Postby McCoy » Sat May 04, 2013 10:47 am
Hrm, interesting reading this.
Considering my workshop has done more big power Evo X's than anyone else in Australia, I may as well wade in here. What are you planning on using the car for? Also, why hp measured at the engine? Did you want your engine put on an engine dyno before it goes in your car?
Trust me on one thing, chasing horsepower at the fly is crazy, in fact chasing any power figure is crazy.
What transmission? If it's a manual then yes you'll be okay with a 600hp car at the wheels, I know because we have one ourselves and have built up more than a few. If it's an SST you'll have all sorts of issues, once you start approaching the 270-290kW mark at the wheels, you'll need to spend some serious money on the gearbox and other areas. Then the other issue will be the AYC rear diff, if you make enough power and torque, the hydraulic pump wont be able to supply enough hydraulic pressure to open and close the rear diff.
Pitfalls, plenty of pitfalls. I'd rather not see you make the same mistake others have already made when taking on a project like this. If you want some advice, feel free to give me a call anytime, thats the least I can do.
It's easy for us to make the power and do it reliably, but it does depend on the application you are going to use your car for. We have one Evo X 5 speed manual that makes 390kW at the wheels on our dyno (which maeans it'll make about 440kW on anyone elses hehe) and it's daily driven, so it can be done, it just depends on what you want and why.
Dyno's
An invaluable tuning tool when used correctly
An invaluable sales tool when used incorrectly