Hi, I am new to this page and jeeps. I am looking at buying a used jeep yj 1992-95, but I am not to sure what engine size. The 2.5 litre or 4 litre. I really like the power of the 4L but I like the gas mileage of the 2.5L. When I finally get a Jeep I will be using it for off-roading 2-3 times a week but also quite a bit of on road driving, so I am not too sure which engine I should get, Any and all help is greatly appreciated.
Get the 4.0; you will enjoy the power on and off the highway and mine gets ~18mpg on the highway.
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"We, too, born to freedom, and believing in freedom, are willing to fight to maintain freedom. We and all others who believe as deeply as we do, would rather die on our feet than live on our knees." FDR
Blue Jeep Club Member #4
92 Canyon Blue Wrangler YJ 4.0L - with some fun goodies
Ok...I have owned both and the ONLY reason I sold my first YJ was because the 2.5 was killing me. I had a mild lift and was running 33's on 4.11 gears which was fine offroad, the highway was another story. I got really tired of grandma and grandpa passing me in their 32 foot RV traveling down the interstate. That was with an airbox mod and performance exhaust too. Most importantly you need to understand that with the 2.5 you just can't drop a bigger engine in it and go on about your business. You also will need to replace or upgrade the rest of the drivetrain as well, no kidding. So to say it is cost prohibitive is an understatement which brings me to the moral of my story. Don't buy the 2.5 unless it's just for offroad or you will make the same mistake I did. Pay the extra $ for the 4.0 on the front end and have a Jeep you can always live with. It tore me up to part with my first Jeep but in the end there was really no other way. I will tell that you do need to have a very healthy respect for the 4-bangers when off road because they can
tear it up with the best of um.
93 4.0L YJ With lots of mods and goodies
I have a 2.5L engine in my Wrangler and I wish I would have went with the 4.0L beacause of the lack of power with the lift and Tires.
Eventually you will want a lift and bigger tires. I would go for the 4.0L if I were you...
__________________ ***What do I know, I just cause Problems***
Go with the 4.0, I get about 24-28 mpg on a good day which is really good for such a big engine. Try to find a Jeep with the High Output 4.0 in it, I love mine, nice and torquey like a diesel, holds it's own on the highway.
94 Jeep YJ 4.0L HO 5 speed
88 Nissan Pickup 2.4L Lowrider
67 Ford Fairlane 500
Let me explain what I mean by GREAT mileage. I get 20+ MPG on the highway, which I think is awesome mileage, compared to the other vehicles my family has owned - suburbans, Ford trucks, and the best of all, an '88 Grand Wagoneer (now there's a gas-guzzler!)
Jeeps weren't designed primarily for fuel economy. But for an SUV, I think you will be more than happy with the MPG the 4.0L gets.
'97 ZJ, 4.0L, Gibson Cat-back system, Daily Driver
'95 YJ, 4.0L, 3.5" BDS suspension lift, Boomerang Shackles, BDS Shocks, 33x12.50 TSL's, Lock-Rite in rear, No-Slip up front, Posi-lok, Warn XD9000i winch, and a ton of dried Mississippi mud!
With the right gearing, you can get amazing milage out of the 4.0 (or even the 4.2). I was able to get 24mpg on the highway with my Jeep before lifting it and putting the 33" tires on it. I was running 3.73 gears.
The plain 4.0 would normally come with horrible 3.07 gears, the better 3.53 gears, and the best 3.73 gears (towing package). If you can find a wrecked 2.5l YJ, steal its axles and you would have the awesome 4.10 gears!
Hello, my name is Vance and I am a Jeepaholic. Its better to be naked with your friends, than to be clothed with your enemies
Silver 2006 TJ Unlimited, zombie ready as the daily-driver
I suggest you go with the 4.0l. I have a 2.5 and am looking into a swap to a 4.0l. Not only is it under powered i get about 10m/gal in the city and about 12m/gal on highway and i have 31's. Out of my 15 gal tank i fill at about 125-135 miles
'94yj, rancho lift kit, 31x10.50 BFG mud's,intake,exhaust,wheels, warn 6000lb winch,lights,
(used to be known as BiggMike56)