Best year for the I6? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-27-2014, 08:50 AM   #1
Jeeper
 
petercass88's Avatar
 
Join Date: Apr 2013
Location: Melbourne, FL
Posts: 531
Best year for the I6?

I might have the chance to pick up a cheap I6 with AX15 tranny. This would obviously set my 4BT plans back a bit but hey a cheap power bump is what it is :-D

Are there any I6 gurus out there that can throw some advice my way? I would like to stick with fuel injection instead of backing down to a carburetor.

Will the AX15 and I6 bolt right in to replace my 4 banger and AX5?

Can the wiring harness and computer plug right into my gauges?

Any additional concerns I should have or thoughts to consider?

Thanks!

__________________
95' YJ 4-Banger, 5" black diamond lift, Bilstein shocks, shackle reversal kit front and revolvers rear, 33 x 12.5 BFG A/Ts, Dynatrac D60 Axles front and rear, ARB air lockers front and rear, custom drive shafts, 3/4 ton break calipers, 10k LB Engo syth winch, 50" LED windshield light bar, black Monstaliner inside, Predator Green Monstaliner outside, marine speaker sound system, marine vinyl dash and seats. Many other little goodies!
Swap to a 4BT diesel in the future? Most likely.
petercass88 is offline   Quote Quick Reply
Old 01-27-2014, 02:59 PM   #2
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 3,546
Images: 6
The 6cyl and AX15 doesn't just "bolt right in". That would require new frame towers for the motor mounts as well as different driveshafts. The tach. isn't compatible from a 4 to a 6, so that would need changed. the other gauges are the same, but you need the CPU and the ECM for the 6cyl motor.

__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is offline   Quote Quick Reply
Old 01-27-2014, 03:05 PM   #3
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 3,546
Images: 6
Oh, and the best year for a 4.0L in a YJ is a 95, that's the first year they started putting in the H.O. motor. they are also available in the TJ's as well from 97 to 06. I believe the XJ from 94 to 99 had the H.O. motors as well. Not all of them were an H.O. motor though.

H.O. (high output) has a bigger throttle body on it, and a bigger exhaust manifold and down pipe, and has about 10% more torque and horsepower.
__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is offline   Quote Quick Reply
Old 01-27-2014, 03:11 PM   #4
Jeeper
 
petercass88's Avatar
 
Join Date: Apr 2013
Location: Melbourne, FL
Posts: 531
any particular way to know its a high output version if i find a 95 YJ, 97-06 TJ or 94-99 ZJ? Also, from redoing my dash i know that the tach, ODO, and idiot lights are all one piece. Should i seek out a YJ at the scrap yard and get that whole cluster?
__________________
95' YJ 4-Banger, 5" black diamond lift, Bilstein shocks, shackle reversal kit front and revolvers rear, 33 x 12.5 BFG A/Ts, Dynatrac D60 Axles front and rear, ARB air lockers front and rear, custom drive shafts, 3/4 ton break calipers, 10k LB Engo syth winch, 50" LED windshield light bar, black Monstaliner inside, Predator Green Monstaliner outside, marine speaker sound system, marine vinyl dash and seats. Many other little goodies!
Swap to a 4BT diesel in the future? Most likely.
petercass88 is offline   Quote Quick Reply
Old 01-27-2014, 04:29 PM   #5
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 3,546
Images: 6
The motors are hard to tell apart, If you see the side of the body, it will say 4.0L H.O. As long as the motor hasn't been changed. and its a 94-99 XJ, not a ZJ. ZJ was a grand Cherokee. That is 99 and newer.

Just the Tach. gauge is replaceable. it might unbolt from the dash as a 1-piece unit, but you can change the tach or speedo separately from that gauge cluster.
__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is offline   Quote Quick Reply
Old 01-27-2014, 09:02 PM   #6
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 10,123
Images: 5
ALL 1991 to 1995 YJ's have the 4.0L putting out about 181 HP... XJ also got the HO version in 1991 as the new engine.. prior to 1991 the power was around 175 hp.. hope that helps ya...

__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 04:09 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC