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nk_zhp

bent subframe options?

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Hi folks,

 

Working on my newly acquired '72. The car pulls to the left ever so slightly and under braking the pull amplifies. My original suspicion was worn control arm bushings but upon further inspection I noticed that the subframe section that holds the front tension strut bushing is about 10 degrees twisted counter clock wise (if you look at the car from the front) and about 10mm pushed inwards on one side. I am pretty sure it allows the front wheels to move backwards and essentially dis-balances the caster causing the pull.

 

...anyways...

 

Am I sol? Do I need to get a new subframe or could these sort of problems be beaten into submission literally speaking?

 

 

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No, you're not SooL.

 

Subframes are easy.  The underlying problem would be if the shell above the subframe's been moved.

 

If it has, you'll need to put it back, and that's usually done on a frame rack.

 

If it HASN'T, then yes, you can either straighten it, and possibly reweld, or replace.

It's a bit of work, but it's not anything to fear  (like rewelding E36 rear trailing arm brackets is)

 

t

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I inspected thoroughly and so far it doesn't seem like the bent has traveled to the frame, it is very subtle but enough to flare my OCD. It looks more like a direct impact to the subframe in that area than an accident that would have torn the wheel backawards causing the tension strut to bend the subframe.

 

Thanks for your feedback, sounds like I should visit a body shop 1st to see if they can bend it back into shape. If not I have to weigh in DIY vs shop doing the subframe swap.

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Go under the car and measure the diagonals from front to back.  Pick a location on the front where you think the damage is.  This will tell you if the chassis is square or not.

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my car came like that, po hit some thing low, hard enough to alter the bushing mount. i swapped subframes. the radius arm was bent slightly also.

 

IMG_1793_zpsb0f9421c.jpeg 

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where are you located?

 i have several subframes off of cars with 

the drag link attached. $80 plus shipping

from philadelphia.

stone02

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Replacing subframe is relatively easy and didn't need special tools.

I did mine in a driveway with two 4x4 across the engine bay on the fender.

I chain the engine to imobilise it in place.

Loose and drop the sub frame with a floor jack,

without the strut is more conveniant 

It's more involving then that but you got the big pictures. 

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