Need help with body flex

I have a 52' mercury two door hardtop no post and the body flexes really bad when turning and the passenger door will swing open. I've adjusted the door and the door catch at least a couple dozen times and it never stays closed. Is there any way to fix this easily? Do I need to weld in braces? I'm at a loss at this point. Thanks

 

Sounds to me like you might have a bigger problem like major body structural rust or a frame issue.

 

There's no rust anywhere on the body or frame and what kind of frame problem could there be?

 

somethings movin under there ,,,,,,,,check closely had a 70,s vette that when put on a rack would flex so badly that the door gaps would open up almost to a half inch , hate to be the bearer of bad news but thats a scary issue look closer ,,,

 

Any idea what to look for?

 

*

 

Broken or loose frame cross members, loose bolts or rivets

 

Ok thanks

 

Maybe loose or broken body mounts ? By the way your car is NOT a uni body car.
I assure you it has a full frame under it.

 

You could have a body mount rubber that has collapsed under the B-post. The latch/ striker could be worn out.
Fritz

 

Wrong thread my bad and alright thanks I'll definitely take a look

 

Brand new door strikes I bought two just to be sure

 

A 52 Mercury is not a unibody, it has a full frame under it. I would replace the door strikers and latches, check the hinges too (there might be a bunch of slop in them).

 

I know it's not a uni body that was supposed to be posted in a different thread