TJ engine swap - 4.0 to something with better MPG?
#21
Guest
Posts: n/a
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
<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
#22
Guest
Posts: n/a
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.
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.
#23
Guest
Posts: n/a
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.
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.
#24
Guest
Posts: n/a
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.
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.
#25
Guest
Posts: n/a
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.
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.
#26
Guest
Posts: n/a
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.
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.
#27
Guest
Posts: n/a
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.
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.
#28
Guest
Posts: n/a
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.
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.
#29
Guest
Posts: n/a
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.
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.
#30
Guest
Posts: n/a
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.
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.