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Originally Posted by s2000Junky,Feb 26 2009, 01:57 PM
I would be suprised to see a 2 liter engine make a broad power band no matter what turbo it has when its in the 600whp + range. There is a point no matter how much you force it, the motor is still a 2 liter and has its mechanical operating range = narrow/peaky. When you build for max peak, low/mid fall into place where they may. I think this is most evident in the 700-800whp graphs we have seen. You want to make more low/mid with your high, then your going to give up some high etc...
Originally Posted by btstone84,Feb 26 2009, 06:14 PM
broad enough
you've got basically the same powerband as that other dyno if it was over RPM instead of MPH.
some of camuman's dynos were in 5th gear since it was spinning 4th. at about 8400 rpm it was spinning the rollers at 132mph, at 104 mph he's at 6700. just guessing for the differences in rpm from the 2.0L motor to the 2.2L and use those speeds and rpm's on the 800+whp dyno and he's probably got 700+whp from ~7000rpm to 9000rpm.
so for the RPM range you're over 600whp he's over 750whp, that's not too bad
he prob has 1000 or less rpms of usable power. with that steep curve you can tell its coming in really late. i run 125 in 3rd, so he is prob in 4th and that power is not usuable
he prob has 1000 or less rpms of usable power. with that steep curve you can tell its coming in really late. i run 125 in 3rd, so he is prob in 4th and that power is not usuable
^^^ your numbers are impressive no doubt, but from what I can see from the two dyno graphs from the shifting point of 6k on, your basically the same hp curve, yours just doesn't peak because your lacking 160whp, so I'm unclear as to how his is less "usable" or broad then yours? Also if i'm off in my assessment of the two graph comparisons, if he is lagging behind 1000rpm in boost so what? That's what a close ratio 6 speed is for. He's going to well make up for that split second a 1000rpms goes by from his extra 160whp
unless the other guy is going from 105mph to 135mph in 1000 rpms (highly unlikely) he's got 700+whp for the entire rev range of each gear when shifting at redline. obviously a broader range would be awesome, I'd love to have 700whp at 2000 rpm, never gonna happen though. the more turbo power you have the less low end / mid range you're gonna end up with, it's that simple. that being said it's still a wide enough range to cover the entire time he's in each gear.
i dont think you guys understand how this works...
1--i have longer gears than a stock s2k, so you have to take that into account
2---when you making 600+whp, how long does it really take you to go 20mph? maybe 1000rpms or less. if you have ever been in a s2k with much power, it is unreal the speed you climb
3--compare his to mine like kutsu did....his curve is made for the dyno...if he were to drive it on the street or try to launch it at the track, he would have major difficulties....that why they didnt show RPMS on the bottom and opted for MPH. because the graph sucks
