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Old 01-07-2013, 09:42 PM   #1
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Are 4 Cylinders that bad?

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!

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Old 01-07-2013, 09:52 PM   #2
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Gas will probably be the same. However, the 6 cyl has more power. I have a 4 cyl and I have issues going slow up hill. Since I'm in LA I barely go through hills, so its pretty good in my area. can easily hit 90 in the highway on 33" and regeared. I honestly would take my 4 cyl again if I had to pick again.

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Old 01-07-2013, 09:56 PM   #3
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gotta love the torque of the 4 banger in 1st gear and 4hi, I did however have a straight 6 in my YJ and I loved it so I guess its preference. The straight 6 got me friends with the great New York State Police very quickly though
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Old 01-07-2013, 10:00 PM   #4
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I don't have any complaints about mine. There isn't anything you can do to get any more power. The gas mileage isn't really any different.
I have 1.75" lift and 31's on mine and average over 17mpg.
I'm in Delaware and its pretty flat here also
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Old 01-07-2013, 10:03 PM   #5
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I also have a 4 banger in my 2004 it does pretty good turning over the 33 x 12.50 BFG KM2's with stock gearing. I added a cold air intake and picked up close to 20hp with it.
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Old 01-07-2013, 10:06 PM   #6
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Quote:
Originally Posted by Frozenstar
I also have a 4 banger in my 2004 it does pretty good turning over the 33 x 12.50 BFG KM2's with stock gearing. I added a cold air intake and picked up close to 20hp with it.
Uhh 20hp, id like to see the dyno sheet
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Old 01-07-2013, 10:13 PM   #7
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Uhh 20hp, id like to see the dyno sheet
x2
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Old 01-07-2013, 10:17 PM   #8
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I have a 99 4 banger 35 Mickey Thompson Baja Claws 488 gears super 35 rear D30 stock up front locked front and rear. Ran Isham, calico, Big Bear, etc...no problems, no breakage. Jeep stalls before I break stuff. I love it in the rocks, not so much on the highway (up hill that is).
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Old 01-07-2013, 10:43 PM   #9
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I'm in Jax, so share your level ground. Had a very extended test drive in a '98 SE (4-cyl) 5-speed. I actually had to downshift to maintain 65 going over overpasses on I-295. These are "hills" (yeah right) that the 2.5 had trouble with, no trailer, no cargo, top up. Just me in the driver's seat.

Ended up in an '05 Sport (4.0) 6-speed. In retrospect, I absolutely made the right decision. Even risking the dreaded oil pump issue in the 4.0 in 2005-6, I think getting the 6-speed tranny was worth the trade.
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Old 01-07-2013, 10:45 PM   #10
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CAI's really do help the 2.4L DOHC 4 cyl engines !!! Because it's a car engine not a jeep engine. The 2.5 internal cam engine however gets no benefit to such bolt-on items but has way more low end torque than the 2.4L
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Old 01-07-2013, 10:47 PM   #11
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I'm in Jax, so share your level ground. Had a very extended test drive in a '98 SE (4-cyl) 5-speed. I actually had to downshift to maintain 65 going over overpasses on I-295. These are "hills" (yeah right) that the 2.5 had trouble with, no trailer, no cargo, top up. Just me in the driver's seat.

Ended up in an '05 Sport (4.0) 6-speed. In retrospect, I absolutely made the right decision. Even risking the dreaded oil pump issue in the 4.0 in 2005-6, I think getting the 6-speed tranny was worth the trade.
+1 I've had to downshift many times to get up hills, would love a 6 speed
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Old 01-07-2013, 11:03 PM   #12
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That's the kind of stuff I'm skeptical about, I'm not liking the regret that could come into play.
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Old 01-07-2013, 11:44 PM   #13
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If you like the jeep,get it. Jeeps are like guns, 30% what you have,70%user. The more you practice, the better you get. The best jeep I ever drove was while in the Marine Corps and it was a 4cyl. It went everywhere I needed to go. If you use it alot for 4 wheeling,you get very proficient. 6 cylinders come in handy,but the 4 cylinder is a great engine,just not that fast.
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Old 01-08-2013, 01:16 AM   #14
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Kinda wish I would have gotten a 6cyl, but alas.... I drove to the "Top of the World" in Laguna a few weeks ago, my 4cyl barely made it up Park Ave. But otherwise it's fine. Actually pretty reactive on the highway.
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Old 01-08-2013, 07:17 AM   #15
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The four cylinder is fine. I have two. You do have to shift on some hills but not that bad. I've had the six also and the comparison is not huge like a V8 would be. The six has more low end torque that is what is noticeable. I also have a cold air intake on my 2.5 that the PO had put on. Don't really notice any power difference but it is noisy and that alone is why it is coming off..
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Old 01-08-2013, 08:14 AM   #16
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I have a 4cyl and also live in fla. Like you stated, no hills here so not too bad. I have 36/12.5/16 sswampers and can run down i-4 (rarely) at 80mph (5th gear). Around town I start off in 2nd gear, unless the a/c is on, which I rarely run. True, gas mileage about same as a 6. Like you, I got a super deal on it and I couldn't pass it up.
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Old 01-08-2013, 08:57 AM   #17
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Quote:
Originally Posted by Frozenstar View Post
I added a cold air intake and picked up close to 20hp with it.
Total BS. That's almost a 20% increase in HP.

I own a 98 4-cyl and I'm fairly pleased. Like has already been said, they aren't a power demon on the highway. I can usually stay in 5th gear unless it's a long hill. Could I use more power? Absolutely. Am I frustrated or remorse about having the 4cyl? Nope. You just gotta understand that it wasn't designed as a highway vehicle. Off the road it is absolutely great.
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Old 01-09-2013, 10:35 PM   #18
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I forgot until reading Joel-C's post: when I couldn't get over an overpass without downshifting, I did have the AC on. There's no way that particular Jeep would've hit 80MPH with the AC on. Give it a couple hundred miles floored, level, and AC off, and it probably would've hit 80. That said, if you're looking at an around-town and/or off-road vehicle, the 4-cyl would be fine.

All that said - the ONLY real advantage of a 4-cyl is initial cost. You might get 1-2 MPG more, but over the life of the Jeep, resale would likely outweigh that. If initial cost is really important to you, a 4-cyl Jeep is still far better than nearly every other vehicle out there.
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Old 01-09-2013, 10:38 PM   #19
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Quote:
Originally Posted by geoffmarton
I forgot until reading Joel-C's post: when I couldn't get over an overpass without downshifting, I did have the AC on. There's no way that particular Jeep would've hit 80MPH with the AC on. Give it a couple hundred miles floored, level, and AC off, and it probably would've hit 80. That said, if you're looking at an around-town and/or off-road vehicle, the 4-cyl would be fine.

All that said - the ONLY real advantage of a 4-cyl is initial cost. You might get 1-2 MPG more, but over the life of the Jeep, resale would likely outweigh that. If initial cost is really important to you, a 4-cyl Jeep is still far better than nearly every other vehicle out there.
I think the four poppers actually get worse fuel mileage.
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Old 01-09-2013, 10:52 PM   #20
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My 4.0 is a dog. It's hardly faster than my motorhome. It has hardly enough power to merge on the freeway. Before you say "regear", I had 4.10s with 31s and it still sucked bad. I can't imagine getting a smaller engine, but then I also have a 4.6L V8, a supercharged 4.6L V8, and a 7.3L PSD.
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Old 01-09-2013, 11:00 PM   #21
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My 4.0 is a dog. It's hardly faster than my motorhome. It has hardly enough power to merge on the freeway. Before you say "regear", I had 4.10s with 31s and it still sucked bad. I can't imagine getting a smaller engine, but then I also have a 4.6L V8, a supercharged 4.6L V8, and a 7.3L PSD.
Mine used to be the exact same way. I took it into the dealer for a lifter tick and they replaced the lifters, cam and OPDA under warranty. There was a significant increase in power after that. It now has no issues merging on the freeway or climbing mountain passes. There's videos of me trying to climb a wimpy sand hill where all my buddies were making it up. I could easily make it now.

4 cylinders aren't THAT bad. but anyone who recommends one over a 6 cylinder is . Who wants less power to get the same mileage?
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Old 01-10-2013, 01:04 AM   #22
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Wasn't the 2.4 DOHC used in the pt cruiser???!!!! 'Nuff said.
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Old 01-10-2013, 01:09 AM   #23
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I dont know. My 2.5 i4 hits 70-75 no problem on the freeway. Do you really need to go any faster than that?
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Old 01-10-2013, 02:31 AM   #24
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I like the 4 banger for the fact you can say you did it with a 4 instead of a 6 or even V8.... I ran the Rubicon trail in one and every time I did an obstacle.... I would always yell "My 4 banger just did what your souped up 6 or 8 did" hahaha but don't get me wrong... I'd gladly take a 4.0 but people think they are gold and you do pay for them
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Old 01-10-2013, 07:34 AM   #25
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The 2.4 suits my needs alright, but a 4.0 would do the same and maybe a bit more. I got a 2.4 TJ after two XJ's with 4.0's and I would never trade back. The point is that it's still a bad ass vehicle, and as long as you don't mind staying in the right lane on the highway the 2.4 is great. Good luck man.
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Old 01-10-2013, 07:44 AM   #26
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Man everyone is making it seem like the 4 cylinder is unsafe on the highway... I have absolutely no problem getting up to speed or maintaining speed. I can cruise 70-75 all day long no problems at all. You might loose a little bit of doped going up an incline, but it's far from unsafe.

1.75"lift, 31"s, stock 4:11's and manage 17.5-18.5mpg.....
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Old 01-10-2013, 08:02 AM   #27
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Maybe this is just a case of the grass being greener on the other side, but I had a 6-cyl 2005 TJ (with the OPDA of doom issue) and I was always jealous of how few problems people report about the 4-cyl jeeps, again, it might be because less people have them to complain about them.
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Old 01-10-2013, 08:19 AM   #28
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I do 70-75 easy in my 4cyl. Hills don't bother me. But i don't drive like an a$$ either. I've never had a huge problem passing. Although i see others do it easier. Would love a 6cyl but still love my 4.
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Old 01-10-2013, 08:55 AM   #29
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I actually shopped around for about 2 months looking around for a "deal", around here most jeeps were over priced or were yellow...I hate yellow. (No offense to anyone). Yes, I was apprehensive of a 4cyl but after driving it I was convinced it fit my needs and the $ was right. It is what it is...a jeep. Don't need neck snapping take offs, 100 MPH on the hwy. I can cruise at 80mph, go up steep bridges in 3rd (4th if I catch the green light). Yeah, I would of bought a 6 for the same price, but that wasn't happening and I knew I would keep it for a very long time, so re-sell price wasn't even a thought.
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Old 01-10-2013, 09:05 AM   #30
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I had my 2.5L in soCal (Tehachapi), and commuted to Edwards AFB, which is a 2000' elevation drop. Going in to work. No problem. Coming home, I fought the elevation change AND usually a pretty strong wind. That sucked.

Going from Tehachapi to Bakersfield, which is nearly 3800' drop, it was even worse as the drop was steeper down 58.

All this was on 30's with the stock 4.10's and manual transmission. LOTS of downshifting.

Now that I'm out in Alabama, things are a bit better. Still have hills to contend with, but I'm regeared to 4.88 and 33's. I still have to downshift on longer or steeper hills, but it doesn't bother me too much. Around town, I absolutely love it. I just don't like driving on the highway for more than a few hours with the Jeep. Between the loud noise, higher RPM's, and mileage, I just feel beat up. Hoping to have a trailer soon.

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