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Welding the shock towers

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Old Dec 5, 2006 | 11:39 AM
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Default Welding the shock towers

While gusseting the lower A arm mounting points I got a good look at how the shock towers are welded to the frame and it was scarry.



I wanted to reweld the complete seam between the tower and the frame so first you must clean the entire area, I use a wire wheel and a grinder to get as much as possible out of the area, no paint allowed. I then make the first pass to heat the area and then hit it with shop air to blast the paint and grease out of the seam. I really find hitting it with shop air really helps, even puts out the small fires.

I weld parallel to the seam, weld all holes closed and you will find a big hole in the corners, up to ¾ inch hole. Anyway I weld parallel to the seal then stick across it vertically for about an inch overlapping the welds.

I would then again run beads parallel to the seam and fill everything in.

Later when it cools I grind the whole area for looks, prime, rockguard and then paint. I have them primed now and ready for rock guarding. The rock guarding gives a nice coverage, is a hard thicker finish that gives a nice appearance once painted.

I also run a big spreader bar from the cross shafts to prevent flexing
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Old Dec 5, 2006 | 12:07 PM
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In another thread were talking about Vetts appearing to be leaning.My thoughts were bent shock towers(upper coil spring mount)due to being hit in the front end.Now after seeing how poor the welding is it looks as if things could be bending or changing due to weld fatigue also.
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Old Dec 5, 2006 | 12:28 PM
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I weld parallel to the seam, weld all holes closed and you will find a big hole in the corners, up to ¾ inch hole. Anyway I weld parallel to the seal then stick across it vertically for about an inch overlapping the welds.

I would then again run beads parallel to the seam and fill everything in.

Later when it cools I grind the whole area for looks, prime, rockguard and then paint. I have them primed now and ready for rock guarding. The rock guarding gives a nice coverage, is a hard thicker finish that gives a nice appearance once painted.

I also run a big spreader bar from the cross shafts to prevent flexing[/QUOTE]


Looking good Norval, but now you are going to have to drill some more holes to make up for all the weld material you added !!

Jeff
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Old Dec 5, 2006 | 12:59 PM
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Originally Posted by DWncchs
In another thread were talking about Vetts appearing to be leaning.My thoughts were bent shock towers(upper coil spring mount)due to being hit in the front end.Now after seeing how poor the welding is it looks as if things could be bending or changing due to weld fatigue also.
No all our vets seem to have this lean. High in the right hind and low in the left front. Normal for most of us.
Here I go talking like a horseman. LOL
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Old Dec 5, 2006 | 01:13 PM
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Looking good Norval, but now you are going to have to drill some more holes to make up for all the weld material you added !!

Jeff
My holes in the block went from 4.250 to 4.5 but the stroke did increase .250 as did the rod length.
If 540 blown cubic inches can't move a little extra weight I will just give up.
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Old Dec 5, 2006 | 10:13 PM
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looks good, i never thought about reversing the the weld pattern....do you surface grind the first weld for a smoother contour? or just wire brush it and go right over it?.... i could probably implement that technique on my hot rod project....thks bob
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Old Dec 6, 2006 | 07:45 AM
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Originally Posted by bobs77vet
looks good, i never thought about reversing the the weld pattern....do you surface grind the first weld for a smoother contour? or just wire brush it and go right over it?.... i could probably implement that technique on my hot rod project....thks bob
I don't brush or grind anything. I am using mig with gas so there is no flux to chip. I just run the welded hotter for the heavier passes.
Everything is ground and primered. It looks smooth now and I am ready to rockguard this section of the frame.
The rockguard goes on really nice, gives a good surface and I paint gloss black over that once it has dried.
I believe in welding hot and fast.
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Old Dec 6, 2006 | 09:05 AM
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Originally Posted by norvalwilhelm
My holes in the block went from 4.250 to 4.5 but the stroke did increase .250 as did the rod length.
If 540 blown cubic inches can't move a little extra weight I will just give up.
You have demo'd a fair knowledge of physics here,.....

start drilling damnit.....

must be another .00000001 et there......


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Old Dec 6, 2006 | 09:39 AM
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Originally Posted by mrvette
You have demo'd a fair knowledge of physics here,.....

start drilling damnit.....

must be another .00000001 et there......


I'm not interested in et Gene. I just like something to do. I get bored sitting in the house. I can't ride or shoe all the time so I fill in my extra time with working in the shop and that means working on the car. While the engine is out I might as well do everything I can think of to the engine bay. The firewall has been cut, moved a section back, reglassed and repainted, looks stock.
It is a long winter and I have lots of time so I might as well do anything that I can think off.
Honestly Gene I would give up the car before I would give up my horse. I have more money invested in the horse then in my car even with it's $20,000 motor.
The horse is always glad to see me, even calls to me as soon as I show up at the barn. I have yet to see the car make any response to my appearance LOL
No give me a good horse any day over a chunk of cold steel.
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Old Dec 6, 2006 | 09:47 AM
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are the welds gonna stay like that?
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Old Dec 6, 2006 | 11:40 AM
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Originally Posted by Twin_Turbo
are the welds gonna stay like that?
No Marck. Once I am happy with the coverage I grind everything down to a smooth finish, prime it, fix with bondo any pits or blemishes, reprime and rockguard and paint.
I won't leave anything that rough on the car. It must blend, look original. I don't to bubba work.
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Old Dec 6, 2006 | 11:49 AM
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Why didn't you just lay down a nice clean bead and leave it at that? Much less work, no grinding...and how are you going to smooth it out, at the edges you will have to grind into the original frame to blend in the welds, now you have a very large weld bead. I don't see how this helps at all.
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Old Dec 6, 2006 | 12:37 PM
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Originally Posted by Twin_Turbo
Why didn't you just lay down a nice clean bead and leave it at that? Much less work, no grinding...and how are you going to smooth it out, at the edges you will have to grind into the original frame to blend in the welds, now you have a very large weld bead. I don't see how this helps at all.
Sure I could have laid down a single heavy bead but I wanted to blend the entire area. I also thought about welding the joint and then strapping part of it but decided to build the area up into a nice radius and then grind it making the original joint dissappear.
A simple single pass is too easy LOL]
I will have to rock guard it and then take another picture.
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Old Dec 6, 2006 | 01:00 PM
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I hate grinding welds..that's why it'll look good smoothed...I have to admit though, I blended the very same area

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Old Dec 6, 2006 | 01:22 PM
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Originally Posted by Twin_Turbo
I hate grinding welds..that's why it'll look good smoothed...I have to admit though, I blended the very same area

That's a nice clean look Marck. That must be an early picture since I don't see the tube for the steering shaft to run through the crossmember. Also you make a cut for the dry sump pump.
I would love to go dry sump but with a 4 inch blower belt it pretty much takes up all the room.
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Old Dec 6, 2006 | 01:25 PM
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Yes, rack is not mounted, no hole in the crossmember, no front frame extention and a rollcage...I was playing with the coil over position there
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Old Dec 6, 2006 | 05:01 PM
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Originally Posted by norvalwilhelm
I wanted to reweld the complete seam between the tower and the frame so first you must clean the entire area, I use a wire wheel and a grinder to get as much as possible out of the area, no paint allowed. I then make the first pass to heat the area and then hit it with shop air to blast the paint and grease out of the seam. I really find hitting it with shop air really helps, even puts out the small fires.
Use a torch to pre-heat the area. No contaminated base weld bead and you can easily bake the area as long as needed to eliminate oil - just keep at it until it stops smoking. Don't need to nuke the area, just get it hot enough to smoke! The clean up that follows will be easy and very, very obviously more complete. Also, that first bead will go down nice enough to bring tears to your eyes.
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Old Dec 6, 2006 | 06:11 PM
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With that much welding done on the frame, I'm just curious if you've considered annealing the area to relieve stress.
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Old Dec 6, 2006 | 06:44 PM
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I just layed down a clean fillet weld in the first pass and then overlayed that with a weld to smooth it out. Im not clear why so much bead and heat?. If the stress encountered so far hasnt cracked or deformed the base metal what's the point beyond a fillet?
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