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#14656 of 14778 Re: '06 Avalon- O2 sensors and intake manifold replacement for $1,800 [Modad55] by wwest Jan 11, 2009 (10:52 am)
Replying to: Modad55 (Jan 10, 2009 11:41 am) Emissions control warranties extend FAR beyond the normal factory warranty.
#14657 of 14778 Re: '06 Avalon- O2 sensors and intake manifold replacement for $1,800 [fin] by Modad55 Jan 11, 2009 (4:30 pm)
Replying to: fin (Jan 10, 2009 1:25 pm) Thanks for the input. I'll post my progress.
#14658 of 14778 Re: So the formula we use to work out the top speed? [fin] by amauhry Jan 13, 2009 (3:05 pm)
Replying to: fin (Dec 24, 2008 5:12 pm) fin,   Ok, aerodynamic is a big factor in many designs. Coefficient of drag for most family cars we see on the street doesn’t differentiate to the point to account for significant difference in vehicle speed.   Here’s this question: which will accelerate faster from rest, a two-cylinder motorcycle (standard specs; no fancy bike) or a Caterpillar truck generating, say, 2000 ft-lbf of torque?   …and for the sake of this argument, the bike will leave the Caterpillar in the dust too.   Do you all think it is only the drag factor that will give the edge to the bike? If so, think again.   Amaury '08 Limited Replies to this message: necro1234 (Jan 13, 2009 5:35 pm) fin (Jan 13, 2009 9:13 pm) amauhry (Jan 14, 2009 7:29 am)
#14659 of 14778 Re: So the formula we use to work out the top speed? [amauhry] by necro1234 Jan 13, 2009 (5:35 pm)
Replying to: amauhry (Jan 13, 2009 3:05 pm) I personally would think it would be the power to weight ratio that would count the most. The bike that may push out far lower torque and bhp also has hardly any weight to deal with, which of course is a different story with the caterpillar.   Least thats my thought on it   Cheers   Sheldon
#14660 of 14778 Re: So the formula we use to work out the top speed? [amauhry] by fin Jan 13, 2009 (9:13 pm)
Replying to: amauhry (Jan 13, 2009 3:05 pm) Don't confuse the rate of acceleration of a vehicle, such as an Avalon, with the theoretical top speed calculations for the vehicle. These are two different things, figured different ways.   As an object (bike, Avalon, truck, etc.) accelerates, the weight of the object becomes less important and the aerodynamic shape, if you have air as a factor, becomes more important, all else remaining constant.   You have the concept essentially correct, as does the post after yours. It can be confusing at times... but it's really just basic physics. Toyota engineers know what a vehicle will do before it is ever built and tested on a track just like Boeing knows what a plane will do without ever flying it. It's the things you missed that make engineering exciting.... Replies to this message: amauhry (Jan 14, 2009 7:29 am)
#14661 of 14778 Re: So the formula we use to work out the top speed? [fin] by amauhry Jan 14, 2009 (7:29 am)
Replying to: fin (Jan 13, 2009 9:13 pm) fin,   There is a factor in design between the motorcycle and the Caterpillar that explicitly tells you why the Caterpillar, with its massive engine generating about 2,000 ft-lbf of torque and ~ 600 hp, has a top speed of just about 50 mph whereas the bike, with its tiny engine producing just a fraction of the truck’s energy and power output, has an equal or greater top speed.   Better yet, explain why the Space Shuttle Crawler Transporter (the flatbed that transports the shuttle from its hangar to the launch pad) generating way over 5,000 hp has a top speed of less than 1 mph (at this speed aerodynamic drag is insignificant). I can assure you that my Avy, just like the bike, generating a meager 268 hp, will leave the Crawler in the dust too in no time.   The modern-day Somalia pirates are taking full advantage of this difference in design by simply using common sense. Their tiny vessels are capable of intercepting and outrunning the huge ships out in the Indian Ocean.   Yes, as you said it, it’s all about physics, Newtonian physics to be precise. But you still keep missing the answer.   Amaury '08 Limited
#14662 of 14778 Re: '06 Avalon- O2 sensors and intake manifold replacement for $1,800 [Modad55] by ange Jan 23, 2009 (7:07 am)
Replying to: Modad55 (Jan 10, 2009 11:41 am) I have a 2005 and they replaced the intake manifolds to try to minimize the hesitation in the transmission shifting at slow speeds. It helped but did not resolve the problem. The manifolds should be covered by Toyota. Ask what do the manifolds have to do with check engine light? I think you are entitled to free manifolds costs. Good Luck
#14663 of 14778 Potential New to me Owner for Taxi use by theroyalmike Jan 26, 2009 (10:44 pm)
Hi Considering buying a couple of Avalon’s for a Taxi service and have some questions. Any opinions on using Avalon as a Taxi Trying to piece together service recommendations for Avalon any one have a copy of Toyota recommendations. Do they have factory running lights as standard as I am in Canada but will probably buy from the USA What grade fuel are you running is it happy enough on regular or do you need premium What should I look out for when buying used specific to Avalon. Thanks in advance Replies to this message: pcc49 (Jan 26, 2009 11:29 pm) jlsexton (Jan 27, 2009 11:51 am)
#14664 of 14778 Re: Potential New to me Owner for Taxi use [theroyalmike] by pcc49 Jan 26, 2009 (11:29 pm)
Replying to: theroyalmike (Jan 26, 2009 10:44 pm) Hi Mike:   I own a 2006 Avalon Limited and have nothing but praise for the car! It is powerful, roomy and runs on regular! Yes, the owner's manual even says it runs on regular.I think this car will be perfect for a taxi. I have over 100K miles now. I have changed tires once and front brake only. It is quiet and drives very smooth and "effortless"!
#14665 of 14778 Re: Potential New to me Owner for Taxi use [theroyalmike] by jlsexton Jan 27, 2009 (11:51 am)
Replying to: theroyalmike (Jan 26, 2009 10:44 pm) I personally had only one problem of concern, it was with the Limited Smart Key, the vehicle refused to start, acted like it was running, ground the starter. Towed to Toyota, they found nothing, has acted up once after that, disconnected the battery overnight, been good since then, that was September. Large back seat, not a large trunk for a car this size, probably because of the back seat. Found it runs best on Mobil regular, terribly on Sunoco. Mobil I get 22 around town, was up to 34 coming back from my niece's on that long trip. Sunoco I went down to 15-16 around town, only purchased it once. Some off brands were good, doubt if you have them, Quik-Chek, Stewart's Shops also gave good mileage. Good luck, please keep your cold weather up there, I'm tired of clearing my driveway.

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