im going to be buying a 2000 0r 2001 s2000 shortly and i was wondering for a daily driver should i turbo or supercharge the car. if i go supercharge what kind of performance numbers should i expect 1/4mie time and hp thanks.

 

I do not know that much info, but with a supercharger you should be putting down 12s 1/4 mile...

For daily driver, if you don't want many problems, go with Supercharger, but if you want to get a turbo, just make sure you tune it right, and you should have no problems. Both are nice, but personally, I would turbo it, just to be different.

 

Me myself i think the supercharger would be be more better for the motor as a daily driver. The supercharger works with the motor to create it's horsepower. I can't really say to much about the turbo kit for the s2k, haven't heard and pro's and cons on it yet. I remember awhile back on the superchargers the mounting brackets were failing, but i think they fixed that. I am doing the Comptech Supercharger on mine here in the next two months. I read somewhere of someone installing a front mount intercooler with the supercharger, i am gonna have to call comptech and seek some more info on that cause that'd be a awsome sight from the front,plus not only that i'd imagen it'd give a nice power addative beings it's getting a fresh supply of cool air.
Maybe you should do the turbo so that way you can tell us the Pros & Cons

 

i heard vortech designed a supercharger i wonder if thats out yet.

 

Centrifugal Chargers

Especially on a motor like the S2000's, not a good idea.

 

please explain your opinion

 

The comptech supercharger is only supplying you with top end power. Pretty much, many owners who have the SC describe the power as a "Super VTEC" , and it maintains the similar characteristics of the engine. Cost is usually around 5 Gs

Turbo on the other hand is very tricky IMO. But, luckily, Speedcraft engineering in Florida made a very clean kit for a very pricey 6500...but.. at 8 pounds of boost you have roughly 334 hp. And very drastic midrange torque and hp increase as opposed to the SC. (6 pounds you have a bit over 300 WHP) I have seen two dyno plots ..and the TC wins hands down in power and lower end torque.

for the price, I think supercharger is better. Because the turbo kit is 6500 + exhaust (3 inch important) + turbo timer + gauges + boost controller. Nearly 8 Gs.

whereas the supercharger you will need some sort of fuel tuning such as a V-AFC. And bolt ons such as header and exhaust will give you up to 15 hp with the SC. you would probably spend about 2 thousand less with the SC.

I have heard a best of 13.1 with the comptech unit. But a best so far of 12.1 in the quarter with the Turbo.

 

Low end boost is minimal, try something like the Whipple charger used on some NSX's!

 

dont you gain more low end power with a SC and less with a TURBO??? you guys got your **** wrong.....i saw a video....s2000 SC'd vs s2000......it let the stock one go first and then SC s2000 didnt even launch....it just floored it and won.

 

Do some research before you start typing. Dynos don't lie go to comptechusa.com and look at their own dyno chart. More power top end!
http://www.comptechusa.com/images/dy...percharger.pdf

 

I was in on a groupbuy for the Comptech Supercharger back in the summer. $4000 + shipping. Not enough people got in on it though and I changed my mind anyway. It was through Modacar I think they sell it for like $4600 regularly. I wasn't very impressed with the numbers and all the extra stress on the engine just didn't seem worth it. Upgrading the differential and clutch is a must! Comptech's ran a 13.1 1/4 mile, that is the best reported so far and you know they had that baby tuned to perfection. No way you'll run that just by slapping on the supercharger. Maybe with headers, exhaust, vafc, etc.

 

FI on an S2K...the stupidity continues

 

hahah i thought youre s2000 was *garaged for the winter* blznfast......anyways....hybridgen...i saw the dyno and it does help the mid range torque and horsepower curves...the top end is inevitable when using forced induction....who would buy a turbo with no topend gain?....and cuz of vtec and a high comp rate. stupid....turbo dynos usually show no gain down low and then all of a sudden BOOM! mad gain....whereas this dyno shows tq and hp gains starting from 3000rpm and goes throughout the curve.....think im stupid?
LEARN HOW TO READ A DYNO BEFORE YOU GIVE ME THE LINK


[Modified by todaysivxx, 8:39 PM 1/6/2002]

 

im just kidding tho....i dont work there....i work at hks but have an apexi exhaust?

 

your thinking of a roots type blower, which isn't even available for the s2000. comptech makes a centrifugal, meaning it makes peak boost (horsepower) at redline, or so that's the theory behind that type of SC. Too bad the s2k's are absolutely slower then all hell before vtec kicks in, because this supercharger is only useful for racing IMO, not street use. Turbo on the other hand, depending on the specs...would give a lot more mid-range and a whole lot more top end like hybridgen2 said...which is perfect for the s2k.


[Modified by PureTeg420, 10:36 PM 1/6/2002]

 

I deleted a bunch of posts that I thought were off-topic/inflammatory

Got a problem with it, IM me, we can talk about it.

As for the topic at hand...

Different turbo systems can have very different characteristics. Some can be low-boost fast-spool applications that give excellent mid-range gains, but are less dramatic at the high-end. The applications where you see little/no low/mid gains are generally large turbos built for high horsepower that take a long time to spool.

As for superchargers, some superchargers like the Jackson Racing kits for Integras and the Comptech kit for the NSX use Positive Displacement compressors, which move a set amount of air per rotation, so they deliver consistent boost and fairly consistent efficiency throughout the RPM range, and thuse give good gains from low end to high end. Actually, because of heat, they can tend to look not-so-good at the very high end (like torque starts to drop off a little early, even though it's still making good HP).

However, the Comptech Kit for the S2000 uses a Vortech-style centrifugal blower, which can generally only be tuned for a specific RPM range (where the compressor is at peak efficiency), and that RPM range by definition has to be at the top of the motor's operating range, because you don't want to run the compressor too far above its peak efficiency because it'd build up way too much heat and probably destroy itself. So the result is that on high-revving motors, Centrifugal blowers tend to only help high-end power, because they're not making enough boost at lower RPMs. So the Comptech kit on the S2K, doesn't do much in the low/mid-range, but does a lot at the top end. As a result, the car can still feel anemic at the low-end. So it'd be great on a track car, where you only care about top end power. But for a street driven car, it's probably not that great a solution.

Now, as other people have mentioned, the S2K has really high compression, and thus, is problematic for forced induction. However, it can fairly obviously still handle boost if done right, judging by the number of cars out there that are force-fed and not blowing up (yet, heh). It'd seem to me like the ultimate setup for an S2K would be a low-boost (5-6lbs) fast-spooling turbo that would help the midrange torque and driveability, and of course be intercooled for engine health.

-Mike

 

thank you grippgoat. YEah I had a few posts to Si boy...but I deleted them too, why start all this trouble? No hard feelings SI ...

but heres the deal.

The speedcraft kit, ...which I am goign to get..has a ball bearing T-60 turbo. And totally out does the Comptech SC in the midrange and produces just about a bit highter at the top end . Given both units are running 5-6 psi and properly tuned. I am not speaking for all turbocharger and supercharger systems (like grippgoat mentioned, there are many different types.)

I have had a turbocharger, and supercharger, and NA.with pleny of dyno time for each application...so I pretty much know what Im talking about in this case. And I know..how to read a dyno plot Doesnt make me an expert, I must admit, but hey, what am I misinterpreting again???? in regards to the dyno I have supplied you SI???? There must be something that we are not communicating to eachother properly. Because as I see it, *from the dynoplot* the Speedcraft turbocharger kit has an advantage over the comptech from the start and meets up a bit over on the top end. So you tell me. what am I reading wrong?


[Modified by hybridgen2, 5:03 PM 1/7/2002]

 

for those of you who dont know which dyno I am referring to

look on

http://www.s2ki.com/forums/showthrea...=Derrycks+dyno

scroll down to the like the 45th post. Close to the bottom of the 1st page of the link. A guy by the name of WESMASTER has overlapped his dynoplot (SC with 300 whp) vs. (The turbo )

Its pretty obvious: At about 4000 RPM, the turbo'd S2k hasabout a 25 hp lead.
At 5500 RPM the turbo S2k has a 50 hp lead. And you can see for the rest on the link

Like I said. top end hp is quite insignificant in this case. Since they both have around the same peak hp, does that mean that they are both as fast. NO!!!!!!!!

The turbo S2k wins hands down in this situation. I hope this has cleared things up.

 

Yeah, what he said. Peak hp doesn't mean crap when the turbo makes 50% more hp from 3k-6k.

Turbo S2000 vs Stock S2000
http://active.vaporspace.net/~diablo...s/MOV00021.MPG
http://active.vaporspace.net/~diablo...s/MOV00022.MPG

 

I'm surprised no-one has mentioned the fact that the "balance" of the car will likely be off when you add forced induction.

Serious consideration to brake and suspension upgrades should be given. With over 300 whp I would imagine that a big brake kit would also be required (as well as wider/stickier tires). That is unless you like pulling your wrecked car out of the ditch.....

 

Yeah I agree, that a consideration of stepping up the brake application is important. However, it depends on ones driving habits.

Maybe its just me, but I think that the S2000's brakes are amazing!....perhaps someone whos very knowledgable in that area could share with us...as to whether or not the stock brakes will be enough.

 

For the street, I'm sure they'd be enough. On the track, who knows. The extra straight speed might put enough more load on them that they might fade.

As for suspension, I don't really see that much reason to change it. Unless maybe you're having big power over-steer problems, but a fatter front swaybar or some more rear toe-in should solve that.

-Mike

 

Some Porterfield pads and upgraded brake lines wouldn't hurt, don't think a big brake kit would be necessary. I'd definately invest in some meatier tires, especially in the back, 265's or 255's would be ample...

 

Well, let's see. Whether a car is stock, supercharged or turbocharged, stopping from 100mph is stopping from 100mph. The difference is how fast you get there. The stock S2000 brakes do very well at the racetrack with the addition of better pads (duh) and brake ducts.

Suspension absolutely should be re-thought.

Brian.

 

I haven't driven an S2000, but I'm going to assume its brake pedal feel is comparable to other sporty Hondas (NSX, GS-R, ITR), in which case, it probably doesn't really need new brake lines. That's up to personal preference in pedal feel. Personally, though, I'd just as soon stick with stock for a while on a new car. (now that I think about it, I should probably replace my OEM lines on my NSX, since they're 11 years old, and I might as well get stainless if I'm gonna replace 'em)

If you're going to put meatier rears on, then some suspension mods may be necessary to keep the car balanced. But everyone I've seen who's tried to modify the S2000 suspsion, even autocrossers who've put $5000 shocks in the car, have ended up with a car that's more tail-happy than stock, especially when used with stickier tires. I don't know if it's a problem with spring rates or bushings or what.

And it's true, braking from 100mph is braking from 100mph. However, if you're at a race track going down the straight with 50% more horsepower at the wheels, then you'll be braking from a significantly faster speed at the end of it. On the street, your top speeds will be constrained more by safety, and so you'll be fine with stock brakes, maybe with new pads. Either way, I certainly wouldn't spend money on a big brake kit unless you have problems with fade.

-Mike