REVscene Automotive Forum - FS: 2004 Zerosports WRB STi (450hp)

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- - FS: 2004 Zerosports WRB STi (450hp) - $29,995 (https://www.revscene.net/forums/566577-fs-2004-zerosports-wrb-sti-450hp-%2429-995-a.html)

Quote:

Originally Posted by BB6SE (Post 6322146)

I used exxon's calculations with mine. 320x1.35=432hp
the correct formula should be 320whp/(1-drivetrain loss)

How am I pulling it out of my ass? the average awd vehicle is 25% is it not?

But whatever the calculation is.. it's not 450 to the crank.

Okay. Using your formula of 320whp/(1-drivetrain loss)

320whp / (1-.3) = 320whp / .7 = 457hp

So, um, using your calculation, it is above 450 to the crank.

Am I missing something?

If I use your 25%, despite the fact I have dyno numbers which represent 29.3%, it would be 320whp / (1-.25) = 320whp /.75 = 427hp. How is that such an outrage from 450hp?

You can't "average" out a generalization for drivetrain loss for ALL AWD, RWD, FWD cars. What you can do to get an accurate hp reading is to run your car on a dyno stock, run your car on the same dyno under similar conditions modified. You use those numbers to extrapolate a reasonable estimate of crank hp.

Here is how I calculated 450hp. Let me know if its unreasonable. I'd love to learn a better way.

Stock car: 212WHP Stock crank HP: 300HP
212WHP / 300HP = 0.70667 - 1 = 0.2933 drivetrain loss

Modified car on the same dyno: 320WHP Stock crank HP: X
320WHP / X = 0.70667
320WHP = 0.70667X
320WHP / 0.70667 = X
X = 452.83 Crank HP

^^^^^ Dude's you all have way to much free time on your hands just let the dude sell his car and find something else to do with your over abundance of free time.

Quote:

Originally Posted by fukamoto (Post 6322213)

That's the correct formula:
320whp/(1-drivetrain loss)

I just use the average of 25% for awd cars. I've been using that on mine for my calculations. But you're right, that doesn't apply to all.
Anyways, the bright side of this is that I kept bumping your thread to the top :thumbsup:

Quote:

Originally Posted by BB6SE (Post 6322693)

the bright side of this is that I kept bumping your thread to the top :thumbsup:

They shitty thing is that you got yourself banned from the buy and sell because you couldn't read my simple instructions. :stupid:

Quote:

Originally Posted by orgasm_donor (Post 6322722)

They shitty thing is that you got yourself banned from the buy and sell because you couldn't read my simple instructions. :stupid:

Yikes, it was a simple joke, little extreme... no?

Quote:

Originally Posted by cs_729 (Post 6322820)

Yikes, it was a simple joke, little extreme... no?

Extreme? No. This is the Buy and Sell...not a forum discussion about hp ratings.

Power Tripping? No. I am just too lazy to explain things over and over again. Its very simple - pertinent questions about the vehicle are fine. Arguments about this kind of garbage can stay in fight club or to PM's. I gave a warning and the guy decided against it. At least I didn't use pepper spray.

Back on Topic for Fukamoto. Sorry to continue to shit all over your thread amigo.

Bump guys. Insurance runs out in 2 weeks, moving in 6 weeks.

if not sold by then, will the car still be for sale after you leave?

can you post some recent pics? or send them to me? interior/engine bay ect

I believe the car has been sold already

Bump for you if its not sold. Saw you driving by the churchs on slocan. Very nice clean car!

ooooh don u crazy man............

Car has been sold. Thanks guys.