New at this, trying to understand horse power
I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6
cylinder that delivers 280 hp and about the same mileage as my jeep. How is the Infinity getting so much more HP and the same gas mileage with smaller displacement? We're talking 40% more HP. Is it better Technology or Engineering or both? Or is Infinity less than truthful about thier HP rating? Thanks |
Re: New at this, trying to understand horse power
Wow! Now there's a good question! Talk about opening a can of worms.
There is so much going on in a motor that is design adjustable that it cannot be explained too easily in one post. As far as motor design, Straight six, V6, cam degrees, stroke, piston number, piston size, timing, aspiration, fuel delivery system, etc. etc., all can be altered for vastly different results. Gearing is also a factor in gas mileage. The two motors you are comparing are apples to oranges as far as design and each is designed for a niche purpose. Where the Jeep is designed for more low end torque, the Nissan is designed for smoothness and more HP through a higher RPM range. It all comes down to a small explosion in each cylinder and how the surrounding metal is moved by that explosion. I suggest searching and reading up a bit, then come back with some more specific questions or you may max out the Usenet with opinions and flame wars. :) Brian Foster wrote: > I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 > cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > > Or is Infinity less than truthful about thier HP rating? > > Thanks -- __________________________________________________ _________ tw 71 Bill Stroppe Baja Bronco 03 TJ Rubicon - Rubicon Express 4.5" 01 XJ Sport There is a very fine line between "hobby" and "mental illness." -- Dave Barry Pronunciation: 'jEp Function: noun Date: 1940 Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase') A small general-purpose motor vehicle with 80-inch wheelbase, 1/4-ton capacity, and four-wheel drive used by the U.S. army in World War II. (Please remove the OBVIOUS to reply by email) __________________________________________________ _________ |
Re: New at this, trying to understand horse power
Wow! Now there's a good question! Talk about opening a can of worms.
There is so much going on in a motor that is design adjustable that it cannot be explained too easily in one post. As far as motor design, Straight six, V6, cam degrees, stroke, piston number, piston size, timing, aspiration, fuel delivery system, etc. etc., all can be altered for vastly different results. Gearing is also a factor in gas mileage. The two motors you are comparing are apples to oranges as far as design and each is designed for a niche purpose. Where the Jeep is designed for more low end torque, the Nissan is designed for smoothness and more HP through a higher RPM range. It all comes down to a small explosion in each cylinder and how the surrounding metal is moved by that explosion. I suggest searching and reading up a bit, then come back with some more specific questions or you may max out the Usenet with opinions and flame wars. :) Brian Foster wrote: > I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 > cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > > Or is Infinity less than truthful about thier HP rating? > > Thanks -- __________________________________________________ _________ tw 71 Bill Stroppe Baja Bronco 03 TJ Rubicon - Rubicon Express 4.5" 01 XJ Sport There is a very fine line between "hobby" and "mental illness." -- Dave Barry Pronunciation: 'jEp Function: noun Date: 1940 Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase') A small general-purpose motor vehicle with 80-inch wheelbase, 1/4-ton capacity, and four-wheel drive used by the U.S. army in World War II. (Please remove the OBVIOUS to reply by email) __________________________________________________ _________ |
Re: New at this, trying to understand horse power
Wow! Now there's a good question! Talk about opening a can of worms.
There is so much going on in a motor that is design adjustable that it cannot be explained too easily in one post. As far as motor design, Straight six, V6, cam degrees, stroke, piston number, piston size, timing, aspiration, fuel delivery system, etc. etc., all can be altered for vastly different results. Gearing is also a factor in gas mileage. The two motors you are comparing are apples to oranges as far as design and each is designed for a niche purpose. Where the Jeep is designed for more low end torque, the Nissan is designed for smoothness and more HP through a higher RPM range. It all comes down to a small explosion in each cylinder and how the surrounding metal is moved by that explosion. I suggest searching and reading up a bit, then come back with some more specific questions or you may max out the Usenet with opinions and flame wars. :) Brian Foster wrote: > I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 > cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > > Or is Infinity less than truthful about thier HP rating? > > Thanks -- __________________________________________________ _________ tw 71 Bill Stroppe Baja Bronco 03 TJ Rubicon - Rubicon Express 4.5" 01 XJ Sport There is a very fine line between "hobby" and "mental illness." -- Dave Barry Pronunciation: 'jEp Function: noun Date: 1940 Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase') A small general-purpose motor vehicle with 80-inch wheelbase, 1/4-ton capacity, and four-wheel drive used by the U.S. army in World War II. (Please remove the OBVIOUS to reply by email) __________________________________________________ _________ |
Re: New at this, trying to understand horse power
"Brian Foster" <brianfoster@houston.rr.com> wrote in message news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > Both. The GC uses an ancient design that has been reconfigured numerous times over 50+ years but does not benefit from overhead cams, 4 valve/cyl etc. There is a lot more resistance inside the 4.0 than the 3.5. It's unfair to compare 21st century technology with an engine designed in the early to mid 1900's. You can not bring fuel consumption into the arguement because now we are comparing the GC to the FX... a brick to a bullet. There is added weight and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel consumption would probably be almost comparable. -Brian |
Re: New at this, trying to understand horse power
"Brian Foster" <brianfoster@houston.rr.com> wrote in message news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > Both. The GC uses an ancient design that has been reconfigured numerous times over 50+ years but does not benefit from overhead cams, 4 valve/cyl etc. There is a lot more resistance inside the 4.0 than the 3.5. It's unfair to compare 21st century technology with an engine designed in the early to mid 1900's. You can not bring fuel consumption into the arguement because now we are comparing the GC to the FX... a brick to a bullet. There is added weight and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel consumption would probably be almost comparable. -Brian |
Re: New at this, trying to understand horse power
"Brian Foster" <brianfoster@houston.rr.com> wrote in message news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >cylinder that delivers 280 hp and about the same mileage as my jeep. > > How is the Infinity getting so much more HP and the same gas mileage with > smaller displacement? > > We're talking 40% more HP. > > Is it better Technology or Engineering or both? > Both. The GC uses an ancient design that has been reconfigured numerous times over 50+ years but does not benefit from overhead cams, 4 valve/cyl etc. There is a lot more resistance inside the 4.0 than the 3.5. It's unfair to compare 21st century technology with an engine designed in the early to mid 1900's. You can not bring fuel consumption into the arguement because now we are comparing the GC to the FX... a brick to a bullet. There is added weight and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel consumption would probably be almost comparable. -Brian |
Re: New at this, trying to understand horse power
From Infinity websight. FX35 with 2wd is 4,110 lbs
from my GC ownersmanual 2wd 4.0liter weight is 3791 lbs The Infinity is 319 lbs heavier and has a smaller engine and gets same gas milage with 80 more HP. "Cherokee-Ltd" <nospam@home.com> wrote in message news:T4mdnWRS1OLwtEXcRVn-gA@rogers.com... > > "Brian Foster" <brianfoster@houston.rr.com> wrote in message > news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >>I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >>cylinder that delivers 280 hp and about the same mileage as my jeep. >> >> How is the Infinity getting so much more HP and the same gas mileage with >> smaller displacement? >> >> We're talking 40% more HP. >> >> Is it better Technology or Engineering or both? >> > > > Both. The GC uses an ancient design that has been reconfigured numerous > times over 50+ years but does not benefit from overhead cams, 4 valve/cyl > etc. There is a lot more resistance inside the 4.0 than the 3.5. It's > unfair to compare 21st century technology with an engine designed in the > early to mid 1900's. > You can not bring fuel consumption into the arguement because now we are > comparing the GC to the FX... a brick to a bullet. There is added weight > and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel > consumption would probably be almost comparable. > > -Brian > |
Re: New at this, trying to understand horse power
From Infinity websight. FX35 with 2wd is 4,110 lbs
from my GC ownersmanual 2wd 4.0liter weight is 3791 lbs The Infinity is 319 lbs heavier and has a smaller engine and gets same gas milage with 80 more HP. "Cherokee-Ltd" <nospam@home.com> wrote in message news:T4mdnWRS1OLwtEXcRVn-gA@rogers.com... > > "Brian Foster" <brianfoster@houston.rr.com> wrote in message > news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >>I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >>cylinder that delivers 280 hp and about the same mileage as my jeep. >> >> How is the Infinity getting so much more HP and the same gas mileage with >> smaller displacement? >> >> We're talking 40% more HP. >> >> Is it better Technology or Engineering or both? >> > > > Both. The GC uses an ancient design that has been reconfigured numerous > times over 50+ years but does not benefit from overhead cams, 4 valve/cyl > etc. There is a lot more resistance inside the 4.0 than the 3.5. It's > unfair to compare 21st century technology with an engine designed in the > early to mid 1900's. > You can not bring fuel consumption into the arguement because now we are > comparing the GC to the FX... a brick to a bullet. There is added weight > and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel > consumption would probably be almost comparable. > > -Brian > |
Re: New at this, trying to understand horse power
From Infinity websight. FX35 with 2wd is 4,110 lbs
from my GC ownersmanual 2wd 4.0liter weight is 3791 lbs The Infinity is 319 lbs heavier and has a smaller engine and gets same gas milage with 80 more HP. "Cherokee-Ltd" <nospam@home.com> wrote in message news:T4mdnWRS1OLwtEXcRVn-gA@rogers.com... > > "Brian Foster" <brianfoster@houston.rr.com> wrote in message > news:V5VBd.43168$yv2.40568@fe2.texas.rr.com... >>I have a 4.0 liter 6 cylinder in my GC. The Infinity FX35 has 3.5 liter 6 >>cylinder that delivers 280 hp and about the same mileage as my jeep. >> >> How is the Infinity getting so much more HP and the same gas mileage with >> smaller displacement? >> >> We're talking 40% more HP. >> >> Is it better Technology or Engineering or both? >> > > > Both. The GC uses an ancient design that has been reconfigured numerous > times over 50+ years but does not benefit from overhead cams, 4 valve/cyl > etc. There is a lot more resistance inside the 4.0 than the 3.5. It's > unfair to compare 21st century technology with an engine designed in the > early to mid 1900's. > You can not bring fuel consumption into the arguement because now we are > comparing the GC to the FX... a brick to a bullet. There is added weight > and rolling resistance in the GC... if you had the 3.5 in the GC, the fuel > consumption would probably be almost comparable. > > -Brian > |
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