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Topic Review (Newest First)
09-18-2013 08:26 PM
iiTMRii
Quote:
Originally Posted by GingerTJ View Post
People with l4 even run 35"s with 4.88 gears
I have that exact setup and can do 70-75 on the highway and get 20mpg doing it.
09-17-2013 04:56 PM
1999 Wrangler SE Well, it's been over a year that I started this post. I've taken my Jeep on several cross country trips and I Love driving it. Just a little slow getting on the interstate but other than that, no problem. Also getting around 20-21 MPG
09-17-2013 11:57 AM
GingerTJ People with l4 even run 35"s with 4.88 gears
09-17-2013 11:46 AM
cedar Ive had mine for about a year with just over 155000 miles. It still runs good does not burn any oil. It goes over 65 on the interstate no problem. I would probably not like the 2.5 if I lived in a area with a lot of hills. I currently have 30" BFG on now but have a set of 31" BFG in the gargage waiting to be installed along with a 2" BB. I hope I dont loose to much power.
09-17-2013 10:43 AM
97TJnewbie My 97 TJ has a 2.5l not sure the mileage because it was swapped. but even with 35's on it I got it to squak the tires. Even if it was on accident. Just need to learn how to drive your car. I had a stock turbod eclipse and would whoop people in their v8 mustangs, and camaros all day. Why because I knew how to drive my car.
09-17-2013 09:23 AM
Wondermutt 1999 TJ 4 Banger here. Original owner. I have had my share of love/hate relationships with the 2.5L over the years. While I never doubted the reliability of the 2.5L, my ego flared and waned over the additional power of the 4.0L.
But i am 42 now and have mellowed out some and have a newfound love for my Jeep now that it has become my daily driver (other car died).
I drive and hour one way to work taking the country back roads and am really enjoying the drive.
Looking forward to my KC HiLights I'm installing soon for more backroads visibility.
09-17-2013 12:33 AM
AngeliasDad
Quote:
Originally Posted by Walkingstick View Post
I like to back roads, play some music and enjoy life. Hate the highway, does not matter what vehicle I am driving.
Exactly !!!! But I find it more fun in a Jeep .... I have only had mine for little over a month, but I find myself taking the long route home after work just to ride in it a little longer. Specially with the top down. Only thing close to it is was riding my motorcycle.
09-16-2013 01:50 PM
vertical horizons
Quote:
Originally Posted by Walkingstick View Post
I like to back roads, play some music and enjoy life. Hate the highway, does not matter what vehicle I am driving.
I like your way of thinking.
With that kind of logic, it really wouldn't matter whether you ran a 2.5 or a 4.0.
06-18-2013 05:24 PM
Walkingstick
Quote:
Originally Posted by TimboSlice View Post
I don't think Jeeps are really designed to go over 40 mph. They can. But are they meant to? I think not.
I like to back roads, play some music and enjoy life. Hate the highway, does not matter what vehicle I am driving.
06-18-2013 05:21 PM
TimboSlice I don't think Jeeps are really designed to go over 40 mph. They can. But are they meant to? I think not.
06-18-2013 05:21 PM
Walkingstick
Quote:
Originally Posted by vertical horizons View Post

I don't mean to sound stupid, but what sort of mods would help the 2.5L?
turbo, etc.?
Change gearing ratio.
06-18-2013 05:20 PM
Walkingstick
Quote:
Originally Posted by vertical horizons View Post

I don't mean to sound stupid, but what sort of mods would help the 2.5L?
turbo, etc.?
RIPP Supercharger
06-18-2013 05:01 PM
vertical horizons
Quote:
Originally Posted by The Green Machine View Post
... Just put on aftermarket performance mods, and you'll be able to keep up in traffic.
I don't mean to sound stupid, but what sort of mods would help the 2.5L?
turbo, etc.?
06-18-2013 03:44 PM
wwch99tj
Quote:
Originally Posted by 1999 Wrangler SE View Post
Just to give everyone an update, I had my Wrangler for a year and put 18,000 miles on it. Runs great. I'm very happy with my 2.5L engine and the rest of the vehicle.
Great to hear
06-18-2013 03:38 PM
1999 Wrangler SE Just to give everyone an update, I had my Wrangler for a year and put 18,000 miles on it. Runs great. I'm very happy with my 2.5L engine and the rest of the vehicle.
06-18-2013 08:24 AM
JeepersDave My 97 came with the 2.5, I bought it at 125K miles and it let go at 168K. During that period, we ran the stock 4.10 gears and 32" tires and was able to run trails at Moab, and go pretty much wherever we wanted. Since I was having problems with the AX5, I chose to convert to the 4.0 and NV3550 when the little guy wore out. I am happy with the upgrade. That said, if I were faced with the same situation again, I would buy another 2.5 TJ without reservation if the price was right, I would expect to get about 175K out of it, and if it was pre 1999, I would go to the 4.0 if the 2.5 croaked. However, I strongly suggest that if you're contemplating buying a TJ, do your homework and buy one as close to what you want as you can afford. Don't look at it as what you can change it into unless you're experienced in rebuilding Jeeps. It really is a frustrating pain in the ass especially if you've never done this before.

Running the 4.10 gears and 32" BFG KO's, the engine is right at 2300 rpm at 65 mph. My fuel mileage was right at 19 overall before the change, and now runs about 1 mpg less. The 4.0 has less than 700 miles on it so far, so that may improve. Again, I'm happy with the swap, but I'd really think hard before I'd do it again!
06-17-2013 05:32 PM
Jiffydarren
Quote:
Originally Posted by jkaufman_95 View Post
Really? I dumped 4k into one with 27k miles and it shot craps...
*



*results not guaranteed for all, especially when speaking of cars trucks vans and other completely subjective products, not all products are the same, it does not take massive intelligence to know this point with any sort of disclaimer
06-17-2013 04:48 PM
jeepndon
Quote:
Originally Posted by 1999 Wrangler SE View Post
I am trying to get some info on the 2.5 L engine. How well does it hold up? I know the 4.0 L is good forever, but how about the 2.5 L? I have asked this question before, but no one seems to answer it.

Would someone please give me some insight on this?

Thanks!!!!!
I have a 2.5L in my 99TJ it lasted 160,000MI of hard use high RPM's on road accelerating, off road abuse (Mud, water lots of hill climbs, Rocks) I was not supprised at all when it went I was suprised it lasted as long as it did with all the things I did to it love the durability but hate the power.
06-14-2013 10:08 PM
Neltronic
Quote:
Originally Posted by sgpd1sam View Post
I've had my 97 TJ for about 5 years now, well over 100K and it runs fine. Just had to change a couple of sensors here and there. It won't go anywhere fast, but it WILL go anywhere. I'm no expert but I've accidentally wandered onto some nearly black diamond stuff and came out the other end relatively unscathed. I had mentioned to people in the past that maybe I should have got the 4.0, but the response was pretty much the same. "Why? You can only go so fast on the trails anyway." I'm very happy with it and plan on handing it down when I'm too old to go play. It will do 75 on the highway flats, peaks around 50-55 over the Cajon Pass here in So Cal but who cares. If I was in a hurry I woulda left earlier.
Went up to the cajon pass a while ago. Freakin gorgeous. My i4 did fine :-)

Attachment 261593
06-14-2013 09:57 PM
Walkingstick
Quote:
Originally Posted by 1999 Wrangler SE View Post
I am trying to get some info on the 2.5 L engine. How well does it hold up? I know the 4.0 L is good forever, but how about the 2.5 L? I have asked this question before, but no one seems to answer it.

Would someone please give me some insight on this?

Thanks!!!!!
It's just as good. Don't treat your vehicle like a crack whore and it'll be fine.
06-14-2013 09:44 PM
sgpd1sam
2.5L Engine

I've had my 97 TJ for about 5 years now, well over 100K and it runs fine. Just had to change a couple of sensors here and there. It won't go anywhere fast, but it WILL go anywhere. I'm no expert but I've accidentally wandered onto some nearly black diamond stuff and came out the other end relatively unscathed. I had mentioned to people in the past that maybe I should have got the 4.0, but the response was pretty much the same. "Why? You can only go so fast on the trails anyway." I'm very happy with it and plan on handing it down when I'm too old to go play. It will do 75 on the highway flats, peaks around 50-55 over the Cajon Pass here in So Cal but who cares. If I was in a hurry I woulda left earlier.
03-16-2013 01:27 AM
Zevman I've had both 2.5l and the 6, I did love the power of the six, yet I bought another 4. Two reasons, it was easy to find a stock 2.5 than a 6 and I wanted to build from scratch. The 4 limits my mods from getting to crazy and I know they are built solid. For speed I have a 2012 BMW F800R. I guess I have the best of both worlds. I would have bought a 6 if I found what I was looking for at the right price. I don't regret my 4 in any way. I even put 285k on a 94 range rover that I drove like a jeep to its full capabilities. You get out what you put in.
03-16-2013 12:51 AM
JustLearning I have a 2.4l 6 speed and I love it. Yeah it lacks speed uphill, but who really cares? After you are over the hill you will be back up to speed with no problems. Furthermore, off road it is great, it practically has a granny gear cuz it's geared pretty low. I don't really know why you would need power off-road. Last person I know who tried to power his way through a rut left his drivetrain lying on the floor.
03-16-2013 12:21 AM
The Green Machine They were also in Dodge Dakota's.
03-15-2013 01:04 AM
Yavor_Frank AMC first introduced the inline 4 2.5L engine back in 1984. Back then, the engine was carbureted, but the engine matured fuel injection was introduced later. This engine was used on Wrangler TJ, Cherokee XJ, and Wrangler YJ. You can read more from 91-97 Jeep 150 / Jeep 2.5 Engine (Part #: JEEP-150LB-4), it always help me when I need information related to cars, their engines etc.
01-28-2013 06:03 AM
andrew127 My 2.5 has 367,000kms on and is still tight as a drum. Very solid engine, and infact the entire drivetrain is good as well. Many Jeepers Ive talked to have said that if your given the choice, a 2.5 is a much better way to go than the 4.0. you get almost the same HP rating in the real world, not near as many cooling issues, and being smaller I find a bit better fuel milage as well. Some of the minor trail riding I do with my Jeep in 4LO will pull me up, over and through everything all the 4.0 do with ease. Even right now with the Canadian deep freeze we just had last week of -28c in the mornings I never had any problems starting or driving mine.
01-27-2013 11:50 PM
kiddevo I know an old post... but I just sold mine.. 2.5, engine outlasted the body..... 195,000....... solid.....
07-07-2012 09:13 AM
jradjsb All vehicles are different. I have a 96 Honda Accord w. 296k miles and have np prob, my brother has a 05 Honda accord w 140k miles and has all kinda problems. Same goes for Jeeps. Unless you buy brand new, you don't know how the vehicle was treated before you and you could be getting an engine that has been gutted, hence wont last as long. As far as scratching: A 2.5 w/ auto wont, but I bought my 2.5 5 spd used and the rt rear tire was wore out but the other three still had tread. I think it did more than scratch. 1st-4th are strong and get s16-18 mpg on higway on 30's. Can't complain about it.
07-04-2012 11:29 AM
The Green Machine The Wrangler is not a racing vehicle though. I used to try to race around , and the ax-5 transmission is just not set up for it. Any Wrangler owner will find out soon enough that it is intended to be a durable vehicle, in it's own class.
07-02-2012 10:46 AM
Walkingstick
Quote:
Originally Posted by jefferyc22
I drove the 4.0 today and the difference is more extreme than the numbers. The 2.5 won't even scratch in first on dry pavement. The 4.0 scratches in 2nd(geared higher than the 2.5).
In all seriousness thou the 4.0 has enough power to merge on those short on ramps and evade highway stacking. Go test drive a healthy 4.0 and than come back here and argue about how a 2.5 is G2G.
You're daft. In all honesty you are.
I can chirp my tires in my 2.5 all day long. And the 2.5s have 4.10 gearing(better than the 3.73).
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