Can you get to 400 without turbo or super-charger

Crash

Are you saying that the valves are controlled by a servo set?

__________________
2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary

BoBoTee

The intake valve opening and closing events are actuated by Nissans VVEL system. This complicated system uses a rotating eccentric activating a rocker arm with a moving fulcrum which can quickly change the motion ratio of the eccentric to the rocker. This gives the ability to steplessly change the duration and lift of the intake valves on the fly. The command authority of this mechanism over valve moment is great enough so that controlling valve opening is the primary means of controlling the throttling of the VQ37VHR, instead of the throttle itself. 370.com

Crash

Geeeeez. OK. So a silly tune? Can we hack this thing? (Well, I'm sure we CAN hack it. I guess the question should be HAS someone hacked it yet?)

__________________
2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary

BoBoTee

Somehow, somewhere, somebody(tuner's) is going to crack the VVEL. I'm guessing they can tune the ecu to increase the duration through the use of VVEL and replace the stock exhaust cams with more aggressive aftermarket cams.

BoBoTee

The head is where it's at. That is where N/A's can make the most power.

RCZ

A lightened flywheel will not add hp. It might release a little rotational mass which is going to be the equivalent to adding hp, but the change itself doesn't add HP.

I just put flywheel in my answer for responsiveness sake, not for power.

BoBoTee - great info.

shumby

it adds RWhp not engin HP

and at the end of the day that is what matters.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

ssqpolo

im pretty sure we will be able to get over 400hp NA in time. check out the work cosworth did for the vq35 for the castrol syntec top shop challenge. i think they pushed something near 430hp NA...which is pretty amazing. granted it will be expensive, its def. do-able. all we gotta do is hit up eric hsu at cosworth and make it happen

BoBoTee

Cost wise it's not worth it, especially just to get a mere 430hp on 100 oct gas. A turbo set up would cost less, make more power and still use 91-93octane depending on boost levels. I prefer boosted cars to N/A's, more fun to drive I guess.

MightyBobo

Not enough that it'd matter. As many found out in the LSX world, running a high HP setup with a lightened flywheel only ended up making the damn flywheel a weak point in the system heh.

And parts gaining power from each other isnt nearly as exponential as some think heh.

MightyBobo

The funny part is, in the end, 400 WHP would make this car faster than 99% of the cars on the road, and people seem to think they ALWAYS need more. More more more.

This car was built for the track, and any more than that, may seriously affect vehicle dynamics.

Sure, some 800 WHP boosted ground pounder may be cool, but does anyone honestly think they'll put that power to the ground EFFECTIVELY?

shumby

true. especially parts adding or muliplying the HP numbers. The G37S has dynos to prove that is not true.

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

BoBoTee

Sure 400whp might be enough for some, but I don't think that it would make it faster then 99% of the cars on the road. In my area there are a bunch of Evo's,STi's,Supras,Rx7s,Cobras, and Vettes running 400whp,500whp,600whp and up. I had a 400whp Evo8 myself before I wrecked it. I think a 450whp 370z would be good for street and track. It all depends on the setup.

MightyBobo

Seriously? You dont think the vast majority of cars on the road are stock and/or completely riced out w/ no mods? Not to mention all the grocery getters, vans, daily drivers and whatnot out there.

Being the fastest from stoplight to stoplight means **** anymore, really, except the high possibility of losing your license and hurting someone. Straight line racing is boring, too. Street racing is and has lost so much allure now that states are cracking down on it. Go do some legal Auto-X or road racing.

I dont disagree, 400ish HP on the 370 would probably be pretty optimal for a VERY fast track car. Anywhere north of that though, I think you're now just going into the realm of wanting to be a stupid powerful street car with no purpose other than to brag. Who cares about the ridiculously powerful local cars are, do they even track them? Or do they just street race? How often do you go to these car shows and see these blown classic muscle cars that never see anything other than a garage when they aren't at the show?

Its just not worth it for me, career and insurance wise, to get caught racing on the street. I'll stick to legal methods now, thanks.

BoBoTee

Who said anything about street light to street light racing?