|
TJ engine swap - 4.0 to something with better MPG?
I have a 97 TJ 4.0/manual thats been great on road and off - the only
consistent problem I have with the Jeep is the MPGs, way less than advertised, I'm averaging 12-14 in city and about 16 on freeway. I've checked everything out possible, and even taken it to the stealer; either I have a very heavy foot or I just have a thirsty jeep. I'm basically annoyed by the gas mileage, so my question is- can I swap in an engine (or engine/tranny combo) that will give me at least the same performance (torque, power) and also has mpg in the 19-24 mpg range? Sure its a lot to ask, but if its possible I'd like to do it and figure it would be a fun project. thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Try a 3-banger from a Geo...
-jeff |
Re: TJ engine swap - 4.0 to something with better MPG?
Try a 3-banger from a Geo...
-jeff |
Re: TJ engine swap - 4.0 to something with better MPG?
Try a 3-banger from a Geo...
-jeff |
Re: TJ engine swap - 4.0 to something with better MPG?
Try a 3-banger from a Geo...
-jeff |
Re: TJ engine swap - 4.0 to something with better MPG?
How could you possibly justify the cost of an engine swap for that mpg
difference? Your TJ gets pretty normal mpg for a TJ, IMO. munchiechee wrote: > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. -- __________________________________________________ _________ tw 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: TJ engine swap - 4.0 to something with better MPG?
How could you possibly justify the cost of an engine swap for that mpg
difference? Your TJ gets pretty normal mpg for a TJ, IMO. munchiechee wrote: > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. -- __________________________________________________ _________ tw 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: TJ engine swap - 4.0 to something with better MPG?
How could you possibly justify the cost of an engine swap for that mpg
difference? Your TJ gets pretty normal mpg for a TJ, IMO. munchiechee wrote: > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. -- __________________________________________________ _________ tw 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: TJ engine swap - 4.0 to something with better MPG?
How could you possibly justify the cost of an engine swap for that mpg
difference? Your TJ gets pretty normal mpg for a TJ, IMO. munchiechee wrote: > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. -- __________________________________________________ _________ tw 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: TJ engine swap - 4.0 to something with better MPG?
So how many years do you figure it'd take to pay for the cost of the engine
conversion with better fuel economy. My best suggestion is that you sell the Jeep and buy a Geo. Jerry -- Jerry Bransford PP-ASEL N6TAY See the Geezer Jeep at http://members.cox.net/jerrypb/ "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
So how many years do you figure it'd take to pay for the cost of the engine
conversion with better fuel economy. My best suggestion is that you sell the Jeep and buy a Geo. Jerry -- Jerry Bransford PP-ASEL N6TAY See the Geezer Jeep at http://members.cox.net/jerrypb/ "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
So how many years do you figure it'd take to pay for the cost of the engine
conversion with better fuel economy. My best suggestion is that you sell the Jeep and buy a Geo. Jerry -- Jerry Bransford PP-ASEL N6TAY See the Geezer Jeep at http://members.cox.net/jerrypb/ "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
So how many years do you figure it'd take to pay for the cost of the engine
conversion with better fuel economy. My best suggestion is that you sell the Jeep and buy a Geo. Jerry -- Jerry Bransford PP-ASEL N6TAY See the Geezer Jeep at http://members.cox.net/jerrypb/ "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
That is normal but if you put 13" tires on it, install a 2.0L engine, change
the body style to be more aerodynamic, put a lowering kit in it, well heck you may as well go and buy a GEO. -- HarryS "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
That is normal but if you put 13" tires on it, install a 2.0L engine, change
the body style to be more aerodynamic, put a lowering kit in it, well heck you may as well go and buy a GEO. -- HarryS "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
That is normal but if you put 13" tires on it, install a 2.0L engine, change
the body style to be more aerodynamic, put a lowering kit in it, well heck you may as well go and buy a GEO. -- HarryS "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
That is normal but if you put 13" tires on it, install a 2.0L engine, change
the body style to be more aerodynamic, put a lowering kit in it, well heck you may as well go and buy a GEO. -- HarryS "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
On Sun, 22 Aug 2004 06:05:00 GMT, twaldron
<thomas@OBVIOUSrubicons.com> wrote: >How could you possibly justify the cost of an engine swap for that mpg >difference? Your TJ gets pretty normal mpg for a TJ, IMO. > Really? No wonder my kid bitchs about his TJ's mileage. My YJ(4cyl-5sp)gets better than 22, my wife's YJ(6cyl-5sp)gets a little better than that. Guess newer isn't always better...you're right after all, Bill<d&r>. -- Old Crow '82 Shovelhead FLT 92" 'Pearl' '95 Jeep YJ Rio Grande ASE Certified Master Auto Tech + L1 TOMKAT, BS#133, SENS, MAMBM, DOF#51 |
Re: TJ engine swap - 4.0 to something with better MPG?
On Sun, 22 Aug 2004 06:05:00 GMT, twaldron
<thomas@OBVIOUSrubicons.com> wrote: >How could you possibly justify the cost of an engine swap for that mpg >difference? Your TJ gets pretty normal mpg for a TJ, IMO. > Really? No wonder my kid bitchs about his TJ's mileage. My YJ(4cyl-5sp)gets better than 22, my wife's YJ(6cyl-5sp)gets a little better than that. Guess newer isn't always better...you're right after all, Bill<d&r>. -- Old Crow '82 Shovelhead FLT 92" 'Pearl' '95 Jeep YJ Rio Grande ASE Certified Master Auto Tech + L1 TOMKAT, BS#133, SENS, MAMBM, DOF#51 |
Re: TJ engine swap - 4.0 to something with better MPG?
On Sun, 22 Aug 2004 06:05:00 GMT, twaldron
<thomas@OBVIOUSrubicons.com> wrote: >How could you possibly justify the cost of an engine swap for that mpg >difference? Your TJ gets pretty normal mpg for a TJ, IMO. > Really? No wonder my kid bitchs about his TJ's mileage. My YJ(4cyl-5sp)gets better than 22, my wife's YJ(6cyl-5sp)gets a little better than that. Guess newer isn't always better...you're right after all, Bill<d&r>. -- Old Crow '82 Shovelhead FLT 92" 'Pearl' '95 Jeep YJ Rio Grande ASE Certified Master Auto Tech + L1 TOMKAT, BS#133, SENS, MAMBM, DOF#51 |
Re: TJ engine swap - 4.0 to something with better MPG?
On Sun, 22 Aug 2004 06:05:00 GMT, twaldron
<thomas@OBVIOUSrubicons.com> wrote: >How could you possibly justify the cost of an engine swap for that mpg >difference? Your TJ gets pretty normal mpg for a TJ, IMO. > Really? No wonder my kid bitchs about his TJ's mileage. My YJ(4cyl-5sp)gets better than 22, my wife's YJ(6cyl-5sp)gets a little better than that. Guess newer isn't always better...you're right after all, Bill<d&r>. -- Old Crow '82 Shovelhead FLT 92" 'Pearl' '95 Jeep YJ Rio Grande ASE Certified Master Auto Tech + L1 TOMKAT, BS#133, SENS, MAMBM, DOF#51 |
Re: TJ engine swap - 4.0 to something with better MPG?
You would be better off to buy a Jeep with a 4 Banger already in it.
However, your problem may not be the engine size. Tire size, tire pressure, body lifts, axle ratios, and as you say, driving habits all affect mileage - usually much more than the difference between a 4 & 6 cyl. For instance, just try dropping your freeway speed by 5mph for a week and you'll likely notice a 2 mpg. increase. My 93 YJ with a 4cyl/5speed (stock tire size & gears, no lift) gets about 22 mpg if I drive at 55 on normal roads. When I get to the interstate, I typically drive 65-70 and my mileage drops to ~18 mpg - nearly a 20% difference in economy. The faster you try to drive a car with the aerodynamics of a house, big tires, and geared for offroad use, your fuel economy will suffer much more dramatically than if you are driving a Lexus. It is a lot cheaper to make some tire changes and driving changes than an engine swap. Dana Rohleder Port Kent, NY "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." G.W. Bush - Washington, D.C., Aug. 5, 2004 "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
You would be better off to buy a Jeep with a 4 Banger already in it.
However, your problem may not be the engine size. Tire size, tire pressure, body lifts, axle ratios, and as you say, driving habits all affect mileage - usually much more than the difference between a 4 & 6 cyl. For instance, just try dropping your freeway speed by 5mph for a week and you'll likely notice a 2 mpg. increase. My 93 YJ with a 4cyl/5speed (stock tire size & gears, no lift) gets about 22 mpg if I drive at 55 on normal roads. When I get to the interstate, I typically drive 65-70 and my mileage drops to ~18 mpg - nearly a 20% difference in economy. The faster you try to drive a car with the aerodynamics of a house, big tires, and geared for offroad use, your fuel economy will suffer much more dramatically than if you are driving a Lexus. It is a lot cheaper to make some tire changes and driving changes than an engine swap. Dana Rohleder Port Kent, NY "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." G.W. Bush - Washington, D.C., Aug. 5, 2004 "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
You would be better off to buy a Jeep with a 4 Banger already in it.
However, your problem may not be the engine size. Tire size, tire pressure, body lifts, axle ratios, and as you say, driving habits all affect mileage - usually much more than the difference between a 4 & 6 cyl. For instance, just try dropping your freeway speed by 5mph for a week and you'll likely notice a 2 mpg. increase. My 93 YJ with a 4cyl/5speed (stock tire size & gears, no lift) gets about 22 mpg if I drive at 55 on normal roads. When I get to the interstate, I typically drive 65-70 and my mileage drops to ~18 mpg - nearly a 20% difference in economy. The faster you try to drive a car with the aerodynamics of a house, big tires, and geared for offroad use, your fuel economy will suffer much more dramatically than if you are driving a Lexus. It is a lot cheaper to make some tire changes and driving changes than an engine swap. Dana Rohleder Port Kent, NY "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." G.W. Bush - Washington, D.C., Aug. 5, 2004 "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
You would be better off to buy a Jeep with a 4 Banger already in it.
However, your problem may not be the engine size. Tire size, tire pressure, body lifts, axle ratios, and as you say, driving habits all affect mileage - usually much more than the difference between a 4 & 6 cyl. For instance, just try dropping your freeway speed by 5mph for a week and you'll likely notice a 2 mpg. increase. My 93 YJ with a 4cyl/5speed (stock tire size & gears, no lift) gets about 22 mpg if I drive at 55 on normal roads. When I get to the interstate, I typically drive 65-70 and my mileage drops to ~18 mpg - nearly a 20% difference in economy. The faster you try to drive a car with the aerodynamics of a house, big tires, and geared for offroad use, your fuel economy will suffer much more dramatically than if you are driving a Lexus. It is a lot cheaper to make some tire changes and driving changes than an engine swap. Dana Rohleder Port Kent, NY "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." G.W. Bush - Washington, D.C., Aug. 5, 2004 "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Well since no one else will jump on this one, I will, how much do you want
for your engine? Would replace my old 258 in my CJ nicely, already have the AX15 tranny in it so would be a bolt in swap for me. You can get a chevy 350 turn key engine with 380 HP for $3500.00, wouldn't do much for your gas milage but would give your TJ a nice kick, then sell me your 4.0 L for say a grand :) "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Well since no one else will jump on this one, I will, how much do you want
for your engine? Would replace my old 258 in my CJ nicely, already have the AX15 tranny in it so would be a bolt in swap for me. You can get a chevy 350 turn key engine with 380 HP for $3500.00, wouldn't do much for your gas milage but would give your TJ a nice kick, then sell me your 4.0 L for say a grand :) "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Well since no one else will jump on this one, I will, how much do you want
for your engine? Would replace my old 258 in my CJ nicely, already have the AX15 tranny in it so would be a bolt in swap for me. You can get a chevy 350 turn key engine with 380 HP for $3500.00, wouldn't do much for your gas milage but would give your TJ a nice kick, then sell me your 4.0 L for say a grand :) "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Well since no one else will jump on this one, I will, how much do you want
for your engine? Would replace my old 258 in my CJ nicely, already have the AX15 tranny in it so would be a bolt in swap for me. You can get a chevy 350 turn key engine with 380 HP for $3500.00, wouldn't do much for your gas milage but would give your TJ a nice kick, then sell me your 4.0 L for say a grand :) "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Dude your driving a J**P not a riced out Honda P.O.S., if you want better
mileage then take the advice of others and sell it, buy a Geo. Snow... "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Dude your driving a J**P not a riced out Honda P.O.S., if you want better
mileage then take the advice of others and sell it, buy a Geo. Snow... "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Dude your driving a J**P not a riced out Honda P.O.S., if you want better
mileage then take the advice of others and sell it, buy a Geo. Snow... "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
Dude your driving a J**P not a riced out Honda P.O.S., if you want better
mileage then take the advice of others and sell it, buy a Geo. Snow... "munchiechee" <munchiechee@sbcglobal.net> wrote in message news:cb153bd2.0408212159.54b21140@posting.google.c om... > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
The short answer is no.
In my experience the aerodynamics are the mileage factor. No matter the engine or the load they all get about the same mileage. It depends on your foot and the speed you want to run and/or the 'RPM'. If I am running at a GPS checked 'real' 65 mph in 5th gear, my 33" tires keep my rpm down to about 1600 or so. It then sucks gas big time and I get down near 15 or 16 mpg. If I drop down to 4th gear at 65 mph and keep my rpm in the/my engine's 'sweet spot' of 2300 rpm, I get a consistent 23 mpg or 11 L/100km. I checked this a couple weeks ago running fully loaded for camping. Then come gas differences!!! If I run on 'real' gasoline, my mileage always stays up way over 20 mpg. If I run on any kind of alcohol or ethanol mix like my owners manual warns 'not' to do unless in an emergency because you are out of gas, my mileage is almost cut in half. The manual says the mix may 'degrade performance' before rotting out the fuel system. LOL! Yup, it 'sure' does degrade performance. Have you checked your speedometer/odometer for accuracy? Mine went 100% right on my CJ7 when I put 33's on it and it went 100% right on my Cherokee when I put 235's on it. That make a difference in the perceived vs real mpg.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's munchiechee wrote: > > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
The short answer is no.
In my experience the aerodynamics are the mileage factor. No matter the engine or the load they all get about the same mileage. It depends on your foot and the speed you want to run and/or the 'RPM'. If I am running at a GPS checked 'real' 65 mph in 5th gear, my 33" tires keep my rpm down to about 1600 or so. It then sucks gas big time and I get down near 15 or 16 mpg. If I drop down to 4th gear at 65 mph and keep my rpm in the/my engine's 'sweet spot' of 2300 rpm, I get a consistent 23 mpg or 11 L/100km. I checked this a couple weeks ago running fully loaded for camping. Then come gas differences!!! If I run on 'real' gasoline, my mileage always stays up way over 20 mpg. If I run on any kind of alcohol or ethanol mix like my owners manual warns 'not' to do unless in an emergency because you are out of gas, my mileage is almost cut in half. The manual says the mix may 'degrade performance' before rotting out the fuel system. LOL! Yup, it 'sure' does degrade performance. Have you checked your speedometer/odometer for accuracy? Mine went 100% right on my CJ7 when I put 33's on it and it went 100% right on my Cherokee when I put 235's on it. That make a difference in the perceived vs real mpg.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's munchiechee wrote: > > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
The short answer is no.
In my experience the aerodynamics are the mileage factor. No matter the engine or the load they all get about the same mileage. It depends on your foot and the speed you want to run and/or the 'RPM'. If I am running at a GPS checked 'real' 65 mph in 5th gear, my 33" tires keep my rpm down to about 1600 or so. It then sucks gas big time and I get down near 15 or 16 mpg. If I drop down to 4th gear at 65 mph and keep my rpm in the/my engine's 'sweet spot' of 2300 rpm, I get a consistent 23 mpg or 11 L/100km. I checked this a couple weeks ago running fully loaded for camping. Then come gas differences!!! If I run on 'real' gasoline, my mileage always stays up way over 20 mpg. If I run on any kind of alcohol or ethanol mix like my owners manual warns 'not' to do unless in an emergency because you are out of gas, my mileage is almost cut in half. The manual says the mix may 'degrade performance' before rotting out the fuel system. LOL! Yup, it 'sure' does degrade performance. Have you checked your speedometer/odometer for accuracy? Mine went 100% right on my CJ7 when I put 33's on it and it went 100% right on my Cherokee when I put 235's on it. That make a difference in the perceived vs real mpg.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's munchiechee wrote: > > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
The short answer is no.
In my experience the aerodynamics are the mileage factor. No matter the engine or the load they all get about the same mileage. It depends on your foot and the speed you want to run and/or the 'RPM'. If I am running at a GPS checked 'real' 65 mph in 5th gear, my 33" tires keep my rpm down to about 1600 or so. It then sucks gas big time and I get down near 15 or 16 mpg. If I drop down to 4th gear at 65 mph and keep my rpm in the/my engine's 'sweet spot' of 2300 rpm, I get a consistent 23 mpg or 11 L/100km. I checked this a couple weeks ago running fully loaded for camping. Then come gas differences!!! If I run on 'real' gasoline, my mileage always stays up way over 20 mpg. If I run on any kind of alcohol or ethanol mix like my owners manual warns 'not' to do unless in an emergency because you are out of gas, my mileage is almost cut in half. The manual says the mix may 'degrade performance' before rotting out the fuel system. LOL! Yup, it 'sure' does degrade performance. Have you checked your speedometer/odometer for accuracy? Mine went 100% right on my CJ7 when I put 33's on it and it went 100% right on my Cherokee when I put 235's on it. That make a difference in the perceived vs real mpg.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's munchiechee wrote: > > I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. > > I'm basically annoyed by the gas mileage, so my question is- can I > swap in an engine (or engine/tranny combo) that will give me at least > the same performance (torque, power) and also has mpg in the 19-24 mpg > range? > > Sure its a lot to ask, but if its possible I'd like to do it and > figure it would be a fun project. > > thanks. |
Re: TJ engine swap - 4.0 to something with better MPG?
munchiechee did pass the time by typing:
> I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. What you would spend on doing this would be much much much much much more than what you would save on fuel. As Hesco says, "Speed costs money, how fast do you want to go?" Your 4.0 should be getting better than that. Let's start off with the basics. Plugs, Wires, Rotor, Cap Clean the IAP http://members.cox.net/wilsond/tb/tb.html If the plugs show rich (excess carbon) then you should replace the O2 sensor. Yes, it can set a code but the O2 sensor will drift off long before any codes get set. Depending on how long you have ran the cat might need replacement. You should also check your exhaust header for cracks. The 4.0 header is notorious for this. You know it's cracked when the engine sounds like a diesel or you start getting what sounds like lifter noise. Switch out to full synthetic if you haven't already, that's good for a teeny improvement. But by and far the best way to reduce fuel use is to take it slow and easy. The goal on the highway is to not have to use the brakes. And try not to beat folks to a red light. :) I tried driving like that for a couple of tanks and it made a 4mpg difference in my city driving. (then again my ZJ can gulp fuel) -- -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors Banks Header - and BEER, in the fridge! |
Re: TJ engine swap - 4.0 to something with better MPG?
munchiechee did pass the time by typing:
> I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. What you would spend on doing this would be much much much much much more than what you would save on fuel. As Hesco says, "Speed costs money, how fast do you want to go?" Your 4.0 should be getting better than that. Let's start off with the basics. Plugs, Wires, Rotor, Cap Clean the IAP http://members.cox.net/wilsond/tb/tb.html If the plugs show rich (excess carbon) then you should replace the O2 sensor. Yes, it can set a code but the O2 sensor will drift off long before any codes get set. Depending on how long you have ran the cat might need replacement. You should also check your exhaust header for cracks. The 4.0 header is notorious for this. You know it's cracked when the engine sounds like a diesel or you start getting what sounds like lifter noise. Switch out to full synthetic if you haven't already, that's good for a teeny improvement. But by and far the best way to reduce fuel use is to take it slow and easy. The goal on the highway is to not have to use the brakes. And try not to beat folks to a red light. :) I tried driving like that for a couple of tanks and it made a 4mpg difference in my city driving. (then again my ZJ can gulp fuel) -- -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors Banks Header - and BEER, in the fridge! |
Re: TJ engine swap - 4.0 to something with better MPG?
munchiechee did pass the time by typing:
> I have a 97 TJ 4.0/manual thats been great on road and off - the only > consistent problem I have with the Jeep is the MPGs, way less than > advertised, I'm averaging 12-14 in city and about 16 on freeway. > > I've checked everything out possible, and even taken it to the > stealer; either I have a very heavy foot or I just have a thirsty > jeep. What you would spend on doing this would be much much much much much more than what you would save on fuel. As Hesco says, "Speed costs money, how fast do you want to go?" Your 4.0 should be getting better than that. Let's start off with the basics. Plugs, Wires, Rotor, Cap Clean the IAP http://members.cox.net/wilsond/tb/tb.html If the plugs show rich (excess carbon) then you should replace the O2 sensor. Yes, it can set a code but the O2 sensor will drift off long before any codes get set. Depending on how long you have ran the cat might need replacement. You should also check your exhaust header for cracks. The 4.0 header is notorious for this. You know it's cracked when the engine sounds like a diesel or you start getting what sounds like lifter noise. Switch out to full synthetic if you haven't already, that's good for a teeny improvement. But by and far the best way to reduce fuel use is to take it slow and easy. The goal on the highway is to not have to use the brakes. And try not to beat folks to a red light. :) I tried driving like that for a couple of tanks and it made a 4mpg difference in my city driving. (then again my ZJ can gulp fuel) -- -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors Banks Header - and BEER, in the fridge! |
| All times are GMT -4. The time now is 07:49 PM. |
© 2024 MH Sub I, LLC dba Internet Brands