SiGGy

ummm, uhhh, errrrrrrr

CLICK ON "The V8"

http://www.m3supercar.com/

astro

the dyno chart for that car is bullshit...it doesn't cross @ 5250...

SiGGy

"(1) The dips on the graph at 3250 and 5250 are wheelspin."

why do you think it would cross at 5250??

It crosses at about 7200 rpms according to the graph? I don't get what your trying to say. Because your right... it doesn't cross at 5250, it dips...

40 oz

what the hell are those times. 1/4 mile? No way it hit 190 in less than 12 seconds.

SiGGy

its over 1 kilometer (not a 1/4 mile)

1 Kilometer = 3,280.839895 Feet

3280 Feet = 0.621212 of a Mile

ya the 190 in 12 seconds I'm still trying to figure out...

KPH would make more sense....

190KPH=118MPH, chit i dunno

Red Nj-s

That is fockin cool if u ask me.

LegendC

On ALL cars horsepower and torque have to meet at 5250. There is no way to measure horsepower by itself, only torque. Horsepower is a mathematical function of torque and rpm's divided by 5250 (If I remember correctly), therefore even with some weelspin the math does not work out. Wheelspin would cause the measured torque to be lower but the underlaying equasion cannot change.

4thGSi

Euro body with heart of American Muscle Car... How about this
Supra with Skyline Engine

CLUofI

what a waste of an M3, if you were going to transplant engines, why not start with a 325 or even a 318.

SiGGy

Huh, I found HP & Torque is calculated by the following

Horsepower = ( Torque * RPM )/ 5252

and to determine torque....

Torque = (Horsepower * 5252)/RPM


So I plugged a few of the torque #'s in to the HP equation... and I have to agree it doesn't seem to work out at all. I see what you guys are talking about now. Makes sense.

astro

there is a fellow on the rennlist (porsche board) who has a 350 chevy under the bonnet of his 911!
he is putting down in the neighborhood of 525HP and TQ...he eats TT's that are modified pretty heavily....

SiGGy

His dynos are totally whacked. So I sent him an e-mail thinking mabye he put the wrong unit of measurement in.

Man he's touchy.

here's what he says...
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From: Roger Sharp <roger@m3supercar.com>
To: dave@alienc.com
Subject: Re: DYNO chart

[ The following text is in the "iso-8859-1" character set. ]
[ Your display is set for the "US-ASCII" character set. ]
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Get your fact right before you start criticising "Max Power 511" "Max Torque
494!! the torque peaks at 7K revs, the BHP peaked at 8K or 8011 rpm if you
wanna bitch about it!

----- Original Message -----
From: <dave>
To: <technical@m3supercar.com>
Sent: Wednesday, April 03, 2002 8:05 PM
Subject: DYNO chart


>
> Why does your DYNO chart for the 5.7L Chevy engine in the M3 not look
> correct.
>
> For instance...
>
> HorsePower =(TORQUE*RPM)/5252
>
>
> If you take any one of the TORQUE readings cliamed on that DYNO chart they
> do not work. And or match up at all to whats claimed.
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SiGGy

and I replyed with this today...

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From: dave
To: Roger Sharp <roger@m3supercar.com>
Subject: Re: DYNO chart

geeeze...

I was just asking a question because it didn't look correct. And I do
have my facts correct. That chart is not correct. Especially now that
you even said it was 494ft/lbs at 7000k rpms.

494 ft/lbs
7000 rpms

(494*7000)/5252=658hp

658hp...

Is why I was asking....

I did have my #'s correct. I was asking why they didn't match a HP
calculation. As HP is calculated from torque vs. RPM. no DYNO can
measure HP directly. They measue raw torque and calculate for HP based
on rpm.

I really liked what you did, so I posted it on a site to show some people
have the guts to do cool stuff. And someone mentioned the DYNO graph was
whacked. I have to agree it is. So I thought mabye you had some insight
as to why. And I was going to redeem your dyno #'s.

chill man...

peace,

-David


B.T.W.

nice ride

Type S

i have seen E46 M3 with E39 M5 engine...

zeroday

I think this guy's speed measuring methods are flawed. He's using a cheap handheld Garmin gps to measure distance/time. Only military grade GPS's are considered acurate to less than 50 ft.

CLUofI

That has to be 20k engine, atleast.

SiGGy

totally...

Wonder what kinda of DYNO he used too...

LOL