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Given the way gas prices are going...

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What we need to start doing is having vehicles that don't use all cylinders while at highway speeds. So what you've got a v8, it can't take all 8 cylinders to actually keep your vehicle running during that 60mph flat land drive can it?

instead of 8, cut out all but 2 cylinders. Those 2 cylinders should be able to handle the load, or 4 if necessary. Then when you need full power or step on the throttle, boom, all cylinders start working again. it'd save a ton on gas.
 
Originally posted by: Paulson
instead of 8, cut out all but 2 cylinders. Those 2 cylinders should be able to handle the load, or 4 if necessary. Then when you need full power or step on the throttle, boom, all cylinders start working again. it'd save a ton on gas.

I *believe* this is an option on several GM vehicles right now. The Silverado/Sierra is the only one that comes to mind, but there may be others.

The biggest problem with this is getting the "restart" timed just right, when the vehicle needs all 8 cylinders again. One company (VW?) found this out the hard way, when some of the engines wouldn't fire back up the right way, and ended up twisting the frame of the vehicle 😛

Nate
 
Originally posted by: Paulson
What we need to start doing is having vehicles that don't use all cylinders while at highway speeds. So what you've got a v8, it can't take all 8 cylinders to actually keep your vehicle running during that 60mph flat land drive can it?

instead of 8, cut out all but 2 cylinders. Those 2 cylinders should be able to handle the load, or 4 if necessary. Then when you need full power or step on the throttle, boom, all cylinders start working again. it'd save a ton on gas.
That's already in production, but I can't think of the name GM uses for it. And I'm pretty sure they'll let no less than 4 be active at any given time.
 
Originally posted by: JLGatsby
No. Quit being so cheap. So you pay 5 or 10 bucks extra at the pump. Boo hoo.

Try $100/month.

If that's so easy for you, start sending me a check.
 
I'm all for saving the planet, so I like hybrids, but they don't come in manual. So due to that, I don't want one. A car is not an A to B tool, it needs to be more than that, for me anyways.
 
Originally posted by: Tommouse
I'm all for saving the planet, so I like hybrids, but they don't come in manual. So due to that, I don't want one. A car is not an A to B tool, it needs to be more than that, for me anyways.

The Honda Insight does/did come with a manual trans.
 
I kinda want to get a hybird just to avoid going to gas stations that frequently. Too bad I can't make my sedan shrink when I don't need to carry 3+ people around.
 
Originally posted by: NTB
Originally posted by: Paulson
instead of 8, cut out all but 2 cylinders. Those 2 cylinders should be able to handle the load, or 4 if necessary. Then when you need full power or step on the throttle, boom, all cylinders start working again. it'd save a ton on gas.

I *believe* this is an option on several GM vehicles right now. The Silverado/Sierra is the only one that comes to mind, but there may be others.

The biggest problem with this is getting the "restart" timed just right, when the vehicle needs all 8 cylinders again. One company (VW?) found this out the hard way, when some of the engines wouldn't fire back up the right way, and ended up twisting the frame of the vehicle 😛
Finally remembered the name of it, Variable Displacement. Doesn't look like reactivation is that big of a problem anymore:

1.Variable Displacement
?Tech
To improve gas mileage at highway speeds, certain engines can now deactivate half their cylinders?or just two. While the pistons continue to move inside the cylinders, fuel intake is shut off.
 
Originally posted by: Random Variable
Originally posted by: EyeMWing
Originally posted by: KillerCharlie
I'm pretty sure the money saved from using less gas didn't outweight the extra cost of a hybrid. Does anyone know at what fuel price the extra cost of a hybrid will make it worth buying?

I did the math in a thread many moons ago. And got flamed for it. But the Hybrid becomes worthwhile during a 4-year lifespan (assuming most people get a new car every 4 years) at about the $10 price point.

My previous car had a MSRP of over $30,000 and averaged about 17 MPG. The car I drive now had a MSRP of under $22,000 and averages between 50 and 60 MPG (59 MPG at the moment).

you can't compare a ford F150 to a toyota prius
 
Originally posted by: JS80
Originally posted by: Random Variable
Originally posted by: EyeMWing
Originally posted by: KillerCharlie
I'm pretty sure the money saved from using less gas didn't outweight the extra cost of a hybrid. Does anyone know at what fuel price the extra cost of a hybrid will make it worth buying?

I did the math in a thread many moons ago. And got flamed for it. But the Hybrid becomes worthwhile during a 4-year lifespan (assuming most people get a new car every 4 years) at about the $10 price point.

My previous car had a MSRP of over $30,000 and averaged about 17 MPG. The car I drive now had a MSRP of under $22,000 and averages between 50 and 60 MPG (59 MPG at the moment).

you can't compare a ford F150 to a toyota prius

Yeah, your comparison makes zero sense.
"My $300,000 vehicle gets 8mpg, and breaks down all of the time. The new Insight though, it cost less than 10% of that... and yet gets five times the milege! Plus, it breaks down less than half as often as my old car.Phh... who says hybrids don't make sense."

Though the Prius was the most cost effective hybrid out there, if I remember correctly. The Insight isn't bad either, but that thing is a piece of crap... I'd rather ride my bike- more room, and more padding.
 
Originally posted by: Paulson
What we need to start doing is having vehicles that don't use all cylinders while at highway speeds. So what you've got a v8, it can't take all 8 cylinders to actually keep your vehicle running during that 60mph flat land drive can it?

instead of 8, cut out all but 2 cylinders. Those 2 cylinders should be able to handle the load, or 4 if necessary. Then when you need full power or step on the throttle, boom, all cylinders start working again. it'd save a ton on gas.



Alot of GMs v8s are now shipping with that feature.
 
Originally posted by: JS80
Originally posted by: Random Variable
Originally posted by: EyeMWing
Originally posted by: KillerCharlie
I'm pretty sure the money saved from using less gas didn't outweight the extra cost of a hybrid. Does anyone know at what fuel price the extra cost of a hybrid will make it worth buying?

I did the math in a thread many moons ago. And got flamed for it. But the Hybrid becomes worthwhile during a 4-year lifespan (assuming most people get a new car every 4 years) at about the $10 price point.

My previous car had a MSRP of over $30,000 and averaged about 17 MPG. The car I drive now had a MSRP of under $22,000 and averages between 50 and 60 MPG (59 MPG at the moment).

you can't compare a ford F150 to a toyota prius

It wasn't a truck.
 
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