cracked frame |
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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Posted: 15 Apr. 2014 at 12:57am |
Well after a couple days of fairly hard offroading I managed to crack my Jeep's frame in the same place on both sides. (right behind the transmission crossmember) I plan to fishplate it back together. Has anyone else had their frame crack in this place? It looks like a weak spot imo with the front bodymount and transmission crossmember putting a lot of force on the same spot where there is also a large hole drilled through the frame.
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Oilleaker1
Member Joined: 06 Sep. 2011 Location: Black Hills, SD Status: Offline Points: 4406 |
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Are you sure your Jeep wasn't filmed in Rat Patrol? Wow. I've seen them bend just behind the front springs where the boxing ends. I've never seen one broken there. I've seen fish plates that are diamond shaped, and square plates welded top and bottom, but not on the vertical ends for flex. I would do a search on those recommendations before you weld her up. Your Jeep is now " Taxi Tested"! John
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Green Disease, Jeeps, Old Iron!
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garage gnome
Member Sponsor Member Joined: 12 Jan. 2011 Location: Western MA Status: Offline Points: 2834 |
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You were beating on it pretty good! That one hump you hit and did a wheelie off I'm sure didn't help.
Listen to what John said too. I've heard people say that before about the fish plates. |
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Nate
1953 3A, 1949 3A, 1947 2A, 1918 IHC Titan 10-20, 1905 IHC Famous, other hit n misses |
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johnnybravo
Member Joined: 14 Feb. 2008 Location: Glen Lyn, VA Status: Offline Points: 2075 |
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I have modified frames for hard use and maintain OE look. I will share my procedure with all. I take like area OE frame rails and match to area to be re enforced. I cut off the top flat by cutting the side about quarter inch from bottom of top flat. That leaves me am "L" frame side. I trim about quarter inch off the short leg of the "L" , I place "L" on the inside of the rail to be re-enforced, aligning all the bolt holes with bolts and stitch weld and then weld between stitches. Unlike fish plating this does show from the outside and is difficult to see from inside and several times stronger.
I have had good success with this procedure but others may have a different idea. Edited by johnnybravo - 17 Apr. 2014 at 2:02am |
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Ret. USAR-Vet, 6-GPW's,, 1-M38 w/M-100, 1-47 WO "Jeep" 4X2 Wagon, several ruff CJ2&3A's, 1-CJ3B,
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Schimms15
Member Joined: 17 Jan. 2011 Location: milwaukee, Wisc Status: Offline Points: 2953 |
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my trucks frame was so beat that i had to take it to a welder who used 3 frames to make one. i can snap a few shots of the fish plates this weekend but they are diamonds without any sharp corners. they round all the ends or flatten them the reason being the corner will build stress there. the guy who did the welding normally welds semi and dump truck frames so the willys frame was done correctly.
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46 2a
51 truck project named Karen |
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F Bill
Member Sponsor Member x 2 Joined: 05 Dec. 2005 Location: central Texas Status: Offline Points: 7752 |
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There will be an extra frame up in Stephentown available soon if it helps. It is the one on the column shift parts jeep if you remember that one. I know the rear section was pretty good , I don't remember what sort of shape the rest was in......I am taking all the CS stuff off and tossing the rest in the near future. I'll have a set of axles extra too possibly.
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If you haven't checked out the tech FAQ section, go to:
http://www.thecj2apage.com/forums/tech-faq_forum57.html for a lot of great stuff you need to know!! |
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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Back when I first got my Jeep I took the front half of a 3b frame and the rear half of a 2a frame to weld up my current frame using oval fishplates to hold it together. seeing as those welds and plates have held I will probably do the same thing with these cracks, maybe I will grind the old fishplate off and weld on one long one instead of two short ones.
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BillF
Member Joined: 02 Oct. 2005 Location: Hillsborough NH Status: Offline Points: 1133 |
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might be time to locate a new frame
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1952 m38
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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You might be right, I just want to try and save this one before I have to spend the money on a new one.
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iron mike
Member Joined: 02 Mar. 2014 Location: california Status: Offline Points: 1 |
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clear away the area around the damage,remove everything attached to the frame ,wire wheel it super clean, then using no more than 350degrees,heat it up and clamp it back in place using aa strong straight edge of heavy square tubing as a clampling edge.(2x3x3/16thick) then vee out the crack after it's realigned and weld it with a good quality 70xx wire or rod.full penetration weldining.make sure the back is super clean, then weld up the back with a cover pass.as long as the metal is all there you should be ok.you can grind it down and use a blending wheel to make the repair disapear..
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"in a dog eat dog world,i'll have mine medium rare"
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mikec4193
Member Joined: 23 May 2009 Location: Malta NY Status: Offline Points: 1143 |
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Hey Erik
I cringed when I saw those pictures....I wish you well with getting it fixed...it just solidfies my motto of never four wheeling mine...mine will be pavement pounder as long as I own it...I would be heart sick if this was my PILE...I know it was designed to be off roaded but darn...turning into my driveway with all 4 wheels facing the same direction....that is where I am at right now...
Good luck with the fixing up process.
MikeC
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I am the squirrel....
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BillF
Member Joined: 02 Oct. 2005 Location: Hillsborough NH Status: Offline Points: 1133 |
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It took over 60 years for that frame to crack, and it was made out of two frames as it is. Taken the off road is not going to really hurt them.
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1952 m38
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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It was also kinda a case of me beating on it too hard to. Anyway, I finished welding the frame back together. I took off the old fishplate and welded on a single 18" one instead of two small ones. The ends are 3" diameter circles.
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52 M38
Member Joined: 26 Nov. 2012 Location: New England Status: Offline Points: 1286 |
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What crack? Looks great.
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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Thanks!
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mikec4193
Member Joined: 23 May 2009 Location: Malta NY Status: Offline Points: 1143 |
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Hey Erik You do quick work for sure...I see no tub on this chassis...this rebuild take me weeks to complete....what is you trick to getting all this work done so fast???...just wondering out loud... MikeC
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I am the squirrel....
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Tin Badge
Member Joined: 27 May 2011 Location: Clarksburg WV Status: Offline Points: 414 |
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That thing could take an RPG round now and just laugh it off. Glad to see your back in business!!!
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Family Motto "If its not broken lets take it apart and lose some of the pieces and then it will be"
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rrrrrrrrr9
Member Joined: 04 Apr. 2012 Location: western Mass Status: Offline Points: 424 |
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Thanks for the kind words. As far as doing quick work Mike I really don't, I just log a lot of hours and spend all of me free time working. For example I spent 8 hours today and 3-4 hours every weekday since Monday to get the frame fixed. No secrets involved except practice and and a cordless impact driver. This is my third or fourth time taking apart my Jeep to this level so all of the bolts come off easy now.
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