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IIRC torque helps handling, and since i have a honda i dont have that much torque and i dont like it,so i went with torque.


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You guys are too technical wink


Nick
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Quote:
Originally posted by Dan Nixon:
I would like the best "area under the curve" in the relevent rev range, HP or tourque - no difference.

Another way to phrase your question is: do you prefer tourque that peaks early & falls off (yielding lower peak power but improved off the line & low RPM driveability) OR a flat tourque curve with a lower "plateau" (more than peak) but that is maintained higher into the rev range (yielding higher peak power)? The latter gives the feeling of "revabilty" which I like so that is my pick..Also, I think it is more appropriate to FWD cars which suffer from torque steer with too much torque (which corrupts steering feel) and difficulty getting big low RPM torque effectively to the pavement. RWD/AWD much better for big tourque. A minimum of low RPM tourque is nice for around town improved driveabilty/avoid excessive shifting in town - a problem with many small 4-bangers of a certain brand..
What brand would that be...the zetec seems to be excellent in that respect. I drove a 96 Jetta w/4 and it was terrible had no power (or more correctly torque, I guess) until it was time to shift.


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Quote:
Originally posted by Saturn_k1:
You guys are too technical wink
haha, quality.


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I realize this is hypothetical, but is that a tradeoff that happens in the real world? Does tuning an engine for high-rpm horsepower actually take away low-end torque (or take away enough low-end torque to matter?). I don't think it does, unless the engine is REALLY small and doesn't deliver much torque to begin with; if that's the case, I'll pass on both of them!

Brian

Quote:
Originally posted by svtcarboy:
I think same displacement was assumed in the question. Basically it was "if all other things are equal, which would you take?"

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The 2.3L Saab Viggen engine is a small displacement with nearlt 260 lf./ft. of torque & 230 h.p. Not a bad split.

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Large diesels have lots of torque. A typical Mack engine is 237 HP, 1200 FT./LBs of Torque @ 2100 RPM (673 CID)

Put a 60000 lb. weight on a 3L CSVT and on a Mack Truck. Guess who is moving first.

When I was driving, a gas engine tractor (about 300 HP, 400 TQ (428 CID) with no trailer (Bobtail) will out accelerate a Diesel Engine tractor (237 HP, 1200 Tq). Higher top speed too. Hitch up and load up and the gas engine is left far behind (Especially on grades).
So, say, a Contour with 200HP, 300Tq. would be beat by a 300HP , 200TQ Contour with only a driver.

Load the trunk with Audio, put 4 adults (in the seats, not the trunk)in and suddenly the 200HP, 300 Tq Contour feels a lot nicer.

Pick your poison...

Most days, I want the Tq.

Got a load, need torque.


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Torque and a couple extra gears.


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I didn't see it posted here, but here it is:

HP = torque * RPM/5252

So a big engine that has lots of torque, can make horsepower without a lot of revs.

So if you have a nice flat torque curve, you will have more and more horsepower as the RPMs climb.

This has probably been posted before, but it does some of the math on this whole torque/horsepower game. http://www.vettenet.org/torquehp.html

Around town, I like my 87 LeSabre, because it can get off the line easily, but falls flat at speed. The SVT pulls so darn hard to the redline, but is so easy to bog starting out. Provides enough displacement for respectible low end torque (for 2.5L) but is really fun from 3.5K to 7K laugh

TB


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I want my power curves; just moved up 150 each respectively...

Is that too much to ask... laugh

So I guess I prefer steady curves vs a high peak of either...


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