Check out these specs:

Engine
Type: Inline-4, Turbocharged
Displacement cu in (cc): 122 (1996)
Power bhp (kW) at RPM: 300(220) / 5500
Torque lb-ft (Nm) at RPM: 398(540) / 3500
Redline at RPM: n.a.

Nearly 400 ft-lbs at 3500 RPM, with only 300 HP at 5500 RPM?

Look at the attached dyno sheet from a customer of Vishnu, the car is making about 320 HP at 5600 RPM, but less than 120 ft-lbs at 3500 RPM.

Anyone have any ideas what they do to make torque so early in the RPM range?

 

there is more to it but there Anti lag system is part of it.

http://www.rallycars.com/Cars/bangbang.html

 

Lots of $$$$.

Holy crap I could autox with that level of torque.

 

Second that,i recently saw best motoring international where the dude from subaru said,they invested few million bucks for developing WRC car.

 

Big turbo and a good shot of anit-lag.

 

Also, the reason for such a low horsepower rating is the restrictor that all WRC cars are required to have. If it weren't for that restrictor, the horsepower level would be much higher.

-Paul

 

so the car measures its own horsepower... thats what i understood from your post PVD04

 

simple, massive boost, but because of the FIA mandated 34mm restricter it is limited to about 300hp. i think they run over 30 psi but can only sustain it up to a limited rpm because the airflow is choked off by the restricter. that is also why they shift at 6000rpm. HP is just a function of work over time, or the ability to sustain torque at high rpm.

 

Just out of curiosity, is there any Evo on this board that is making 400 ft-lbs of torque by 3500 RPM?

Tuners obviously aren't building motors that will comply with FIA rules, so all modifications are free. So if a big turbo with a lot of boost is the answer, it would interesting to see if Dynoflash or AMS are making in the neighborhood of 400 ft-lbs of torque at 3500 RPM.

 

WRC cars run around 3 bar (43psi).

 

I'm sure they could, but you have to remember that the 34mm restrictor effectively makes the power band from 3500-6k rpm. The restrictor will make the motor breath better at low rpm and choke it up top. Accordingly, the motors are built to suit this power band. They use anti lag systems to push the turbos up to speed - however, the downside is these anti lag systems are very damaging to the turbo's life. They also of course are running race gas, and among other things which most of us here cannot afford or even obtain

 

agreed with 'ringmeister...hitting the nail on the head!!

 

No, the car does not measure its own horsepower. There is a 34mm restrictor that all the incoming air has to go through. Think of it as a 34mm bottleneck in your intercooler piping. At lower RPMs, that 34mm is big enough to flow the air required by the engine, hence the high torque number. At higher RPMs, which is where big horsepower numbers are made, the restrictor does not allow enough air to get to the engine limiting it to ~300 hp.

-Paul

 

My god that thing must pull hard!

 

Als