Quote:
Originally Posted by Irace86.2.0
Wouldn't it also matter whether the kit was a SC vs turbo?
A supercharger may dyno at 300 whp like a turbocharger, but the supercharger is pulling some of the power to run itself. Say it takes 30 hp to run the SC, then a 300 whp SC'ed car would be making 330+ plus drive train losses at the pistons (if that makes sense), meaning the pressure on the rods/pistons/bearings will be higher. Also, a supercharger is more direct with more low end, so the potential for damage could also be higher for an equal rwhp to a turbo'd car.
|
I don't think that's a major factor because I don't think it's the peak hp that matters, it's the low end torque that the peak hp number might represent. It's the 200 lb-ft at 3500 rpm that breaks stuff on this car, not so much the 300 rwhp at 7000 rpm (numbers aren't exact, just to illustrate). SC should do better in this regard since it's still building boost while a turbo peaks at lower rpm.
Quote:
Originally Posted by firekat
I guess if you use the fact that Edelbrock guarantees their installation on a new vehicle you can use their limit on boost as to what a stock build can take. They advertise 242 WHP & 186 ft/lbs on a 2014 BRZ. You can stop there if you want to be safe.
Cosworth also set a limit on the output on a Stage 1 installation, for internal issues if I remember correctly.
|
It's also worth considering that the stock engine is limited to the boost range that the Edelbrock kit operates in when it comes to 91 octane, so it's not entirely by choice that Edelbrock stopped there.