If i cut the frame in half to removerust will the frame shift

Stock FSJ Tech Area
Post Reply

Topic author
candymancan
Posts: 3670
Joined: Tue Mar 22, 2016 11:32 pm

If i cut the frame in half to removerust will the frame shift

Post by candymancan »

As the title says.. the frame on my Jeep where the shock and engine mount are.. is realllly bad rust wise.. so bad its gotten thin and cracked on both sides of the shick and engine mount on the drivers side.. and rusted a big hole on the passenger side.

Thankfully the cracks only go up hakf an inch into a favtory hole so its like you would do to cracks and drill em out.

There isa 88 inam the jy thats got a really good frame..

I live ina townhouse and dont have the funds or means to store a frame and replace it so ive had to cut out sections and replace them.

I want to remove the shock mount and engine mount ( supporting the engine with some wide wood and a jack on the oil pan ?

And then cut the frame out on both sides.. or at least cut out the front plates of the frame leaving the top on... Would the frame shift if i do this ? I know it wont shift cutting out half of the boxed in frame.. but i need to replace the whole box..

So im not sure how to go about doing this...

Any advice would be appritiated.. i need to fix this i cant keep the frame in this condition its that bad.
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)

mx71
Posts: 246
Joined: Wed Mar 28, 2018 8:20 pm

Re: If i cut the frame in half to removerust will the frame shift

Post by mx71 »

Yes. Make a jig,

Topic author
candymancan
Posts: 3670
Joined: Tue Mar 22, 2016 11:32 pm

Re: If i cut the frame in half to removerust will the frame shift

Post by candymancan »

explain ?
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
User avatar

tgreese
Posts: 7176
Joined: Fri Jun 08, 2012 6:31 am
Location: Medford MA USA

Re: If i cut the frame in half to removerust will the frame shift

Post by tgreese »

Weld on outriggers to hold the rest of the frame in alignment before you cut out the rusty section. If you just cut it out, it will move. Not good.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.

Topic author
candymancan
Posts: 3670
Joined: Tue Mar 22, 2016 11:32 pm

Re: If i cut the frame in half to removerust will the frame shift

Post by candymancan »

Well what if i just cut out one side at a time ?. like cut out the outside by the shock mount weld in the donor peice.. then cut the side by the engine mount and weld that in
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
User avatar

Stuka
Site Admin
Posts: 11806
Joined: Thu May 12, 2011 5:53 pm
Location: CA
Contact:

Re: If i cut the frame in half to removerust will the frame shift

Post by Stuka »

If you aren't cutting that section in half, then it should be ok. But if you are replacing an entire piece at one time, you will have to weld on some supports to keep things in position.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ

Topic author
candymancan
Posts: 3670
Joined: Tue Mar 22, 2016 11:32 pm

Re: If i cut the frame in half to removerust will the frame shift

Post by candymancan »

Okay. Ill just one half at time then.. Maybe when i cut the outside iff and get a better look imside it wont be (as bad) abd i can just knock off the flakey stuff.. cut the crack off and weld s little peice on it and paint it all with rust reformer and weld the donor peice on and be done
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
Post Reply