S2000 Under The Hood S2000 Technical and Mechanical discussions.

280whp NA for under $10K possible?

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Old 04-02-2003, 12:57 PM
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Default 280whp NA for under $10K possible?

Has anyone ever even come close? I think one guy had 240whp NA.
What parts would you add? Remember to include labor into the cost.

If you think that's not possible how about 260whp?

-Ed
Old 04-02-2003, 01:25 PM
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You should come close to 240 whp with $5-6k, but it's REALLY difficult to get much more with anything less than being married to a millionairess.
Old 04-02-2003, 01:42 PM
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Well, using Dynapack numbers, hell yes.

Right now, we've got an RSX-S with about $3500 in parts (and most are self installable) that makes 242. With headwork ($1500), cams ($1000) and some more tuning, he'll be hitting 270 whp without too much difficulty on pump gas.

So far, we've been able to get S2000s up to 230 whp or so with just the standard I/E and VAFC mods. We still haven't seen a really good race header, verified results from cams, or headwork. But all these things are on the way. I predict we'll be able to get at least 25-30 more whp from these additional mods, provided we can tune the car (engine management). Considering that you get a good intake for $200, a Spugen for $500 or less, VAFC with harness for less than $500 you're off to a good start. Figure another $2000 for headwork (everything top notch), $1000 for a race header and $600-$1200 for cams (there are some interesting developments on this front). Now you're up in the $6000 range. To get the additional power, you'll need to dump $2k into engine management and tuning (maybe not, but that's a conservative estimate for now). That leaves you a little money to potentially resleeve the block for a little more displacement and another 15-20 hp.

UL
Old 04-02-2003, 05:24 PM
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Wow! Thanks UL, everyone always says it's impossible. If the RSX can do it so can the s2k engine. All were missing is the flash ECU.

If you figured out which parts made the best gains when combined and offered a power package. I bet a ton of people would sign up.

You are a well respected board member

Thanks,
Ed
Old 04-02-2003, 05:51 PM
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[QUOTE]Originally posted by ultimate lurker
[B]Well, using Dynapack numbers, hell yes.

To get the additional power, you'll need to dump $2k into engine management and tuning (maybe not, but that's a conservative estimate for now).
Old 04-02-2003, 06:07 PM
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UL,

Ae you actually saying 280 NA whp is possible for <$10k with currently available parts?! I know you've been working on improved header flow and such over the past couple of years, but that's still in the works, correct? I've always known you to be spot on when it comes to the numbers game, but an extra 80 whp out of stuff costing less than $10k? Seems like a crack pipe dream, even from your lips...
Old 04-02-2003, 06:16 PM
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I think he is speaking in terms of using Dynapack numbers which from what I have read show higher #'s then a Dynojet etc.
Correct me if I am wrong however
Old 04-02-2003, 07:06 PM
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Interesting question. I have one of my own. Is this 280whp a peak number, like the kind of peak number a centrifugal sc generates? Basically, are we talking about reducing the power band to attain this, or adding area under the power curve as well?
Old 04-02-2003, 08:43 PM
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More area under the curve. And yes, we're talking Dynapack numbers. Merging all years of S2000s together, we see an average of about 213-214 whp, so we're talking something in the range of 60 whp.

We're about to see the first couple people with cylinder head work done (finally!), cams are coming on to the market (and it looks like we might be able to utilize the many RSX grinds coming out with some minor tweaks!), and some people are looking at some proven designs for a race header (meaning no cat, or at a minimum, a relocated cat).

These three mods should be worth substantial hp above and beyond the 10-15 whp we're seeing from the proven I/E/VAFC setups. Beyond that, a little more displacement with sleeving/overboring (not stroking) and a little more compression puts us in the range.

Remember, there are 2.0-2.2 liter B-series race engines that are _well_ over 300 whp now with inferior cylinder heads compared to ours. We'll get there, we just haven't had the market momentum that other models have.

UL
Old 04-03-2003, 07:28 AM
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[QUOTE]Originally posted by MacGyver
[B]UL,

but an extra 80 whp out of stuff costing less than $10k?


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