Is this a Jap-Spec s2000 ?

[tamay_s2k]

Just because RDA list different sizes on their website and supposedly send out different sizes when you order them doesn't mean that Honda made different sizes.

I know very little about Hondas, but quite a bit about S2000s from having owned and worked on one for over a decade, and also my involvement with S2ki. In fact I remember a thread where someone mentioned the different size rotors as listed on the RDA website and it was immediately shot down.

ok ill admit thats a valid point. mine was a major assumption since rda does send them in 2 different sizes and it would only be logical that this the factory specs but like i said, that was a 'major assumption' made by me. ive seen both rotors and have measured them and they are different. stupid why they would release 2 different 1z if factory is the same :S

^ and you post on ozhonda

LMAO

Q: How do you know something is untrue?
A: It is written on OzHonda.

at least i agree with you on this!!!! :P

[vyets]

they might have just been different for the adm cars, as i had the same trouble with rda/dba.

[AusS2000]

It's a fully imported car. What conceivable reason could Honda have to reduce the size of rotors (and hence change the entire braking system) for the 100 or so later model S2000s sold in Australia?

Don't you think it's far more likely DBA made a mistake, and RDA (which I suspect is also DBA) copied it?

Anyway, enough conjecture. A couple of guys on here have later model S2000s and can confirm or deny the change in rotor size with a ruler.

[sho]

ill get back 2 u on that 2day :P
i hope im right lmaoo :P

http://www.s2ki.com/s2000/topic/4024...page__st__1800

[GSi_PSi]

grabs popcorn.jpg

[LEWD]

There is no change in rotor size, changed by discs the other day, RDA and DBA have it wrong. The only change to the braking system in the 04+ cars is the brake pad itself runs a different compound.

Aus is right, VIN is AP1, not AP2

Where a lot of you are wrong though is that you assume the changes are only cosmetic, which they are not. Ive listed the changes below. The '06 onwards had further changes given the move to DBW, which I personally think was a backward step, but anyway.

TRANSMISSION
• Carbon fiber synchromesh replace the solid brass ones for all gears except reverse. The new design features a brass ring with a carbon fiber element bonded on the inner surface, resulting in simplified mechanical components, increased synchronizer capacity, improved abrasion resistance, and reduced weight. The weight reduction and increased capacity translates to a smoother and quicker shifting feel. Further enhancing shift feel quality is a reduction in the load acting on the disc spring. Per Honda, this tweak results in reduced shift knob operational load and reduced harshness.
• transmission case rigidity improved


CLUTCH
• Redesigned clutch and clutch case.
• To reduce the "impact torque" of a high rpm clutch dump, the new clutch has an additional orifice at the sleeve cylinder, which reduces the torque reaction acting on the drivetrain, in effect a clutch delay system.
• The clutch case has incorporated additional rib reinforcements to reduce vibrations and noises generated by the drivetrain. The additional ribs have improved clutch case rigidity by approximately 10%.

DIFFERENTIAL
• Redesigned differential; it has been beefed up.
• By moving to an FCD material (from FC), the case rigidity was improved by 40% while the overall case strength was increased 20%.
• Gear fatigue resistance improved by 5% through a change in the shot peening method for the drive pinion gear.

SUSPENSION & STEERING
• Front spring rates increased by nearly 7%
• Rear spring rates were softened by roughly 10%.
• Shock damper rates have been adjusted accordingly.
• Front stabilizer bar is unchanged.
• Rear stabilizer bar was reduced in diameter by 1.8mm to 25.4 mm to improve bump steer & cornering.
• To enhance steering feel and accuracy, the suspension geometry was altered slightly, lowering the steering knuckles by 1.5mm.
• The EPS (Electrical Power Steering) system features an optimized steer response gain, while the software was updated to improve steering linearity and agility. The steering gear ratio was also changed to match the new suspension and tire characteristics. Increased rigidity of the steering gearbox supporting mounts results in improved steering precision as well.
• One of the "features" of the outgoing S2000's rear suspension was its tendency to exhibit bump steer at the limits. Honda's engineers have attacked this issue from several angles. Rear toe in was reduced from -0deg 19' to -0deg 10'. At a 50mm bump deflection, toe-in has been reduced from -0.19 degrees to -0.05 degrees. Secondly, the rear roll center was lowered from 101mm to 92mm. Honda claims improved roadholding under full suspension compression or during severe body roll situations.
• Honda claims improvements in overall stability, steering accuracy/effort/feel, bump steer characteristics, wet performance/hydroplaning, high-speed stability, smooth ride comfort, choppy ride comfort, and at the limit controllability.
• steering wheel lock-to-lock increased from 2.4 to 2.6 wheel turns.
• steering ratio lowered from 13.8:1 to 14.9:1

CHASSIS
• A new cross brace at the very front of the frame (positioned horizontally, in front of the radiator),
• Reinforcements at key crossmember joints
• Additional fixing points to existing braces
• Reinforcements to the rear wheel arch bulkhead
• Front suspension upper arm brackets were strengthened, further benefiting handling.

WHEELS & TIRES
• New 17" wheels, wider in front and rear (by 0.5" and 1.0" respectively), wrapped in wider tires.
• In the front, 205/55R16s were replaced by 215/45R17 tires.
• In the rear, 245/40R17s bumped the incumbent 225/50R16s.
• Honda says both changes are key contributors to extended cornering limits.
• The tires are now Bridgestone Potenza RE050s, replacing the former model's Bridgestone Potenza S-02s.
• The new tires feature a completely different tread pattern, intended to improve the balance in performance between dry and wet conditions.

BRAKES
• To improve fade resistance and stopping power at and near the limit, the brake pad material has been changed from a non-metallic compound to a new metallic compound. The new pad material (Jurid632) provides greater frictional stability in high-temperature operating ranges.
• Master cylinder ratio has been changed from 6.5 to 6.0, resulting in an increased feel of rigidity and "build-up" quality (Honda's term for more stopping power in the latter stage of brake application under constant application). Honda claims less pedal travel is required than previously.
• The ABS system has been improved through the use of split-regulation yaw-control logic for improved stability on split-μμ surfaces when the ABS is triggered. Furthermore, though more powerful than before, the system (consisting of the CPU and modulator) has been downsized for both precious space and weight savings.

[AusS2000]

To Hondapop, whose post seems to have disappeared: Yes, which is fortunate because all the maps would be for Japan.

[VeYzZii]

http://www.s2ki.com/s2000/topic/8801...#entry20744140

LOL shutdown

[Setanta]

Silly question, but if a car is Jap Spec then surely it only has a speedo that reads to 180km/h as per every other car that is built in Japan for the Japanese market and as per Japanese legislation. I know that you can run a rev-cut defender (I have in two imports) but if you change the speedo to an Aus one then you need to start messing with the ECU as the signal changes. That is the first thing I look for when someone starts talking about a Jap build.

It also begs the question "how did it get into the country?". Private import? What are are the import tags on it? It can't be imported via SEVS and if it came in as a Victorian "rebuild" then all sorts of shit is going down over the rorting of that system and there are cars coming off the road because they aren't legally imported into the country and you should steer clear - just because a "rebuild" is on the road now, doesn't mean the govt. cant take it off you - caveat emptor. If it's just the motor/ecu/cosmetics transplanted into an Aussie spec vehicle then ask for the paperwork to prove it. If it's "Jap spec" because it was built in Japan then old mate is having you on. These are all questions you should ask before debating brakes and other differences. Otherwise, it's a unicorn - a mythical beast that people believe in, but may not actually exist.

[AusS2000]

I know speed is limited to 180kmph in Japan, but I didn't know speedometers were. Either way it's a digital speedo so unless the extra 3 segments of the first LED digit (required to make a '2') are disabled there won't be a difference.

As to how it got in the country, beats me, although I know of several other JDM imports running around so it certainly is (or was) possible.

[Setanta]

JDM S2K speedos will not read over 180km/h even with the speed limiter bypassed:
http://www.s2ki.com/s2000/topic/3725...e-than-180kmh/
http://www.shc-forum.com/viewtopic.p...28cc180c9c5798

as a few examples. I have a feeling that while there may be a few imports running around, there are also more than a few people who are deluding themselves. While I don't believe everything I read on the net, my experience has been that if people who actually have the car (as they were brought into the respective countries) are discussing the issue, there might be some merit to questioning some claims (such as the one in the OP) that the car is JDM.

The 180 speedo setting comes from JAMA and has been in place since the '70s. It's a gentleman's agreement, not legislation but even my old widebody JDM Starion with digital dash (80s tech) had a max speedo reading of 180 as do all skylines, type Rs, S series cars, supras etc etc.

[DreadAngel]

It is possible to import some cars [FD2R, NSX-Rs, etc], Personal Import as you mentioned is the only avenue but this is a very lengthy and headache process unless you know some backdoors...