Body flex

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808-dartGT

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It’s my first convertible 1964 dart GT, I put it on the lift while working on the brakes the other day. I noticed some body flex looking at the door gaps, I understand some flex is normal, but what is normal? Thank you
 
Did you lift it by the factory locations?


look in you factory service manual for the locations
 
Yes, they WILL flex when you lift them unless it's on a four post. Subframe connectors help to limit this, however.
 
mine flexed a little bit. when on the rotisserie , but I do have to admit I didn't have floor pans or trunk pan in it when I did that, I did have it braced in the doors and windshield area. popped it down on wheels and axles . aligned the doors to the rear quarters and took measurements and then put it back on and turned it upside down. Then I welded in the floor pan. I now have good door gaps, much better than when I bought it.
DSCF2456.JPG
 
Yes, they WILL flex when you lift them unless it's on a four post. Subframe connectors help to limit this, however.
It was 4 point frame lift, I understand engine and rear end hangs over posts so there’s some more weight hanging over than when it sits on its wheels
 
mine flexed a little bit. when on the rotisserie , but I do have to admit I didn't have floor pans or trunk pan in it when I did that, I did have it braced in the doors and windshield area. popped it down on wheels and axles . aligned the doors to the rear quarters and took measurements and then put it back on and turned it upside down. Then I welded in the floor pan. I now have good door gaps, much better than when I bought it.
View attachment 1715421164
That’s beautiful bottom!
 
It's a 55 year old unibody put together with pinch welds... waddaya want??? I took Herb McCandless' advice a several years ago and started using US Car Tools' stiffening kits when I built cars. I'm on the third one now. For a street car, a set of factory style torque boxes and the frame connectors really make a big difference! The parts are downright cheap, but the welding work is extensive. The rugs and seats have to be out for the subframe connectors, and you want to be damned sure that the car is straight when to put them in because it would be hell to straighten afterwards.
 
It's a 55 year old unibody put together with pinch welds... waddaya want??? I took Herb McCandless' advice a several years ago and started using US Car Tools' stiffening kits when I built cars. I'm on the third one now. For a street car, a set of factory style torque boxes and the frame connectors really make a big difference! The parts are downright cheap, but the welding work is extensive. The rugs and seats have to be out for the subframe connectors, and you want to be damned sure that the car is straight when to put them in because it would be hell to straighten afterwards.
I looked on their site, it does look like a lot of work
 
That’s beautiful bottom!

Thanks, It took a Loooooong time to get there and am now stalled with other projects, it's in paint has seats and 99% of the wiring but I"m still learning how to install convertible tops and making parts for the early Darts,Valiants and Barracudas so the engine and trans rebuild has gotten put on the side burner "putting it together" phase since the machining and parts buying is already done. Time has gotten ahead of me.
 
I carefully hung mine down a little to get my door gaps decent. Seemed they closed up a little on top gaps over the years. I then welded in my sub frame connectors. I was a bit scared but it worked out well for me.
 
mine flexed a little bit. when on the rotisserie , but I do have to admit I didn't have floor pans or trunk pan in it when I did that, I did have it braced in the doors and windshield area. popped it down on wheels and axles . aligned the doors to the rear quarters and took measurements and then put it back on and turned it upside down. Then I welded in the floor pan. I now have good door gaps, much better than when I bought it.
View attachment 1715421164

I thought I'd do my pans on the floor, didn't thing they'd change the flex that much, but my rockers are shot. What's the plan with that?
 
Maybe set on stands (lift point areas)then measure areas (frame,rocker edge ect;)to the floor and make sure you maintain those measurements.Make sure you maintain your door lines as well. Maybe brace door openings as well.Measure door opening widths. Just ideas.
 
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