Is a Yaris Really That Slow?

[Stove]

Originally Posted by djct_watt

My point is that lack of torque (from a smaller engine) is exacerbated at higher speeds. So if the Yaris is trailing from 0-60, it will be trailing by EVEN MORE at higher speeds. A good example is a motorcycle. 0-60 in 3 seconds, 1/4 miles in 11 seconds or less. They'll keep up with any exotic sports car 0-60 or quarter mile. But pit them up at freeway speeds with a rolling start, and the supercar will win every time due to torque.

I guess I must have been dreaming then, or it wasn't a V6. I have no idea, since I wasn't behind him. You do the math.

[Yaris Hilton]

The supercar will beat the motorcycle at high speeds due to superior aerodynamics.

[djct_watt]

Originally Posted by Yaris Hilton

The supercar will beat the motorcycle at high speeds due to superior aerodynamics.

My gsxr would stay even with corvettes up to about 130, and then they'd pull on me. I know from experience. There was no shifting at that point so it was a pure physics race. I'm not talkin about racing integras, talkin 911 turbos, z06's, etc

[djct_watt]

Let's not get off topic... I know it's my fault it's getting there, but this my attempt to steer it back on track

[why?]

sure it is....


Older cars weighed less. A lot less in some cases. That is why they seemed more powerful.

my favorite older car is a 89 mazda 626 turbo. it had 130 hp and weighed 1800lbs. the thing flew.

get rid of a few hundred pounds of yaris and the car will get better.

however with safety standards, airbags(gag), and other crap, cars are forced to weigh a ton more and get worse gas mileage.

oh, btw, that civiv that got 50 mpg? its 0-60 was like 25 seconds.

[Tamago]

Originally Posted by RedRide

Yes the Yaris engine has more low end torque than the celica 1ZZ.
In fact the The celica 2zz in the GT-S has less low end torque than the 1ZZ

The 1zz is rev happy because most of its power in in the higher RPM range. as compared to the 1nz.

that's funny, because i compared my stock dyno graph 1zz (corolla) to my stock 1nz (xA) and imagine that, more torque from the 1.8 across the powerband....

so, since you're basing your "knowledge" on butt-dyno, i consider this conversation over.

[Tamago]

Originally Posted by djct_watt

My gsxr would stay even with corvettes up to about 130, and then they'd pull on me. I know from experience. There was no shifting at that point so it was a pure physics race. I'm not talkin about racing integras, talkin 911 turbos, z06's, etc

none of those are supercars ;)

[Tamago]

Originally Posted by why?

sure it is....


Older cars weighed less. A lot less in some cases. That is why they seemed more powerful.

my favorite older car is a 89 mazda 626 turbo. it had 130 hp and weighed 1800lbs. the thing flew.
.

where did you lose 900lbs?

http://autos.msn.com/research/vip/sp...=626&trimid=-1

[djct_watt]

Originally Posted by Tamago

none of those are supercars ;)

Yeah, you're right. But a Z06 does have supercar performance. It'll hold it's own amongst any exotic, and is faster than many. Don't get me wrong, I'm no raging country singing Chevy fanboy, but I respect it for what it is.

Most (real) supercar drivers do not drive very hard, simply for the fact that they have no need to prove themselves to others who are super slow. But yeah, cars like corvettes, 911's, M3/5/roadster/coupe, AMG's, usually like to play around on the road, well relative to the rest. But they're still nowhere near as bad as econocars.

[Yaris Hilton]

There's really no place for anybody to be using that kind of performance on public roads. Take it to the track.

[bronsin]

Originally Posted by Yaris Hilton

The supercar will beat the motorcycle at high speeds due to superior aerodynamics.

My ST1100 would do 125 NO PROBLEM. Although...you wouldnt want to have to TURN....

[Yaris Hilton]

Oh, I know there are sport motorbikes that will do 170+. But proportionately a lot more of their power is spent overcoming aerodynamic drag at high speeds than with a supercar. Or put another way, the Cd of a bike and rider is higher than the car's.

[djct_watt]

Originally Posted by Yaris Hilton

Oh, I know there are sport motorbikes that will do 170+. But proportionately a lot more of their power is spent overcoming aerodynamic drag at high speeds than with a supercar. Or put another way, the Cd of a bike and rider is higher than the car's.

Ding ding ding! We have a winner! Somebody here either actually knows what they are talking about here or is knowledgeable in physics. Motorcycles are great at quarter mile runs and absolutely OWN performance in the 0-130MPH or so range. 130+ and they lack the torque to overcome drag. Notice that if you have a power limited top speed, you will always top out at your torque curve's peak, and not your HP peak in your powerband. However, acceleration is greatest at the HP peak.

Acceleration is created by torque applied over time, or in other words, power. Gearing is what turns that time applied energy into instantaneous torque, which is why torque does not always determine fastest acceleration. Top speed (power limited) is determined by the maximum instantaneous torque that be created vs aero drag. And yes, most bikes, like the ST1100 will EASILY EASILY EASILY do 125. And yes, that kind of power at those kinds of speeds, and racing in generally SHOULD ALWAYS be kept off the streets. We were all young and stupid once, but we learn better from out mistakes. I do not advocate street racing in anyway. Not to excuse it, but I-5 from LA to SF (400 miles) and a sore rear end on a very uncomfortable sport bike = myself turning temporarily insane and wanting to get there quickly, although in the end, I had to stop for gas 4 times which actually slowed me down. And I'm pushing this off topic again. SORRY!!!!!!!!

Back to the topic, for what it is, the Yaris has more than enough power. It's good the way it is. The only thing that would be nice is a 6th gear on the tranny for a higher overdrive ratio. If automatic, then yeah, another 15-20 HP would be great. . . although not necessary. When the 1NZ gets redone, which it is overdue for, it should see a power bump. Hopefully they bring the direct injection technology to the line. It would boost power and fuel efficiency.

[Thai_Dang]

I feel slow on the highway, feels like it takes more pedal travel to maintain speed/accelerate, so that 85 mph seems pretty fast compared to just ho hum in a 2009 camry. Lol but it has more than enough power to get a speeding ticket, just got to get used to coming from 160-200 hp engines. I remember driving a powerful ass suv, and didn't even notice that I got up to 95 mph.

[yaris2010RS]

ha, i raced a prelude on the 427 tonight, we started off doing about 50km/h past an accident and punched it, around traffic getting up too a max 160km/h (before we went our seperate ways) i had overtaken him (i was very impressed considering he took off first and my passanger and i are not the lightest ppl)