Cracked subframe

That is a highly stressed location, and that is a good repair weld.

 

Yikes! Good catch. I'll check mine as I'm mid timing belt and it's easy to see at the moment. I wonder if this is something rarely observed due to the low mileage on most Mondials. As the owner of a relatively high mileage car, now I'm concerned.

 

I see them on 1995 F355 too.

 

I think I was the one who mentioned that my mechanic found it at the time of my engine out major when I first bought my car. Mine however was upper arm on passenger side. What is interesting is yours also was discovered during engine out major. Not sure how easy it would be to find this engine in.

 

Known problem. Ferraris flex and frames crack.

 

New 458 cars cracking badly also, friend of mine has to plate and weld them....aluminium welding.
Maybe they should glue, like Lotus do for their cars and for Aston Martin

 

I also found a few (!) cracks in my subframe when she was on the hoist. I did a temporary weld up, but plan to do it a bit more professional (with extra reinforcements) when engine is out in a few years. Most of my cracks where around the lower triangles.

As said before: known problem.

 

When I took my 3.2 engine out for a full overhaul I found the rear sub-frame was fairly corroded but not cracked. The worst parts were the upper surfaces of the front and rear side members of the frame. In particular the rear side member required welding a strengthening piece across the full width. The corrosion was virtually impossible to see even with the car up on a lift. If I hadn't fixed this I don't like to think of the possible future consequences. The attached photo just shows the frame after cleaning, painting and rust proofing.
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360 has major frame cracking problems particularly earlier cars. You would think Ferrari would know how to design and fabricate a chassis by now. Ditto exhaust manifolds. To get good weld penetration you MUST vee out the crack. And sudden cooling (the compressed air trick) will make the weld brittle, better to wrap area with blanket before welding and let it cool slowly. I would recommend getting this done by a professional preferably with a TIG welder.

 

Cracked frame on my 3.2 as well. Also discovered during engine out service.
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