"Jerry Martes" wrote in message
news%1Xd.66316$uc.45319@trnddc08...



"Tom Gardner" wrote in message
...

"dafalcon" wrote in message
oups.com...
Any ideas on the proper way to box in a car frame? I need to box a
frame for a 1967 Cutlass convertible and have recieved conflicting
info.

1 welder says run the bead all the way around the metal pieces I am
using to box in the fourth side. 2 say I won't gain anything by that, I
should run a 4 inch bead, leave an 8 inch gap, run another bead util I
have encircled the piece. Any isuggestions?

Also can I add strength by adding a piece of flat stock to the outside
or inside of the frame over this span?

Thanks,

First, why? How thick is the plate you are going to use? But, getting
back to why, the application would determine method. (Demolition Derby,
or
rot-out, or something else?)



Tom

He's working with a 67 Cutlss convertible. Most likely not a car for
demolishion derby.
I have seen Convertible cars benefit from "boxing" their frames. I have
no info on just how much benefit.

Continuous welds will provide the maximum strength. But the time and
effort may not result in enough additional ridgidity to make the time to
weld worth it to you.
I'd say that the frame will look better when continuously welded. The
welds may be very difficult to see after the body is in place.

Jerry




Boxing the frame is mainly for torsional rigidity, weld all along. But only
weld ~4-6" then move the heat somewhere else for a while then come back to
the gaps.
Pat