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Topic Review (Newest First)
01-30-2013 12:29 PM
Colin If you get the 4.0L I6 you certainly won't regret it.
01-30-2013 11:35 AM
toms01TJ Wanted a TJ. In my area, the 4.0's were going for 2-4k more than lower mile 2.5's. For my purposes, a 4-popper was suitable. Would I have taken a six??? Absolutely! Not for several grand more up front though.

All I use it for is driving around in the summer, and light off-roading on private property.

I had it re-geared to 4.88's, and added 30" Mud Rovers. This actually results in it being a bit "overgeared," but it'll run 65-75mph, even up the "hills" found around central Wisconsin.

The doors, rear seat, and soft top are all history. I store it in the winter, and it stays inside when rain is in the forecast.

I drive it as often as I can (coldest - it was 29 degrees when I left the house, but warmed into the low 60's during my workday).

I love my Jeep.

My .02
01-29-2013 10:08 PM
RevCo666 My question since I cannot compare a 4.0 vs 2.5(never drove a 2.5 yet) is why did chrysler designed both of these types of Jeeps?

I own a 4.0, and I'm not saying anything is wrong with the 2.5 in any respect but when I started to look for my jeep last summer, I was told that I would be better off with a i6 engine because you dont want to end up flooring it and having that extra amount of torque would less stressfull on the 4.0 (in theory). My last truck I owned was simply a 3.0 Mazda B3000(rear wheel only) standard 5speed. So to me going 2.5 from 3.0 wasnt a logical choice.
01-29-2013 09:52 PM
doghound93 I have been in my friends 4 and my other friends 6 cylinder to be honest and in my own opinion I think the 4 banger is fine and has plenty of power in it. I also have a 4 banger I'm fixing up because I got it for cheap and am making it my off road jeep. The one friend that has the 6 cylinder swears by it but he doesn't know what he is talking about. Imo the only difference between the 4 and 6 is highway and hill power but off road they are semi the same and can do the same things. Also the one downside of a 4 banger is there aren't as many options on engine upgrades for it compared to the 6 also offroading u don't have to worry about the 2 extra cylinders and don't have the extra weight of them
01-29-2013 09:17 PM
Donkerz OK, Well I think something is wrong with my Wrangler (4.0/NV3550) when 4 banger owners start saying they can cruise to 75 easy all day when my 4.0 struggles at that speed, overtaking is painful, starting to think I'm not getting the power the 4.0 is supposed to put out? Bruce Lee says I can't compare it to anything because I've never driven anything else, or something like that.
01-29-2013 08:31 PM
sonofabeach I'm in Florida. Got an 04 TJ 4 banger and love it.
I don't do much offroading other than cruising dirt roads in the woods around here and driving on the beach in St. Augustine, so smaller 235 75 R15s are all I need.
01-29-2013 08:01 PM
SIXTI I have a 1997 TJ with no engine mods,
4"suspension, 2"body, 35x12.50 R15 BFG MTR's, 4.88 gears, 1.25" wheel spacers, locked front & rear etc
I struggle to climb hills on the freeway and headwinds are my worst enemy.
Offroad - I have only outperformed or matched i6 Wranglers with the same general mods. Every time we go wheeling they're kind enough to let me and other 4 bangers lead the pack (on paved roads) because they know that we can't drive too fast.

I am looking to do an exhaust modification. I will seriously consider any suggestions/recommendations.
01-12-2013 07:47 PM
Lineman827 Stock 4cyl engine 5spd in my 97tj. Regeared to 4.88 to handle my 35x12.5 tires. No problems off road, bit I don't rock climb or do any steep hills, I live in south jersey so neither is a big issue. As for speed, yeah her name white lightnin is a bit of an oxymoron, but I didn't buy it to cruise 75 or better on hwy. I would buy another 4cyl in a heart beat. But like most things, personal pref. Is just that.
01-12-2013 07:46 PM
IndyJeepMan I love autos.
01-12-2013 07:37 PM
krisbman
Quote:
Originally Posted by WaterDR

Oh man, that is some funny shit!
Because its true!!! What tard compares a manual to an auto. Good grief!!!
01-12-2013 06:47 PM
WaterDR
Quote:
Originally Posted by krisbman

So basically yer sayin the 6 out performs the 4 in every aspect, DUH. Putting a manual against a slushbox is like comparing my ex wife to my girlfriend.
Oh man, that is some funny shit!
01-12-2013 01:29 PM
Lduggins I have both a 1997 2.5 and a 2003 4.0 the 6 is a lot easier to work on it has a lot more room under the hood
01-12-2013 01:04 PM
smashtj
Quote:
Originally Posted by Flopolopagus
I have owned a 4 cylinder for about a month. I have no idea why the previous owner put 33" tires on the thing, because the thing struggles up hills in 4th and the 5th gear is almost useless on the terrain where I am (mostly plentiful shallow hills). I wish I went for a 6, but around here, jeeps are way overpriced. I bought my '99, 78k mile TJ for $5,400. Check it out in my garage. KBB puts it at around $8,000 without the 6" Lift (4" coil skyjacker, 2" body) (No rust on frame either). If I were to guess, the value of this vehicle is around $10,000. I am thinking about turning it around for a profit, but I love it too much! Next fall I will probably upgrade.
4.56 or 4.88 ring and pinion
01-12-2013 12:34 PM
Flopolopagus I have owned a 4 cylinder for about a month. I have no idea why the previous owner put 33" tires on the thing, because the thing struggles up hills in 4th and the 5th gear is almost useless on the terrain where I am (mostly plentiful shallow hills). I wish I went for a 6, but around here, jeeps are way overpriced. I bought my '99, 78k mile TJ for $5,400. Check it out in my garage. KBB puts it at around $8,000 without the 6" Lift (4" coil skyjacker, 2" body) (No rust on frame either). If I were to guess, the value of this vehicle is around $10,000. I am thinking about turning it around for a profit, but I love it too much! Next fall I will probably upgrade.
01-12-2013 10:16 AM
Hillbilly1 For what they are designed for, the four cylinder is sufficient, does give better weight balance. If you want to go fast, a Jeep is not what you want regardless of the engine. If you are using it with larger tires and severe terrain, the extra hp is helpful, but the average Jeep user is not going to those extremes. Just get what you need. I've got a 4.3 that I eventually will put in mine when the Chrysler motor dies, but I'm in no hurry because it does what I need it to do right now.
01-12-2013 10:12 AM
smashtj
Quote:
Originally Posted by WaterDR
I have owned both a 4 and a 6 and can honestly say, I would never get a 4 again unless I were to use it only on trails or around town.

In my humble opinion, the 2.5 is absolutely terrible at a highway speed. It's not just the hills, but it can't pass and there is nothing you can do to make it better.

Just my 2 pennies.
I wheel with 4.0 and v8s all the time.with the stock 4.10s and trakloc and 31s there is alot to the weight differance.what i give up on the road i make up for in the trails.the thing that i really love is out of all the tjs and xjs ive owned this 2.5 is the most dependable.oil pressure up and temps down.makes some lifter noise but i didnt build this one.the next rebuild will be bullet proof bottomend with cam and rollerrockers.the cam will help in the power department.
01-12-2013 06:29 AM
WaterDR I have owned both a 4 and a 6 and can honestly say, I would never get a 4 again unless I were to use it only on trails or around town.

In my humble opinion, the 2.5 is absolutely terrible at a highway speed. It's not just the hills, but it can't pass and there is nothing you can do to make it better.

Just my 2 pennies.
01-12-2013 06:13 AM
mdaz75 I have a 91, 2.5" lift 31" tires, 2.5l, 5speed manual 134,000 miles. Runs strong, great on the highway and around town. Does pretty good up hill if you use the correct gear......don't be afraid to bring her up to 3500 rpm. Over all, absolutely no complaints!
01-12-2013 05:34 AM
cork1958 Personally,
Whether we're talking about Jeeps or trucks, a 4 banger in either is useless and/or ridiculous, IMO!

As was mentioned several times already, the mpg's is no different in a Jeep between a 4cyl and 6, so why take that puny engine?

Bigger IS sometimes better!!
01-12-2013 02:00 AM
krisbman
Quote:
Originally Posted by Moabrubi

Right.. and a Mustang with a V6 and a stick is comparable to one with a V8 and an auto .
Say it aint so
01-12-2013 01:57 AM
Moabrubi Lol. Nevermind
01-12-2013 01:28 AM
krisbman
Quote:
Originally Posted by Pate
It depends, if it's a 4cyl manual vs 6cyl automatic, they behave practically the same in the hills, rocks and dunes. if it's a manual 6cyl, it will outperform the 4cyl in every aspect.
So basically yer sayin the 6 out performs the 4 in every aspect, DUH. Putting a manual against a slushbox is like comparing my ex wife to my girlfriend.
01-12-2013 01:10 AM
Pate It depends, if it's a 4cyl manual vs 6cyl automatic, they behave practically the same in the hills, rocks and dunes. if it's a manual 6cyl, it will outperform the 4cyl in every aspect.
01-12-2013 01:03 AM
SurfKaster They're not bad motors, but I wouldn't set out to buy one. Just assume get the 4.0. They're are plenty to be had.
01-11-2013 11:36 PM
The Green Machine
Quote:
Originally Posted by Chadwhitehead10 View Post
I found a 2000 TJ in great condition today however it's a 4 Cyl. I'm
Not a mechanic by any means but I know this engine is not desired in a wrangler. I'm in Florida so I'm not going up hills like a maniac so I don't need tons of power, however is the trade off between the 6 and 4 that horrible? And if they are that bad is there anything I could do to get some more horsepower or better pick up? And would I really see a difference in gas mileage? Thanks for the response!
I get 20 mpg. Header, intake, throttle body spacer and high flow muffler add noticeable power to the 2.5L. A turbo set up does wonders on it though.

turbo jeep - YouTube
01-11-2013 07:49 PM
MonsterFun78 i love my 4 banger!
It's all about the set up.
Mine.....4.0 TB, injectors, K&N cold air intake, waggy axles, SOA, 4:11 gears, Detroit lockers in both axles, SOA, 36x13.5R15 IROKS



Attachment 197031



Attachment 197032
01-11-2013 08:28 AM
krisbman
Quote:
Originally Posted by Rubicondon53
Bruce Lee? We depend on Bruce Lee for wisdom? Jeeeeeeze!!! I asked my fourth grade teacher, " if we don't tell people that they are poor, then how would they know they are poor?" I got sent to the principals office for being a wise ass, received 5 cracks, and sent back to class...no wonder the cultural revelation of the late 60s happened... and now, you quote the great profit Bruce Lee? LOL!! actually the 4 cylinder engine is better suited for the TJ as it performs a bit better on trails, and contributes to the overall "balance" of the vehicle.. The 4.0 I6 is actually a compromise that was utilized to satisfy Americans thirst for speed and horsepower..
Still thirsty
01-11-2013 07:48 AM
Rubicondon53 Bruce Lee? We depend on Bruce Lee for wisdom? Jeeeeeeze!!! I asked my fourth grade teacher, " if we don't tell people that they are poor, then how would they know they are poor?" I got sent to the principals office for being a wise ass, received 5 cracks, and sent back to class...no wonder the cultural revelation of the late 60s happened... and now, you quote the great profit Bruce Lee? LOL!! actually the 4 cylinder engine is better suited for the TJ as it performs a bit better on trails, and contributes to the overall "balance" of the vehicle.. The 4.0 I6 is actually a compromise that was utilized to satisfy Americans thirst for speed and horsepower..
01-11-2013 07:30 AM
sevenservices I'm going to quote Bruce Lee on this one for the 4cyl jeep owners lol.

"Until you can live without comparison you truely will not know what is right for you"

Thinking that way, is a 4cyl really that bad? Compared to what? An inline 6 or not having a vehicle? Good and Bad are simply based off decisions make that involve comparisons. We choose things to compare to make things seem better or worse. Nothing is better or worse than anything else if you can avoid comparison.

So, without comparing... does the Jeep work for you? If your always dissapointed with lack of power, look into a bigger engine. If it works just fine, stop comparing and hit the trails with a smile.
01-11-2013 07:10 AM
efm-7 I have a Pentastar now and to be honest, I miss the torque characteristics of the 4.0... I understand all the rage about inline-6 motors now haha. While all those HP are nice, im spending most of my time making quick decisions going slow than passing people on the highway.

I can only imagine how disappointed TJ drivers were when the JK wranglers just came out with the 3.8 haha
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