CJ to YJ Frame - 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 CJ Forum > CJ to YJ Frame

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineDan's Old as Dirt Birthday Sale!GEARSHADE Pocket Tops in stock and available at ROCKRIDGE

Reply
Unread 07-25-2007, 07:39 PM   #1
MDCJ
Registered User
1985 CJ7 
 
Join Date: Apr 2007
Location: Maryland
Posts: 64
CJ to YJ Frame

I am doing a YJ body swap and have recently found out through some good advice on the forum that my frame is not worth repairing. If I were to get a YJ frame, what mods would I have to make for the engine, axels, tranny, gas tank etc..? Thanks in advance.

MDCJ is offline   Reply With Quote
Unread 07-25-2007, 07:43 PM   #2
supraman1990
Registered User
1980 CJ5 
 
Join Date: Feb 2007
Location: Claremont, NC
Posts: 1,366
Probably very few to none. Seems to me like I remember reading that the frames between the CJ and YJ were nearly identical.
__________________
80 CJ5 in the process of a frame up resto
96% complete.
The little stuff will kill me.
On the back burner for college.
supraman1990 is offline   Reply With Quote
Unread 07-25-2007, 07:48 PM   #3
Bard
Registered User
1985 CJ7 
 
Join Date: Oct 2005
Location: The Granite State
Posts: 2,662
A couple of things, Make sure you get the YJ springs, if you are going to run your CJ front and rear ends, you will need to change the spring plates to 2 1/2 , CJ front is 2". YJ's use a different connection to the power steering box. Most everything else is straight forward. Someone must have a write up on this I would think.
__________________
85' CJ7 Laredo, 383 GM, Turbo 350, NP 203. SOA, 2" frame lift, 34" TSL swampers, Dana 30 open, AMC 20 w/ detroit locker, 4:10's, 1 Piece Mosers, 35" boggers to abuse when needed.
Bard is offline   Reply With Quote
Unread 07-25-2007, 08:10 PM   #4
MDCJ
Registered User
1985 CJ7 
 
Join Date: Apr 2007
Location: Maryland
Posts: 64
Thanks guys. Here is the link that BESRK gave me. What do you think? Let me know if you come across any write-ups on the YJ-CJ frame swap.

http://cgi.ebay.com/ebaymotors/1991-...spagenameZWDVW
MDCJ is offline   Reply With Quote
Unread 07-25-2007, 08:48 PM   #5
only in a jeep cj
Registered User
1986 CJ7 
 
Join Date: Jun 2001
Location: Mobile, Alabama
Posts: 4,074
nope nope nope! The frames aren't the same at all. Its the tubs that are close. If you put a YJ tub on a CJ frame, you alter the rear most mounts and the ones in front of the rear tires. For CJ drivetrain to fit a YJ frame...that a different story. The YJ frame is 4 inches wider, taller in the front grill mount, has wider and longer springs, different brake, fuel, and exhaust routing and tank side fill. Heres wht you do in your situation. Use the YJ tub unaltered on a YJ frame with YJ springs. Use the CJ motor, trans and t case and find a set of Scout or Wagoneer axles (these will bolt in to the YJ frame alot easier. The tailgate you run will determine CJ or YJ hard or soft top. Oh yeah, you should need a slight body lift to get the CJ front clip to fit the height of the YJ front frame mount. All of this is just an idea!
__________________
Ed

1975 CJ-6 304 T15 Dana20 30/44 3.73
1983 CJ-8 258 T5 300 30/44 3.31 Looking for full or half hardtop buy or trade
1986 CJ-7 Laredo 4.6 stroker T5 300 30/44 3.31
1986 TJ-7 Trail Jeep project in the works
2003 Inca Gold TJ Rubicon
only in a jeep cj is offline   Reply With Quote
Unread 07-25-2007, 10:07 PM   #6
jeepskate
Web Wheeler
1986 CJ7 
 
Join Date: Aug 2004
Posts: 4,700
only in a jeep pretty much nailed it...the frames are a good bit different and that extra width creates issues with tire clearance with the CJ axles. There's a good bit of info on this in a thread or two in the CJ forum over at jeepsunlimted.com that was posted within the last couple of months, so I'd suggest that you do a search over there.
__________________
'86 CJ-7 Laredo: 4.2,T-999,D300,D30/D44,'94 YJ tub, full cage, Shrockworks rockers, OYR corners, AC,cruise,restored seats,3 tops,2.5" Superlift,F-T shackle reversal, RS9000x's,35" Dunlop Mud Rovers.
'83 Scrambler: time & money pit under construction with parts from CJ's,YJ's,TJ's,FSJ's,GM,Ford,IH,Honda,Toyota and a whole lotta aftermarket & custom stuff.
http://www.jeepskate.net
jeepskate is offline   Reply With Quote
Unread 07-26-2007, 08:34 AM   #7
jeepwhore
Hair puller xtraordinaire
 
jeepwhore's Avatar
1984 CJ7 
 
Join Date: Jun 2006
Location: Kamloops, BC
Posts: 2,994
I posted some pics of a guy doing this in the JU thread jeepskate mentioned. It looks sketchy at best. Search for posts by user name "cjmike" and look through the threads I posted in to find thread. Might be easier than wading through all the threads that search gives you.
jeepwhore is offline   Reply With Quote
Unread 07-26-2007, 10:07 AM   #8
MDCJ
Registered User
1985 CJ7 
 
Join Date: Apr 2007
Location: Maryland
Posts: 64
Thanks a lot guys. Maybe I will try to find a decent CJ frame and go from there. Once a get past this, hopefully the rest of the swap will go okay.
MDCJ 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.