Model A sub frame info needed.

I have an opportunity to buy a '30 Model A Ford Coupe, but am not familiar with sub frames, and hear that they are a common problem. Can anyone describe the location, function, and common problems found. Where should I look for these problems? In, addition an average replacement cost would be helpful. Photos or diagrams would be great.

Thanks,
Bob

 

Model A's have full frames not subframes. Subframes are found on Novas and Cameros.

 

Wrong!

Model's do in fact have what is called a subframe/subfloor..... It basically ties the whole bottom of the body together. They either rust from sitting on the ground or break at the last body mounting hole because they overhang the frame. It also seem common to break below the b pillar.

here is a picture of one...but upside down.....

 

Do you mean subfloors? The most common problem would be rust-out. Lots of people on here who channel their Model A's will cut out the subfloor anyway. Does that help?

 

Bob,
I have a couple of Model A coupes. They do have a framework that the body is attached to that is often called a sub-frame.
Yes, the sub-frame is quite often rusted back by the rear wells because the wheel well sheet metal is wrapped around the bottom of the subrail and water gets trapped there. But don't let that scare you away as new sub-frame pieces are available for all areas.
I've included a pic of the sub-rails but it is up side down (sorry, all I have).
As for cost...not really sure waht that stuff is going for right now. Check Snyders. http://www.snydersantiqueauto.com/

 

Nice picture Flthd31!

 

i think we have a communication problem here, when i here "subframe" i think a front suspension . i call what Hitchhiker posted a " subrail" or sub channel

 

Ha Ha. I see you got the email I sent you!

 

Yes, just checked it out this morning. I'm in the process of copying all of them. Thanks!

 

To all:

My error, I meant to say sub-rails/ sub-floor.

Thanks for the info. And special thanks to FLTHD 31, the photo says it all.

Bob

 

Certain models like Fordor, sedan delivery and Cabriolet have wooden subframes and sills covered with metal.
I modified one 30 cabriolet body all metal using 30-31 coupe subrails and door lower patch panels with bead. I did door jambs and door inner panels from scratch.

 

One of a series of excellent articles on an excellent site:

http://www.fordgarage.com/pages/subrailsbefore.htm

Basic site is http://www.fordgarage.com/ and is loaded with excellent A and B material.