Question for all........ - 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 > Question for all........

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitIntroducing MONSTALINERô UV Permanent DIY Roll On Bed LineFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 02-06-2002, 11:22 AM   #1
nuclear ape
Registered User
 
Join Date: Feb 2002
Location: British Columbia, Canada
Posts: 21
Question for all........

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.

Thanks

nuclear ape is offline   Reply With Quote
Unread 02-06-2002, 12:07 PM   #2
Kev
Master of the Obvious
 
Kev's Avatar
 
Join Date: Jul 2001
Location: Central Utah
Posts: 689
Get the 4.0; you will enjoy the power on and off the highway and mine gets ~18mpg on the highway.
__________________
"AN ARMED SOCIETY IS A POLITE SOCIETY"

"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
Kev is offline   Reply With Quote
Unread 02-06-2002, 12:37 PM   #3
QueenYJ
Registered User
 
Join Date: Jan 2002
Posts: 32
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
QueenYJ is offline   Reply With Quote
Unread 02-06-2002, 12:56 PM   #4
bobznew
Registered User
 
Join Date: Nov 2001
Location: new orleans, la
Posts: 60
4.0 all the way.

Don't worry about gas; it still gets GREAT mileage for an engine its size.

Plus, the 4.0 is so much better for new mods (bigger tires, etc.)
__________________
'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!
bobznew is offline   Reply With Quote
Unread 02-06-2002, 01:30 PM   #5
Dan Morera
Registered User
 
Join Date: Nov 2001
Location: Costa Rica
Posts: 187
I got an YJ 88 4.2 and it makes 20 mpg in the highway. 14.3 mpg downtown
__________________
YJ Sahara 88, 258 I6, BA/10
2.5" Susp. Lift (Aprox.), 1" Shackles 31x10.5" Cooper
Dan Morera is offline   Reply With Quote
Unread 02-06-2002, 03:31 PM   #6
AllanAlxndr
Registered User
 
Join Date: Nov 2001
Location: Peoria, Arizona
Posts: 892
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...

Allan
__________________
***What do I know, I just cause Problems***

*'90 Wrangler*
*4 Banger*
*6" of lift, (4" suspension, 2" body)*
*33" ATs on Outlaw II's*
*Pioneer DEH3500/CD deck*
*1800WATT Amp w/ Custom Box*
*2 - 8" Rockford Fosgate HEs*
*Cobra 18WXSTII w/ 4' Firestik Antenna*

Member of Arizona Virtual Jeep Club
AllanAlxndr is offline   Reply With Quote
Unread 02-07-2002, 04:32 AM   #7
FLYBYU
Registered User
 
Join Date: Jan 2002
Location: Saskatoon, SK. Canada
Posts: 7
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
FLYBYU is offline   Reply With Quote
Unread 02-07-2002, 04:46 AM   #8
highway jeeper
Registered User
 
Join Date: Jan 2002
Location: Lisbon, CT
Posts: 34
I own a 2000 TJ and 87 YJ - both have the I6 engine. My neighbor has a 4 banger, and I can only tell you that he wishes he got the 6

The mileage sortta suck on either one. I drive 100 miles a day. Don't let anyone kid you on the mileage - it ain't great, but you won't see too much difference in the 4 and 6.

If you want gas mileage go with VW otherwise, suck it up, get a 6 move forward.

MP
highway jeeper is offline   Reply With Quote
Unread 02-07-2002, 05:02 PM   #9
bobznew
Registered User
 
Join Date: Nov 2001
Location: new orleans, la
Posts: 60
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!
bobznew is offline   Reply With Quote
Unread 02-08-2002, 11:58 AM   #10
RCHavok797
Registered User
2005 LJ Wrangler 
 
Join Date: Jan 2002
Location: Oxford, CT
Posts: 2,434
Definetly go for the 4.0L. The gas mileage isn't much better with the 2.5L if at all and the performance you get with the 4.0L far out weighs any mileage benefits you might get with the 2.5L.
__________________
2005 LJ Impact Orange 4.0L Automatic (Tigger) - new ride
1991 YJ Sahara 4.0L Automatic
1978 Dodge Lil Red Express - work in progress
RCHavok797 is offline   Reply With Quote
Unread 02-08-2002, 04:26 PM   #11
NaeKid
JF Administrator, eh?
 
NaeKid's Avatar
1988 YJ Wrangler 
 
Join Date: Nov 2000
Location: Calgary, AB
Posts: 6,879
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
  • From street to trail, '88 YJ on 38" tires does it all well
  • Silver 2006 TJ Unlimited, zombie ready as the daily-driver
  • a Kawasaki KLR650 DualSport bike

- - - - - - -TEOTWAWKI- - - - - - -


NaeKid is offline   Reply With Quote
Unread 02-08-2002, 04:46 PM   #12
ebhub
Registered User
 
Join Date: Feb 2002
Location: Boston
Posts: 72
Go with the 4.0. The 2.5 sucks on the highway even stock.Tons of aftermarkrt parts for power too!
ebhub is offline   Reply With Quote
Unread 02-10-2002, 01:48 PM   #13
NOVA Jeeper56
Registered User
 
Join Date: Jan 2002
Posts: 47
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,
bumpers/brush guard
(used to be known as BiggMike56)
NOVA Jeeper56 is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





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.