SMG Tranny question... - Page 6

dilla · #51 (**permalink**) 08-10-2008, 03:04 PM

Quote:

Originally Posted by Duke

Depends on the system. Some AWD's will put the power down no problem, spin all 4 wheels and rocket off (Impreza's, Evo's, Skylines and such. Actually, Japanese are good at this shit

). Some other AWD types tend to "bog down" from the line with an agressive launch. Famous case-in-point being the Audi R8, which is kinda weird since their quick versions (S and more notably RS) do not suffer from the same problem. The Quattro system has been prime material for years now, but for some reason in the R8 it doesn't like hard launches.

European car makers in particular don't make AWD systems that are good at hammering a car away from the lights. BMW, Merc, even Porsche. Probably because Europeans make expensive cars driven by all kinds of people (you won't find blonde housewives driving EVO Sti's...), the AWD systems they use are geared very much towards stability, safety, security.

Whereas the Japs put it in "to go faster", hehe.

Hmm. Then why are Porsches and R8s so fast despite the AWD? They still pull in 4 second 0-60s and in about roughly the same time as the EVOs and STis

Duke · #52 (**permalink**) 08-16-2008, 11:38 AM

Quote:

Originally Posted by dilla

Hmm. Then why are Porsches and R8s so fast despite the AWD? They still pull in 4 second 0-60s and in about roughly the same time as the EVOs and STis

Because they have dirty more power? Evo's and Subi's are nudging 300 horsies, R8 has 420.

dilla · #53 (**permalink**) 08-18-2008, 09:06 PM

Quote:

Originally Posted by Duke

Because they have dirty more power? Evo's and Subi's are nudging 300 horsies, R8 has 420.

535 is 300 hp/ 300lb.

Duke · #54 (**permalink**) 08-23-2008, 10:54 AM

Quote:

Originally Posted by dilla

535 is 300 hp/ 300lb.

What does the 3.0 TT have to do with this?

dilla · #55 (**permalink**) 08-24-2008, 01:08 AM

Quote:

Originally Posted by Duke

What does the 3.0 TT have to do with this?

Um, it's packing the same power as the Subaru and the Evo and has the same drivetrain (AWD) as the two which get the same times or faster than the cars you mentioned. EVO's what, 4.6? The Imp the same? 4.3? The 3.0 TT uses Mitsu turbines, so..... can't be too different. For a car with the weight of the 5er, it's tearing it up.

Duke · #56 (**permalink**) 09-01-2008, 01:29 PM

An AWD 5-series is heavy compared to Japanese rally cannons. I don't think you'll get much lower than 6 second 0-60 times in real life.

And yeah,the drivetrain principle is the same. But AWD systems are pretty complex and the character of the systems in the Evo and Impreza are wholly different than that of BMW's XI system, which is made for Americans :p (There are very few X driven BMW's (save those stupid X3's, X6's and X5's) here in Europe. At least I never see one). So it's not "the same system", far from it.

Stock Evo's and Impreza's will realistically put down 5 (or a wee bit less) in ideal conditions. No way it'll touch 4.3 or sub 4.5 That's Ferrari territory.

dilla · #57 (**permalink**) 09-05-2008, 10:35 AM

Quote:

Originally Posted by Duke

An AWD 5-series is heavy compared to Japanese rally cannons. I don't think you'll get much lower than 6 second 0-60 times in real life.

And yeah,the drivetrain principle is the same. But AWD systems are pretty complex and the character of the systems in the Evo and Impreza are wholly different than that of BMW's XI system, which is made for Americans :p (There are very few X driven BMW's (save those stupid X3's, X6's and X5's) here in Europe. At least I never see one). So it's not "the same system", far from it.

Stock Evo's and Impreza's will realistically put down 5 (or a wee bit less) in ideal conditions. No way it'll touch 4.3 or sub 4.5 That's Ferrari territory.

I've had the onboard timer measure me at 5.6. I think an ECU remapping can get it to 5.1 with a cold-air along with a Sprintbooster.

Duke · #58 (**permalink**) 09-07-2008, 08:51 AM

5.6 is pretty quick for such a heavy car. In ideal conditions, maybe, but otherwise I wouldn't trust BMW's own timing devices that much. They have a tendency to overstate (not by a lot, but still).

The engine is great, though, no doubt about it, but the AWD kinda ruins the fun of the car. The X model rides higher and has no sport suspension. The equivalent RWD car is probably more fun and quicker as well. Although probably a bit more susceptible to poor weather conditions.

dilla · #59 (**permalink**) 09-08-2008, 01:49 AM

Quote:

Originally Posted by Duke

5.6 is pretty quick for such a heavy car. In ideal conditions, maybe, but otherwise I wouldn't trust BMW's own timing devices that much. They have a tendency to overstate (not by a lot, but still).

The engine is great, though, no doubt about it, but the AWD kinda ruins the fun of the car. The X model rides higher and has no sport suspension. The equivalent RWD car is probably more fun and quicker as well. Although probably a bit more susceptible to poor weather conditions.

It was on a mini-higway, no better way of explaining what the hell it is, and about 80 degrees or so. From a standstill in sport mode it did that.

And from what I've heard, BMW is actually quite conservative with their times, as they say the 550i does it in 5.1 or so, but many auto magazines get it in the upper 4's.

C.R.Y. · #60 (**permalink**) 09-09-2008, 09:17 PM

5.6 idk, but something like 5.8-6.0 with a good launch is definitely believable. the TT inline 6 is a little underrated. in the 3 series they put out 270rwhp/270rwtq stock.