Wrangler milage/power - Page 3 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Wrangler milage/power

Savvy/Currie Aluminum Control ArmsROCK BOTTOM prices on LIFT KITS at Rockridge4wd!! WANT TO December Specials at Jeephut.com

Reply
Unread 04-02-2013, 01:01 PM   #31
Fellows45
Member
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green, Kentucky
Posts: 222
Guys, comparing the 2.4 to the 2.5 is like drag racing minivans....it's not worth it..
As far as the TBI to MPI if that's what he wants to do then by all mean..it's just more efficient and finer tuned the TBI.

__________________
2002 Jeep WJ, 4.7, EBC Stage 4 brakes, Bilstein shocks (Still In progress)

1989 Wrangler YJ 2.5, 2 inch body lift, 33 inch tires
Fellows45 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 01:09 PM   #32
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
Quote:
Originally Posted by Fellows45 View Post
Guys, comparing the 2.4 to the 2.5 is like drag racing minivans....it's not worth it..
As far as the TBI to MPI if that's what he wants to do then by all mean..it's just more efficient and finer tuned the TBI.
Drag racing minivans is fun though
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 01:36 PM   #33
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
If you're looking for more power, why bother with the 2.5L? It's fine as is, has just enough to cruise around town and on the highways. But if you want more power, consider swapping in a bigger engine. There's thousands of threads around here with people who have done engine swaps, the information is nearly endless.

A Jeep Grand Cherokee that runs, drives, passes smog, no back fees on the registration, etc. can be had for less than $1000 which gives you everything you need to swap in something with more power. Part out what you don't need, invest in what you want, and you'd be into a swap around $1500 or so when all is said and done.
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 01:47 PM   #34
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
I just want to be able to accelerate going uphill lol.
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 03:35 PM   #35
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
Quote:
Originally Posted by flea1987 View Post
I just want to be able to accelerate going uphill lol.
Well what kind of speed are you talking about? Because a 2.5L in 4Low on a trail can accelerate uphill pretty quickly
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 03:43 PM   #36
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
Haven't had the chance to test on trails yet, just on the interstate had an issue maintaining speed going uphill in 5th and 4th doing over 60, not sure if its a common issue, or maybe because i need to replace my pcv's on the intake
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 03:45 PM   #37
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
Having a healthy running 2.5L that can breathe easily is only part of the equation. Tire size and gearing also come into play. Too big of a tire and it obviously won't be going anywhere very quickly on the stock 4.10 gears. Most get by just fine with 31" tires, you lose 5th gear except for long flat sections of highway.
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 03:48 PM   #38
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
got the factory recommended on there for now, once I save up I plan to install some 30's or 31's and a shackle lift, or maybe just better leaf springs
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 03:54 PM   #39
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
A pair of 1" shackles will lift it enough to clear 30" tires, 31's rub pretty easily.

You should consider getting a pair of quick disconnects for the swaybar, and removing both front and rear track bars. The Track Bars are unnecessary suspension components the factory placed on the Jeep to get the safety hippies off of their backs. They don't need them in place, they bind up the suspension and can cause components to wear out prematurely as well as break things. Flexes pretty well on stock leafs and shocks IMO:





The YJ is mine, it's riding on stock leafs/shocks and 1" lift shackles with 29" tires. As you can see I can stuff them pretty easily under there, so 30" is the max. A 2.5" lift will let you run 31" tires very easily with fully unlocked suspension. Don't forget that if you DO lift your Jeep, you need to extend the brake lines. Mine were pretty much at the limit in those pictures, any more and they would have broke.
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:04 PM   #40
Fellows45
Member
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green, Kentucky
Posts: 222
If you want 31s just put a 2 inch body lift on it...much cheaper and you have plenty of Clarence.. And it looks decent, but I wouldn't go much higher than 2 inches.
__________________
2002 Jeep WJ, 4.7, EBC Stage 4 brakes, Bilstein shocks (Still In progress)

1989 Wrangler YJ 2.5, 2 inch body lift, 33 inch tires
Fellows45 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:07 PM   #41
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
not a nut about putting it higher than I need to, one inch and 29's will suite me fine from looking at your jeep stance. My offroading will more than likely only be done during hunting season or beach trips (undercoating will be done before beach trips are made). I hunt in east TX so a monster lift and waht not isn't really required to get around. Not sure what track bars are, but that means it's time for research
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:12 PM   #42
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
Quote:
Originally Posted by Fellows45 View Post
If you want 31s just put a 2 inch body lift on it...much cheaper and you have plenty of Clarence.. And it looks decent, but I wouldn't go much higher than 2 inches.
I believe in to each their own, but not a big fan of body lifts. They look good and make clearance like they should, but not for me. prefer to upgrade suspension anyways
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:23 PM   #43
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
Yup, you definitely don't need a big lift to go places. Mine goes everywhere around here, and we have some pretty nasty rainwashed trails with big deep ruts.

Here's a pic of mine on level ground:



Use your head and it'll take you anywhere you want to go

Definitely read up on the use of Track Bars. Leaf Springs don't need them.
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:34 PM   #44
flea1987
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2013
Location: temple, tx
Posts: 143
Why do people run track bars if they suck so bad? or do they help with road driving?
flea1987 is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 04:45 PM   #45
Xpress
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,811
Quote:
Originally Posted by flea1987 View Post
Why do people run track bars if they suck so bad? or do they help with road driving?
Jeep included them with the YJ line after the CJ's so called "instability". They basically limit the suspension from flexing on our Jeeps, which supposedly decreases the likelihood of rolling.

A Track Bar (or Panhard Bar) is essentially a piece of metal that is mounted on the frame on one end, and the other end is mounted to the opposing side of the axle. This is a TJ with coil springs, but it shows you what a Track Bar is and where it mounts up:



Track Bars are absolutely required for Coil Spring Jeeps, because they prevent the axle from moving left to right underneath the Jeep. Then a set of Control Arms prevents the axle from moving forwards or backwards, or twisting. Coil Springs can flex in nearly any direction imaginable, and that is why they require Track Bars and Control Arms to keep the axle centered underneath the Jeep.

These components don't limit the flex of Coil Springs at all, since a Coil Spring can stretch and compress in any direction. This picture shows this perfectly:



You can see how the coils are bent up in all sorts of shapes.

---------

Our YJ's (1987-1995) have Leaf Springs which effectively center the axle underneath the Jeep perfectly fine on their own. Leaf Springs also articulate differently than Coil Springs do- the side of the axle that is traveling up tucks in underneath the fender, whereas the side travelling down swings inward, and visa versa.

A Track Bar can only pivot in one direction, so while one direction isn't limited to flex, the other direction will bind up and keep the axle from flexing. This is why we remove our Track Bars (us YJ folk that is), to remove all suspension binding and to allow our axles to flex over obstacles.

The benefits range from a smoother ride on the road (because your suspension can absorb the bumps in the road), to more flex offroad. There's no drawbacks to removing them.

You have a Track Bar in the front and one in the rear.
__________________
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]

-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."
Xpress is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.