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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 04-28-2008   #1 (permalink)
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Default installed new frame rails 1967 Mustang fastback

ok well today i got them all in, and everything is lined up perfect down to the T and my question was, that the original frame rails were put oonto the car from factory tack welds i could find the first solid weld when replacing them, so what i did is where the new one piece rail was supposed to attach to the rocker i drilled a 3/8 hole every inch and tack welded them in place just like it was from the factory this weekend my friend that is a professional welder is going to come behind me and well along the outside edge of the flaps that touch the rocker, just wondering if that is overkill or a good idea, i dont doubt my welds but his is alot prettier and 100% perfect and mines not, i would feel much safer if it was done to me but i just wanted to see what yall thought
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Unread 04-29-2008   #2 (permalink)
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It sounds good to me. Your fill welds should be enough, especially with 3/8" holes to work with. The fill welds also look better than the lap welds. BUT, . . . more is peace of mind.
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Unread 04-29-2008   #3 (permalink)
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luvme4thamoney, I am also trying to replace my frame rails. How did you do it? As far as keeping the car up off the ground and everything.
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1967 Mustang Coupe
L6 / 3.3L / 204CI - boiled, bored 0.040, master rebuild kit (complete)
Getting new rear frame rails and trunk pan
Front frame rails, floor pan, and firewall (complete)
Quote:
Originally Posted by smokeshow View Post
6 cylinders * pi * (3.68/2)^2 * 3.126 = 199.5ci (original)
6 cylinders * pi * ((3.68 + 0.040)/2)^2 * 3.126 = 203.85ci (bored)
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Unread 04-29-2008   #4 (permalink)
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first before anything was lifted off the ground or cut i ran a 1inch pipe from left to right from inner rocker to inner rocker , then i had one going from the rocker up to the roof meets the window on the other side, did that to both sides it made and X with a line underneath it , you get what im saying, i used a laser lever behind the car to get it exactly level and to make sure it would stay level, after everyting was dropped like rear end and suspension, i took lots and lots of measure ments on where stuff was and how far apart they were, since i was replacing the trunk floor to that was all cleared out the way, i held the car up with jack stande and the very end of the rocker i used small metal shims to get it perfectly level, i installed the trunk floor first ibefore welding it in place i ran some bolts throught the back of it attaching it to the car to the original bumper bracket holes so that it would stay in its correct place and i held the front up with ratchet straps so i could adjust the height, there are slots underneath the trunk floor where the frame rails rest in, before welding the shock cross member to the frame rails i put the back part of the rail in its slot under the trunk and used a sheetmetal screw that i ran up through the rail and into the trunk so it would stay in its correct place then i got the frame rails in it correct poistion from my measure ment on the rocker panel and put 3 sheetmetal screw in the front part to secure it in its correct place, once i had that done on both side,(checking my levelness the entire time, i put the shock cross member and tack welded it in place from the bottom, then i unscrewed everything and welded the crossmember fully to the rails, i spray rubberized undercoating inside the channel of the rails and on top of the shock cross member once installed you will never be able to get to it to protect from rust ,make sure that the front section of the frame rails all the points that are supposed to touch the rocker are touching the rocker and not leaning one wayh or the other, there is pretty much a set groove in the trunk floor that the rails follow, once the cross member was welded up i put it back in the car with the screws to hold it in place, and welded the crap out of it, thats pretty much where i am now if you would like me to send you pics let me know, once everything was welded in i cut out the tubing that kept the car square


also i have never done this before i dont know if what i did was overkill or not but it just seemed easier to me because i did this all by myself, i would defently try to get some help but i also went to a 3 years school in auto body, collision and repair and have a degree in it,im only 24 years old but ive never restored an old car im kinda testing my skills because i know i can do it with some advice from people with stuf i dont know,
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Unread 04-30-2008   #5 (permalink)
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Congrats, you should be proud. Do your research (talk to those with experience), use your mechanical sense and those learned skills and you'll be just fine. Also, working alone in many ways is a good thing. It's all on you . . . Good or Bad. When it's good, It's REAL good.

Steve in California
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Unread 04-30-2008   #6 (permalink)
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thanks alot im trying to get some pics up so i can show how my progress is coming along, i bought the car from wisconsin and i live in mississippi so you can imagine what kind of shape it was in but i love it
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Unread 04-30-2008   #7 (permalink)
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Thanks for that. I enjoy looking at "progress pics" of projects. It's a visual description of what you did. It also helps others who may decide to do that project. Share the fun.

That's interesting you got it from Wisconsin. Last year I picked up a car in Wisconsin ('33 Ford 2dr sedan). That will be my next project, when my 67 coupe is finished.
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Unread 04-30-2008   #8 (permalink)
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here is some photos ill get some more ,but i do not have photos with all my braces welded in there my digital camera was in my girlfriends truck and i ended up taking the pics with a throw away camera but pretty much everything else i have , i gotta along way to go but its starting to look like a car from the inside, i also have 1 piece floor brand new fenders, new hood, new trunk and alot of other stuff but i need to replace some more panels in the front before anything else goes in, the torque boxes and the front floor supports are next i will have pics shortly


bradsalex did that help you out any or confuse you
Attached Thumbnails
installed new frame rails 1967 Mustang fastback-pict0549.jpg  installed new frame rails 1967 Mustang fastback-pict0361.jpg  installed new frame rails 1967 Mustang fastback-pict0383.jpg  installed new frame rails 1967 Mustang fastback-pict0418.jpg  installed new frame rails 1967 Mustang fastback-pict0426.jpg  

installed new frame rails 1967 Mustang fastback-pict0547.jpg  
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Unread 04-30-2008   #9 (permalink)
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oh here is one of the trunk floor before i started after taking all this old rusted stuff out its hard to beleive that the car would even hold up its own weight i was shocked with the stuff i saw that was completely rusted through
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Unread 05-01-2008   #10 (permalink)
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Thanks for sharing. I admire your ambition. Try not to lose that enthusiasm and the project will move along nicely.

Also, to help with the "Signs of progress", take the time to undercoat/paint the areas you replace immediately. Remember, MIG welding starts to oxidize as soon as you weld it (CO2). So to prevent dealing with the surface rust later, protect it soon after welding. It also looks better and gives you a greater feeling of accomplishment.

Steve
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Unread 05-02-2008   #11 (permalink)
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yea i did i dont know if you have noticed in some of the pics there is like a black brown tint on the new metal is the rust and metal sealer i use its the same brand as my primer, i plan on undercoating the entire bottom with like hurculiner or something like that, ill have more pics but you can see that stuff real good on the new rails i think this is before i sprayed my welds
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Unread 05-03-2008   #12 (permalink)
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Thanks for giving me hope! My 68 Coupe is a Kentucky car & I thought that it might be too far gone. After seeing what you have done, my floorpans and left front rail don't seem so bad. Keep the pictures coming. Many of us need the motivation you are providing.
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Unread 05-03-2008   #13 (permalink)
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let me find the pics of the piece i cut out its kinda scary looking but what keeps me motivated other than this is the car that i have wanted ever since i knew what one was is that not what i have to do to it now its was it is goin to be when i get done , ive just been taking my time doing everything at a pace so that i dont get burnt out and also the $14,000 price tag on a new shell and i think about how much ive got in mine, i would love to have a new shell but i cant afford one and now that im doing it all myself i dont have to worry about what someone else has done and i know its right
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Unread 05-03-2008   #14 (permalink)
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this is what is looked like after i cut it out looks like a nightmare, tetnus shot waiting to happen
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Unread 05-03-2008   #15 (permalink)
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Amazing! Simply amazing! I gotta get started.
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