wow you're quick. haha i realized i screwed up and changed it about 10 seconds after I posted it haha
i know, i have a wrx which is being modified into a rally car... after doing the downpipe to straight pipe out back I started up the car to let everything warm up, shut it down to re-tighten and was lucky to come out of it with my hands still intact. Those VT cars are insane. JDM 2.0 motor with VF-something twinscroll turbo. full 3" exhaust to a high flow cat where the muffler would be. full motec800. the rear suspension is completely custom, A-arms and all. the rear gets more travel than a WRC car...almost as much as a trophy truck.
trophy trucks have over 30"+ of travel w/ almost 16" of shock stroke. theres no way a rally car has that much or even half of that
Jim rode along at the X games. TP has a professional navigator for the real rallies where TP can't memorize the entire course.
Exactly.
HP is torque times engine speed, so if you tune your turbo to provide all it's boost low in the rev range you can crank out huge torque numbers without breaking the HP limit.
yup. plus they are running anti-lag which gives them max boost as soon as possible. A few years back the prodrive wrc cars were producing 200+hp at 2k rpm (idle) and were making a full 4-5bar boost at 3k rpm all the way to 7500rpm. pretty nuts.
That would be 525 ft/lbs of torque at 2000 rpm, damn thats a lot.
troke ratio). The exception being Subaru because of the horizontally opposed cylinders limit how wide the engine can be and still fit in the chassis.
yaaa.......there are 2 types of anti-lag. Most rally cars in the US produce it through the ECU. It depends on how it's set up... it can either be setup through the motor speed sensor (rpms) or throttle position or both. Basically when the rpm's drop below a certain set level and/or the driver gets off the throttle... the throttle plate stays open as well as the valves. The injectors fire pulses of fuel into the cylinder and out the valves. from here the gas explodes in the hot exhaust and then spin the turbo. From here I know that VTcar add a charge pipe to the throttle intake. that charge pipe charges with air so there is instant pressure when the driver gets back on the throttle. this is all tuned into the ECU and can only be done with an aftermarket standalone ECU. Hydra ECU, Motec etc. as for the wrc car... here's a good explanation from subaruwrcspares.com
And one other thing that may not be obvious to non-turbo guys: Turbo-cars are forcing fuel and air in there at very high pressure. You make insane amounts of torque with turbos, and there are ways to bring the torque down to lower RPMs, but the bottom line is that when you're forcing air and fuel in there under pressure, there's going to be a LOT of torque when that mixture combusts. Far different than a normally aspirated engine, or you have to move HUGE cylinders with other engines to get these same kind of torque values.
it has a lot to do with the transmission they use as well as their diff setup.
