What are the hypermile "sleepers" - Page 20 - Fuelly Forums

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Old 03-14-2015, 11:41 AM   #191
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I dont think that would be any good. The engines that hybrids are mated to are not usualy especialy effecient to begin with, its only the hybrid system that helps them burn less fuel. Remove the electric motor and its just another regular car, slightly lighter but no more than a regular car of its size.
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Old 03-14-2015, 12:19 PM   #192
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You can't drive a Volt without the hybrid system. The Volt is pretty much an electric car with an on board generator to charge the batteries. The motor output is not physically connected to the wheels.

As there become more and more old hybrids around, there will be more companies building replacement packs, and with that competition, the prices will come down.
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Old 03-14-2015, 04:32 PM   #193
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You can't drive a Volt without the hybrid system. The Volt is pretty much an electric car with an on board generator to charge the batteries. The motor output is not physically connected to the wheels.
Did you forget? http://www.fuelly.com/forums/f18/bre...ine-12983.html

..surely you still can't drive it without the hybrid system though.
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Old 03-15-2015, 09:30 AM   #194
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I was trying to approach the sleeper in a different manner. I was thinking that if a person looks at the market at the older Chev Volts and the Toyota Prius (after they get close to 100k miles) they have no warranty and have a low price because the batteries are too expensive to replace. Can they be made to literally remove the extra weight of the hybrid system and use the basic car and use it as a hypermiller . the bad thing is the automatic transmission. Can this be a practical cheep try at it?
Used hybrids have been holding their value well. Honda is the exception in that they pushed the NiMH too far in their early Civic hybrids. Also with the first Insight, but that car has an all aluminum frame, low cd, and the first North American hybrid, so it may hold its value for other reasons.

Honda's with IMA could be driven without the batteries. Some of the first ones even have a manual transmission. They will just lose performance and become slower off the line and lose their top fuel efficiency limits. I don't see the point of doing so with the Civic, because you could just get a regular Civic, and get close to what is possible from the efficient hybrid engine. The original Insight be worthwhile to do because it is lightweight and has a very low air drag. It has a 0 to 60 in excess of 13secs with the battery to help though, but someone has stuck a turbo(from a Chevy Sprint IIRC) on its 3 cylinder.

The Toyota and Ford systems are intergrated with the transmissions. If you could remove the motors, you would be left with what is essentially a one speed manual. So any change to pure ICE would mean a new transmission. More Prii have been converted to pure EVs.

The Volt is pretty much like the Toyotas. Just getting a Cruze would likely be cheaper.

Battery prices have dropped since these cars came out, and if you have any skill with a multi-meter, finding the problem cells on a bad pack is no more difficult than hauling the 100lbs pack out of the car. One guy recently fixed a 'dead' pack in a Camry hybrid by just cleaning the bus bars.

The batteries will last the life of the car. Barring a defective part, expect them to last at least to 150k miles. There are plenty of Prii with 300k on the original pack. There also third parties already offering reconditioned packs, or to fix the one in the car for way less than what a dealer will charge to replace the pack. Which itself may be reconditioned.

The engines are efficient. In non-plugins, gasoline is still the sole source of energy. ICE cars have oversized engines to provide power for passing and hill climbing. Most of the time that engine is under light load, where it is less efficient, though. Hybrids, and to a lesser extent turbos, get better fuel economy by down sizing the ICE to a size which will be running efficiently for the majority of its time. Many go a little further by using a Atkinson cycle. It is more efficient than the Otto one, but produces less power.

The motors and battery provide power for the rarer times when it is needed for heavy acceleration and loads. The battery gets recharged when less power is needed to move the car than produced by the engine in its 'sweet' spot. Recapturing energy from braking is just icing on the cake.

In short hybrids hold their value too well for this to likely be worthwhile economically. Those where the money balance is better will most likely just end up with a slower version of the non-hybrid. In the others, just putting a smaller engine into a regular car will net the same results for less money.

Now, if you have the skills for the repair, finding a hybrid with a dead pack may be a deal.
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Old 03-15-2015, 08:23 PM   #195
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Hypermile sleepers...GM pushrod engines in general.

Ford Panthers.

If we are really seeking super-sleepers. Neither are hypermilers, but either one will do better than you'd expect.
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Old 03-15-2015, 08:58 PM   #196
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Any V8 Ford/Lincoln/Mercury sedan with fuel injection and an overdrive transmission. (Crown Vic, Grand Marquis, Town Car)
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Old 03-15-2015, 10:41 PM   #197
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Any V8 Ford/Lincoln/Mercury sedan with fuel injection and an overdrive transmission. (Crown Vic, Grand Marquis, Town Car)
So, basically, the Ford Panthers?

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Old 03-16-2015, 03:16 AM   #198
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Gas powered V8? You're not going to get 103 MPG in that like you would hypermiling a small diesel. Have we gone off topic again?
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Old 03-16-2015, 08:34 AM   #199
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Nope, OP asked for cars which are true sleepers, which one wouldn't think get decent mileage but do. So, we provide some!
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Old 03-16-2015, 10:27 AM   #200
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OK its just me then. Call me sceptical, but I would not immediately think of a V8 as being good on juice, unless it was a modern German diesel V8 perhaps!
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