S2000 technical thread

**OldF** · 22nd Jul 08, 20:05

Yes, it’s very difficult to find accurate figures for power and torque. The only way to find out how the Pug and Punto compares would be to put them in the SAME dyno.

It seems that the torque should be higher because if the power is 270 hp @ 8250 rpm, the torque is 229,8 Nm (270 / (8250 * 0,0001424 = 229,8 Nm). 260 hp would give a torque of 221,3 Nm. Maybe the 225 Nm torque is the torque at peak power and the peak torque is always on lower revs than peak power.

As Anton told in the interview the Punto’s engine is very lazy below 7000 rpm, which would indicate that the torque peak is around 7000 rpm.

**Sulland** · 21st Aug 10, 11:01

Is the Abarth S2000 on par with the newer S2000 cars on tarmac, and how much is it behind pr km on gravel ?

Just to better understand the development of the S2000 class since 2006.

**Barreis** · 21st Aug 10, 11:36

Only Abarth knows difference between works and customer cars..

**OldF** · 21st Aug 10, 14:13

It would be nice if some motorsport magazine would do a comparison test between the S2000 cars.

**Barreis** · 21st Aug 10, 16:34

In Italian magazines (Tutto rally, Rally sprint) there're plenty of it..

**Sulland** · 21st Aug 10, 19:01

Originally Posted by Barreis

In Italian magazines (Tutto rally, Rally sprint) there're plenty of it..

Are they online ?

**Barreis** · 21st Aug 10, 19:09

Unforunatly not.. Great magazines.. Maybe somewhere is pdf , guys from Italy please help us!

**Sulland** · 13th Nov 10, 13:19

Who of the current manufacturers of S2000 cars will do a last homologation upgrade before 31.12 2010 ?

**OldF** · 13th Nov 10, 16:29

Originally Posted by Sulland

Who of the current manufacturers of S2000 cars will do a last homologation upgrade before 31.12 2010 ?

I think they can still do homologation upgrades (VO, option variants etc.) after 31.12.2010 but completely new S2000 with 2000 cm3 (KSR / VK-super 2000 rallyes) engines are not possible.

**OldF** · 13th Nov 10, 19:20

I forgot to mention that Malcom said in an interview (I don’t remember where) that they’ve found some good things concerning the suspension when testing the Fiesta WRC that they’ve would also will apply to the S2000 Fiesta. He didn’t reveal what it was until they’ve homologate the changes at the end of this year.

**Sulland** · 16th Jan 11, 23:16

Are gear ratios free free in S2000, and has the XTrac box ratioes that allow the S2000s to topspeed over 170 ?

**Mirek** · 16th Jan 11, 23:32

They are free but must be homologated by manufacturer. Yes, it is possible to have higher top speed. Škoda used longer gears for Ypres and some gravel events (also PG in Sweden last year). Top speed of that setup is 184 km/h I think.

**Juha_Koo** · 16th Jan 11, 23:53

About safety features... This season the side impact "foam" has become mandatory for (all) S2000s, right? But is there any (or has it changed) rule about the gap between the seats and rollcage? WRCs had that "200 mm rule" which was pretty visible to the eyes, especially in the Focus.

Going bit offtopic, but has the 200mm rule now been overruled with new WRC cars due to their smaller size? Atleast the minimum diameter of rollcage tubing was changed to a bigger one.

**adr17** · 17th Jan 11, 00:34

all s2000 with xtrac gearboxes ie fiesta , fabia and proton dont have a centre diff they all have a clutch pack in the rear diff which is operated by the handbrake , basically there are two master cylinders on the handbrake when pulled one cylinder sends pressure to the brake calipers and the other to the realease on the rear diff clutch pack , if you didnt have the clutch pack or it didnt work properly when applying the handbrake it would lock all four wheels as there is no centre diff

only allowed one set of gear ratios but two sets of drop gears , which alter your top speed for instance on the fiesta s2000 the top speed is about 108-110 mph which is the common drop gears , the other ratios giving a higher top speed was tested on ypres test but didnt go for it , it works out that to get the benifit of the taller drop gears you would have to be on the limiter for 16 secs on the standard spec as with the taller ones you lose out on acceleration

**adr17** · 17th Jan 11, 00:35

oh and the same transmission is being used in the wrc fiesta as the s2000 , so no centre diff

**Mirek** · 17th Jan 11, 18:18

Originally Posted by adr17

only allowed one set of gear ratios but two sets of drop gears , which alter your top speed for instance on the fiesta s2000 the top speed is about 108-110 mph which is the common drop gears , the other ratios giving a higher top speed was tested on ypres test but didnt go for it , it works out that to get the benifit of the taller drop gears you would have to be on the limiter for 16 secs on the standard spec as with the taller ones you lose out on acceleration

Thanks for interesting details about Fiesta. I think that with Fabia it's rather different as the engine has different characteristics and also the gearing is different with longer 1-2-3 and closer 4-5-6. Anyway Ypres or Sweden proved that it works in Fabia.

**Sulland** · 19th Jan 11, 16:38

Originally Posted by adr17

all s2000 with xtrac gearboxes ie fiesta , fabia and proton dont have a centre diff they all have a clutch pack in the rear diff which is operated by the handbrake , basically there are two master cylinders on the handbrake when pulled one cylinder sends pressure to the brake calipers and the other to the realease on the rear diff clutch pack , if you didnt have the clutch pack or it didnt work properly when applying the handbrake it would lock all four wheels as there is no centre diff

only allowed one set of gear ratios but two sets of drop gears , which alter your top speed for instance on the fiesta s2000 the top speed is about 108-110 mph which is the common drop gears , the other ratios giving a higher top speed was tested on ypres test but didnt go for it , it works out that to get the benifit of the taller drop gears you would have to be on the limiter for 16 secs on the standard spec as with the taller ones you lose out on acceleration

So if the Sadev box does not have this feature, can they put in a high 6th, just to get the top speed, even if the 5 to 6 shift drop the engine rpm more than normal ?

**noel157** · 22nd Jan 11, 19:44

The Sadev transmission, instead of master cylinders, has a motor driven disengagement device that allows the handbrake to be applied to the rear wheels only.