2.5 question (compatibility) - JeepForum.com
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 > 2.5 question (compatibility)

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineRubicon Express Suspensions from CCOR 706-207-4140Smittybilt Hard Tops @ Oconee Off-Road! 706-534-9955

Unread 05-29-2013, 05:27 PM   #1
Registered User
1993 YJ Wrangler 
Join Date: May 2011
Location: Flat Rock, Mi
Posts: 522
2.5 question (compatibility)

i have found a 2.5 used for a good price and want to rebuild it and put it in the yj.

the motor is from a 90 and it is tbi.

is the base motor the same as my 93? i will be putting my mpfi on it just want to know if the block and head are the same?

kingcat400 is online now   Reply With Quote
Unread 05-29-2013, 07:02 PM   #2
Wild Wheeler
jokerchief462's Avatar
1989 YJ Wrangler 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,847
Yes but there are some differences in the motor mount brackets. Keep your old motor and all attaching parts until the new one is installed.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

AF Jeep Club Tail #184
jokerchief462 is offline   Reply With Quote
Unread 05-30-2013, 04:08 AM   #3
Registered User
Join Date: Dec 2004
Posts: 4,585
Also check the oil pans... I know they changed from TJ blocks for YJs.. But I have put in 87 2.5s in a 99... Blocks all the same, its the external stuff and oil pans and oil pumps that are differnt.
Jeepsr4me is offline   Reply With Quote

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.