world (Europe, Japan, Australia) have the same mods as the cars sold in the US and Canada with the exception of the 2.2 L engine. That includes the change in gearing? If this is true, how do "those" cars stack up against the MY04's sold in the US and Canada? Anyone have performance specs to post?

As for myself, I'm couldn't be more pleased with my S2000 but I wouldn't mind if they'd have left the gearing alone. If dropping out of VTEC would have been an issue, then drop the VTEC engagement point down to 5.5k instead of 6k. I don't know how practical that would have been from Honda's point of view but it would probably work for me!

Drive Safe,
Steve R.
Checking the Honda Japan website shows that the '04 cars have the same engine AND gearing as before. Their biggest changes were the cosmetics and new sized wheels.
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Old Aug 9, 2004 | 03:16 PM
  #29  
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Originally Posted by Elistan,Aug 9 2004, 03:02 PM
What's really worrying is doing a hard shift from 3rd to 4th at redline - the clutch delay lasts so long that I'm worried I'm causing more damage to the clutch than I'm saving from the drivetrain.
Interesting! I've heard of the delay valve. Maybe you're more attuned to it than I am but this is not something I've been aware of. Granted, I haven't spent a lot of time doing full throttle, 8k shifts from 3rd to 4th although I have done a few. I certainly wouldn't characterize the amount of time it took my clutch to hook back up as "long!"

FWIW!
Drive Safe,
Steve R.
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Old Aug 9, 2004 | 05:09 PM
  #30  
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Originally Posted by Elistan,Aug 9 2004, 04:02 PM
...


What's really worrying is doing a hard shift from 3rd to 4th at redline - the clutch delay lasts so long that I'm worried I'm causing more damage to the clutch than I'm saving from the drivetrain.
I feel the same way. I hate that thing. Sometimes I accelerate fast and I wonder if people around me think I can't drive because it sounds like I'm riding the clutch.
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