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Unread 09-03-2014, 05:20 PM   #1
Jeepkid315
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2014
Location: Ford Cliff, Pa
Posts: 9
97 frame swap

I have a 97 tj and I need to do a frame swap. The new frame has 2.5 L motor mounts. My jeep has a 4.0. Does anyone have any info that may help me with this swap. Thanks.

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-JRRJR
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Unread 09-03-2014, 05:45 PM   #2
Jeepsr4me
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Join Date: Dec 2004
Posts: 5,174
Gonna have to cut the engine mounts off and re weld... Or find a 4.0 frame... I have one but we a long ways apart...
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Unread 09-04-2014, 07:57 PM   #3
682bear
Registered User
1998 TJ Wrangler 
 
Join Date: Apr 2010
Location: Georgia
Posts: 57
I just finished a frame swap on a '97 back in May... I had the same issue, I was putting a 4 cylinder frame under a 6 cylinder jeep.

I cut the engine mounts off both frames, being careful to not cut into the new frame, and being sure to not ruin the 6 cylinder mounts...

They have to be located very carefully when you go to weld them back in. Also, the mount for the steering shaft will have to be cut off and moved. I used the steering shaft and bracket off the old frame and located and welded it to the new frame. The bracket that is on the 4 cyl frame will be in the way of the 6 cyl engine mounts.

When I did my swap, I lifted the engine, transmission, transfer case, and driveshaft off the old frame together... then when I went to locate the engine mounts on the new frame, I bolted them to the engine, set the entire assembly in place, connected the driveshaft, and bolted the trans mount to the skid... then set the engine and mounts down onto the frame. This allowed me to use the drivetrain as a 'fixture' to locate the mounts. I tacked the mounts, unbolted the engine, trans mount and driveshaft, then lifted the drivetrain back out so I would have room to fully weld the mounts in...

-Bear
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