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Sedans Toyota Camry 2010 Toyota Camry
569 messages, Last post on Nov 22, 2009 at 7:58 AM
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Replying to: seatoyotasales (Aug 02, 2008 8:19 pm) |
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Replying to: saidiadude (Aug 01, 2008 8:02 am) The newer 5 speed more likely uses the lockup clutch in 2 or even three of the higher gear ratios and with a 4 cylinder only the top gear is likley to be a true OD. Obviously the 4 cylinder cannot remain in OD and/or with the lockup clutch engaged as much as would a 6 cylinder with a 5 speed. Let's acknowledge that the 5 speed in the 6 cylinder will not likely be as "low" geared overall as would be the 4 cylinder. The bottom line is that with a 4 cylinder the top gear, OD, ratio in the 5 speed might very well be the same ratio as the top gear in the 4 speed. That would mean no real hwy FE advantage for the 5 speed. Not such a simple equation as one might at first think.
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Replying to: saidiadude (Aug 01, 2008 8:02 am) CVT's cannot yet handle "higher" levels of HP/Torque. |
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Replying to: wwest (Aug 03, 2008 10:02 am) > ratio in the 5 speed might very well be the same ratio as the > top gear in the 4 speed. That would mean no real hwy FE > advantage for the 5 speed. > > Not such a simple equation as one might at first think. Excellent points wwest. That's why I stated "all else being equal". Obviously there are many variables to consider. Also, the top gear does not necessarily have to be the same ratio in your 4spd vs 5spd example. In the example I mentioned (2 '98 Corollas), I believe that the final gears in the 2 transmissions have different ratios as the 3 speed revs a lot higher at 65mp than the 4 speed does. Point taken though. Back on topic: seatoyotasales thanks for the updates on the engine sizes. It's too bad that Toyota has chosen to go with the larger engine. MPG would have been a better choice for the consumer. I understand that Toyo has to compete with Honda, etc, but they should also balance the one upmanship with consumer needs. I rather see new technologies applied to the existing 4 cyl engine as it provides more than enough power for the average consumer. BTW, our family has owned several 4 cyl and 6 cyl Camrys (mostly 6 cyl) but this generation of Camrys (and very high gas prices) have convinced most of the family members that the 4 cyl is the better choice for our needs. For everyday use like commuting, it provides more Torque and HP than we need. MPG is the next major area of improvement for all automakers now. |
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Replying to: seatoyotasales (Aug 02, 2008 8:19 pm)
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Replying to: saidiadude (Aug 03, 2008 10:34 am) But. Improvments at the low RPM range almost always result in my HP/torque at higher RPM and vica versa. DFI being a good, current, example.
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Replying to: wwest (Aug 03, 2008 8:27 pm) |
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Replying to: 210delray (Aug 01, 2008 4:58 am) On the '05, I have complete records from new up to its current 32K miles. Worst believable is 20 mpg, best is 35 mpg. We've taken enough long-distance trips (including a 2400-mile round trip to Florida this past spring) to count on 32 mpg on the highway, using cruise and keeping to the speed limit. Also included in this trip was a 602-mile run on a single tank -- meeting your challenge -- where I refilled with 18.53 gallons, yielding (surprise!) 32+ mpg. " I remember both of those - it was from that latter post that I concluded that your unequalled range with low refill error constituted the upper actual limit of fuel efficiency for the automatic. Alls I wanted to say is that lots of gears do not necessarily translate into better efficiency - although it might sell more cars to those who chose to believe it.
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Replying to: phd86 (Aug 04, 2008 6:04 pm) Back to the future Camry, please.
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Replying to: wwest (Aug 03, 2008 8:27 pm) Spec: 2.5L I4 179hp/173 lb-ft torque Dual VVT-i also found in the 2009 Rav4
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