Lets Drive

iTrader: (3)

It really does depend on everything from the driver, to the cars powerband, both under the curve, and power delivery to the rear wheels, to tires used- I wouldn't base too much of the comparo (straight line) on Hp/lb. If you come off the apex, and you're not within that peaky powerband of the S2k, then you're not really going to pull on anyone...it peaks it tq out close to 7k rpm. Against an IS350, the NSX would be better suited for straight line speed from Honda, otherwise the S2K would be outran pretty easily.

Under which test methods? Its not realistic for a stock S2k to make 240 @ the wheels under current standards.




talalhz,
How did your car deal with temps (those we can measure readily)? Under most daily driven situations, the needle doesn't even reach half way.

Gernby

iTrader: (1)

I've been to 3 annual "dyno days" with the local S2000 club, and we've only had 2 or 3 (out of about 30 mixed F20s and F22s) S2000s put down over 210 RWHP on a dynojet, and all of the dynojet plots I've seen for IS350s are putting down around 260 RWHP. The only dynos I've seen for S2000s in the 240 range have been F22s on DynaPacks. It seemed to be an anomoly.

That said, I feel very confident an equally well driven and prepared S2000 would spank an IS on a road course.

ff_

The dyno I'm referring to can be found on vtec.net. I'd pull it up, but for someone reason I can't hit that site anymore. Must be blocked.

Lets Drive

iTrader: (3)

I believe you may have mistaken it for a modified vehicle, or claimed a flywheel hp number. The average S2K puts out closer to 20x rwhp, which makes sense for its track performance times, relative to other vehicles.

al503

don't know where you're getting your numbers from.

I've never seen a 350 under 250 rwhp. Most seem to be around ~260 with rt350's being the lowest (that I've seen) at just over 250.

S2000's typically dyno around 200-210 rwhp. The ones at ~220 to 225 seems to be where they top out with bolt-on n/a mods (ecu, intake, exhaust, cams, etc.)

menech

right from the Honda webpage:

• 237-hp, 2.2-liter, 16-valve DOHC VTEC® engine

http://automobiles.honda.com/models/...Category=S2000

there is no way the car can dyno at 240 HP when it doesn't even have 240 HP to begin with.

Now if you were talking about a modded S2000 than I'm willing to believe a 240 rwhp dyno...but stock..no way

Gernby

iTrader: (1)

The dyno results that ff_ is referring to DID happen on a stock '04 S2000 press car at Church Motorsports in SoCal. They suspected a "ringer", so they even swapped out the ECU with another, and it still dynoe'd over 240. This was on a DynaPack though, which consistantly dyno's about 20 HP higher for S2000s. Stock '02 S2000s were dyno'ing in the 220s on the same DynaPack. However, I'm sure that an IS350 would be dyno'ing close to 290 whp on the same DynaPack.

lobuxracer

iTrader: (2)

Back to the subject...was this at Streets of Willow Springs? It doesn't look like the big track...

ff_

That's the one, thanks. For whatever reason, Honda didn't post higher HP numbers (just torque) when they increased the displacement for 2004. It appears pretty obvious from those dynos that the HP did increase.

Personally, I couldn't care less what the HP number is (never really gotten into the whole HP wars thing). All that matters in the end, is how well the car puts power down to the pavement. How effortlessly it achieves speed, whether by power, gearing, or weight reduction.

al503

Perhaps. However, when the car rags tested the newer, larger engine, they didn't get any better times/performance.

ff_

Redline is 1000 RPM lower, which results in another shift (into 3rd gear) to get to 60 MPH. That extra shift adds at least 1/2 second to the 0-60 time.

The Chad

Under the new SAE rules for horsepower, the 2006 S2000 technically lost 3hp which is why it's now rated at 237hp. However, most dynos are in the 210 hp area, or lower, stock. I've seen F22s run about a 13.8-14.1 at events in the 1/4 mile, but I haven't ran my S2000 myself.

From my understanding of the timeslips here on this site, the IS350 is in the 13.8 range in the 1/4 mile as well, so it's extra horsepower is making up for the added weight. The S2000 isn't really a light car in the great scheme of weight, comming in at nearly 2800lbs stock.

Having driven both cars, all of that being said, if you're up against a novice driver in an S2000 you can probably pull away in the straights, but if the car is driven well, staying in VTEC through the corners to quickly pull out of them, I believe it'd be a pretty close drag race down a straight. When you are "off the cam" however in the S2000, the car is a dog and seemingly very slow.

Through the corners, I'd rather have an S2000. Less weight, slightly lower center of gravity, probably a better weight distribution, and the LSD all should help it out corner an IS.

But give any car to a competent driver and they can make it fast. I find it interesting there are so many S2000 enthusiasts with ISes.

Back on subject though...

I think it's really awesome that you took your car out on the track. I know a lot of people that that would absolutely scare the bejeezus out of. It's an awesome way to see what your car can really do.

I agree though, if the VDIM didn't chime in, you weren't driving hard enough. Unless of course you were smooth through the corners, still driving quickly, but not unsettling the car. Then it's possible it wouldn't come on.

lobuxracer

iTrader: (2)

Isn't this what we all want in the end? I sure do. I couldn't care less about how fast my car spins up a drum, as long as it gets up to speed quickly on the road. I have yet to race anyone on a dyno...

KKelly

If he was running Hoosiers (way too much tire for anything but an advanced driver), they may explain the lack of traction control activation. Better to start with a good street tire and see how you car behaves. BTW, slicks vs. street tire, assuming equal cars/drivers, is 3-4 seconds a lap quicker (depending on track). That is a HUGE difference.

ph00ny

I know you had some rear diff issues in the v. Issues aside how does it compare against the cts-v?