Cannysage

iTrader: (29)

not as bad as 4 bangers, but torque #s always fall way behind HP as we mod. What can we do to gain more torque??! It's common that an FI'd Z would be something like 400 whp and 330 wtq.. any ideas?

roast

iTrader: (2)

Why you are so worried about torque?

TK2005

Why do you think that is a common FI number. Some JWT kits have been making 480rwhp and 580lbs of torque. Most of the APS kits are matching hp for torque. The Greddy kits show a little more distance between hp and tq but it isn't badd either. I know some of the single kits are making number like you said but not all. You must be thinking superchargers only.

Acidskie

LOL I'm at a loss

Cannysage

iTrader: (29)

violent racing's been building some beefy cars with a whole lot of torque. I wanna follow the same foot steps. wonder what their secret is..

Kolia

iTrader: (2)

An engine with a flat torque curve (like the VQ35) will always produce "more" HP than torque if it can rev above 5,252rpm.

Like Roast said, Why you are so worried about torque?

Cannysage

iTrader: (29)

^ why WOULDN'T you be worrying about torque? You guys make it sound like torque isn't all that important when modding a car WTF?

I'm worried about everything.. gaining more Hp, weight reduction, traction etc.. torque is just another equation to the whole picture.

Kolia

iTrader: (2)

Torque is important of course.

But how you apply it is very important too.

A +50lb of peak torque at 4,400rpm but little gain higher or a +30lb of torque accross the rpm range won't have the same effect. I'd rather get to +30lb everywhere.

And if I do that, the HP numbers will always progress faster.

If the Torque and HP number get closer simply mean you're not gaining as much torque high in the rpm as you are in mid range.

Peak numbers (Torque or HP) are meaningless on the street.

roast

iTrader: (2)

If you want to go fast you should be worried about making more HP, in other words more torque at higher rpm, not peak torque.

Are you modding your Z to pull boats, or what?

Cannysage

iTrader: (29)

not neccesaily check out the 2 beautiful power curves. I would like to gain some mid range toque for a better pull 2nd and 3rd. Not too concern about low and highs.


http://www.violentracing.com/

chuckie311

iTrader: (2)

most torque falls behind on FI with supercharges not with turbos.. thats why you have 400whp and 330 tq..if you want the tq go turbo.

plumpzz

iTrader: (10)

on a higher reving engine, when the HP matches teh torque, it usually means the torque curve isn't flat at all.

NeoRacer_106

because its embaressing to get pwnd by a mini van

Kolia

iTrader: (2)

Peak HP at 5,400 RPM...

These are TDI-like numbers. Look at the torque plummet past 4,400rpm.

It's some big numbers I agree, but the engine feel must be bad with less than 2,000rpm of usable rpm.

davidv

iTrader: (2)

If you study dyno charts, you will see unusual horsepower and torque numbers. Like 270hp and 260lbs torque. There are unique intake (MREV2 for example) and exhaust mods that keep peak torque relatively high in relationship to horsepower.

Art Vandaleigh

iTrader: (16)

I think the VQ is a great engine and has a nice, flat torque curve throughout the rev range. For a 3.5 liter engine, its pushing good tq numbers stock. I'm also coming from owning 4 banger honda/acuras before purchasing my Z, so im pretty satisfied at this point

Starchecker

I think you are on the right path, JWT does seem to be able to invert the HP/TQ curve. It's not uncommon to see 400whp and 430 wtq. Just has to be the design of the kit, maybe the smaller turbos spooling up faster, that's the only design difference I can tell in the kit.

Are you ready to drop the money on TT's, if so you're in CA so I wouldn't fight it, give VRT a call!

Cannysage

iTrader: (29)

I noticed this too.. the torque curve is all over the place.. zup with that??

finally there's an imput that's along the lines of what I was looking for

correct me if I'm wrong, but wouldn't it be kinda dangerous to have all the toque in the higher end of the rpm, with cars putting out that much power??
first chart has a very clean power curve.. no funky dip and such. 2nd chart has some serious midrange pull between 3k ~ 4k. but I do agree, the torque curve falls to short..

plumpzz

iTrader: (10)

Its the way the engine is designed. Its made for NA so its obvious that power will drop off faster if the heads are flowing more than they're designed to, as in FI applications. The best way to get rid of that is FI cams (w/ no lope) and bigger heads. However, if you did this NA, you'd loose all power below 4500RPM.

Besides, peak HP happens at higiher RPMS for a reason. Find me 1 engine that puts peak HP at the same piont at peak torque (gasoline :-D ). It wont happen cuz HP is a function of RPM and torque.

Cannysage

iTrader: (29)

I first that you were talking about rev-up engine on the 06 on your original post.. but yeah..



also.. when you have a torque monster of a car, where the tq curve way above the hp, sorta speak, wouldn't having a flat tq curve be less relevant??