I have gotten the weights and HP ratings from a few cars and divided the HP into the weight to get a number:

Porche 911 GT3 3,043 380 8.00
BMW M3 3,415 333 10.25
G35S 6MT Leather 3,398 260 13.06
BMW 330Ci 3,285 225 14.60

Would it be safe to say that if we got the G35 ratio to that of, lets say the M3, that would could then in, with relative certainty, run with the M3?




There's a monster in my garage
G Monster

 

yeah as long as you have the appropriate suspension and wheels (and transmission) to handle all that extra power [img]/w3timages/icons/wink.gif[/img]

<font color=green>-Rambo</font color=green>
G35c 6MT DG/Willow/HyperGround/BorlaExhaust

 

Do we have any engineers here that could give us a good estimate as to what our cars engines, trans etc will handle?



There's a monster in my garage
G Monster

 

Start <a href="https://g35driver.com/forums/showflat.php?Cat=&Board=13&Number=86679&page=&view =&sb=&vc=1">here</a>. It's an old, but really neat program and has a whole lot of math behind it. A few flaws, but pretty close to reality and it's free (shareware). Just load the cars, or create new entries based on the specs. Then race em.

2003.5 Sedan Black/Black w/ sport, premium, aero, and winter packages.

 

There's more to acceleration than hp/weight ratios. But if you manage to get the G35 ratio similar to the M3, then yes, you should have comparable acceleration.

 

Also remember there is gearing, torque curves and differing redlines. The M3 gets us by going farther up in Revs before shifting. Aside from being lighter that is pretty much its only advantage in acceleration.

Better Life thru Chemistry
Black on Black 03.5 Sedan 6MT - Custom Catback

 

New ECU baby! 7100 RPM's woohoo.

G35S 6MT
K&N Typhoon intake
Technosquare ECU
350Z Springs & Struts (soon)
6-wire ground kit

 

Yeah, but don't forget that the M3 makes about 50 HP more at its peak.

 

I think the M is a little heavier too.



There's a monster in my garage
G Monster

 

hp = torque times rpm/5252. extrapolate that out and tell me what our peak hp would be with better air flow and fuel system to match.

let me tease a little. The Z makes 7 more hp than the G coupe because it's power band peaks at 6400 instead of the 6200 the G peaks at. Go on up to ~7900 near where the M3 peaks out???? at least 20 to 30 more hp. all we need is more air, more fuel and more revs to hit those hp. (although shortening the lifespan of the engine significantly)

Now, BMW's engine is likely mo betta built than ours but nothing some forged rods and better valve train can't make up IMHO.

Better Life thru Chemistry
Black on Black 03.5 Sedan 6MT - Custom Catback

 

That's all good and fine....but the fact remains that the M3 will rev higher than the G35c, and make more HP doing it.

Anyone can pipe dream about a (much) higher redline, better fuel system on the G35.... but is that reality? For the money spent to achieve another 1000 rpm on the VQ (and the extra power to put it on par with an M3) you could surely find a less expensive way to make another 50 HP.

 

The gear ratios play into affect a lot when comparing the M3 and the G35. True, the M3 can rev much higher, but the real benefit of doing so is being able to increase the torque at the wheels via shorter gearing. If you were to race an E46 M3, you would see that he is actually shifting at almost the same speed that you are in 1st, 2nd and 3rd gears. It is not only until 4th and 5th when he starts to shift at relatively higher speeds. In other words, his speed in 1st gear at 7900rpm is pretty much the same as your speed in 1st gear at 6500rpm. We all know the affect of shorter gearing on acceleration (just think of how much harder your car pulls in 1st versus 2nd gear). Well, his 1st - 3rd gears are about 20% shorter, yielding better acceleration. There are other factors which play into this such as traction limits and torque curves, but the M3 definitley has a heads up on us regarding rev limit/gear ratios.

 

I know most people look at bolting on more HP, but unbolting more weight first would seem a more appropriate first start. Better to fully use what you have then go from there. By lightening the load enough with more HP would we not have an advantage? Or is the VQ really a class lower in then the BMW engine, and that's are there is to it?



There's a monster in my garage
G Monster