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  #31  
Old 03-10-2012, 09:26 AM
huntergreen huntergreen is offline
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Originally Posted by snrusnak View Post
Many older guys have the saying "there is no replacement for displacement". That's not true though, there are actually three main replacements; turbocharger, supercharger, and nitrous.
i would be one of those older guys. lol. some of you may not remember the early mustang and thunderbird 4 cyl turbo's, they moved pretty well, can't speak to their longevity though. i would think, a turbo and the other add ons would produce more hp on a larger displacement engine than a six or a four cyl. the problem i have with the ecoboost, is not only their currrent problems, is that ford added diesel technology to the ecoboost, di and dual turbos. they couldn't get it to work on the navistar engines, which ford had a hand in designing, why would anyone think they can build and design a gas engine with this tech. i do understand though, smaller displacement and more power is the future.
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  #32  
Old 03-10-2012, 03:46 PM
wbowyer wbowyer is offline
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Well, the navistar motors had more fuel related issues than turbo related ones. GM's duramax motors are pretty bad about blowing turbos when they are under a load. Ford's 6.4 motor is actually a beastly motor once you add a spartan phalanx tuner, egr and dpf delete, and the proper fueling support (FASS fuel pump and potentially some injectors). I have a friend who has a 6.4 with the above mods, a 5" straight pipe to 7" stacks, 8" lift on 38x1350x24 kumho m/t's and he put down a 12.82 at the strip.

You are correct though that a higher displacement motor with forced injection will produce more power simply because you can cram MORE air and MORE fuel in the cylinder to result in a MORE powerful explosion. The question is whether that explosion will be efficient enough to add economy as well as power.
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  #33  
Old 03-10-2012, 07:02 PM
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Yes in this day and time there is still no replacement for Cubic Inches, especially with Superchargers and Nitros installed with those cubic inches. Wait until mine is done. Screw and Ecoboost or Junkerado!


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  #34  
Old 03-12-2012, 08:30 AM
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All this is true, but boost does replace displacement. I said that a small displacement boosted engine is equal to a large displacement engine, not equal to a large displacement boosted engine.
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  #35  
Old 03-12-2012, 10:42 AM
huntergreen huntergreen is offline
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Originally Posted by wbowyer View Post
Well, the navistar motors had more fuel related issues than turbo related ones. GM's duramax motors are pretty bad about blowing turbos when they are under a load. Ford's 6.4 motor is actually a beastly motor once you add a spartan phalanx tuner, egr and dpf delete, and the proper fueling support (FASS fuel pump and potentially some injectors). I have a friend who has a 6.4 with the above mods, a 5" straight pipe to 7" stacks, 8" lift on 38x1350x24 kumho m/t's and he put down a 12.82 at the strip.

You are correct though that a higher displacement motor with forced injection will produce more power simply because you can cram MORE air and MORE fuel in the cylinder to result in a MORE powerful explosion. The question is whether that explosion will be efficient enough to add economy as well as power.
i thought i read that the fuel delivery system, injectors and turbos were all change from what navistar had originally designed.
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  #36  
Old 03-12-2012, 10:47 AM
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let me also add, the ecoboost may get slightly better mpg than the hemi, but dollar per dollar,"purchase price between the two" dodge is the better buy. how long would one have to own the ecoboost to make up the difference in mpg to equalize the savings by purchasing the ram over the ford? for the record ther would have thousands between the purchase of my dodge and the ford.
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  #37  
Old 03-12-2012, 10:51 AM
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^and my neighbor bought a $30k prius to "save money".
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  #38  
Old 03-12-2012, 10:59 AM
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Originally Posted by snrusnak View Post
^and my neighbor bought a $30k prius to "save money".
i don't know much about the prius, but how much can you save if you have to replace the batteries. i would think a chevy cruz rated at 40 mpg hwy would be the better choice, unless he bought this in addition to a whatever he drives to save dollars. then "LOL"
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  #39  
Old 03-12-2012, 11:01 AM
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yeah I showed him how it would take ~15-20 years for the "savings" to break even (just with fuel) as compared to many other small 4 cyl cars and he quickly changed his story to "well....I bought it because it's better for the environment".

Wasn't trying to be a jerk to him but just trying to get people to think...

Heck my wife's aveo only cost us $6k out the door and it gets 36 hwy and just under 30 city. It's a great little car too in great shape. I doubt we will spend $24k in fuel over the next few years with that car. Also like you said, maintenance, battery cost, etc.
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Last edited by snrusnak; 03-12-2012 at 11:04 AM.
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  #40  
Old 03-12-2012, 11:04 AM
huntergreen huntergreen is offline
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Quote:
Originally Posted by snrusnak View Post
All this is true, but boost does replace displacement. I said that a small displacement boosted engine is equal to a large displacement engine, not equal to a large displacement boosted engine.
without checking, i thought you also mentioned, "no replacement.......". i was trying to show you can always get more out of larger displacement.
if i was going to add aftermarket turbos ect to my hemi, don't think i would really be thinking about mpgs lol.
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