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Wrench spinner
Joined: Thu Oct 5th, 2017
Location: Leigh On Sea
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But, the fact Ford went to boxed frames and then unibody suggests to me that the boxing didn't really solve the problem and looking at that frame flexing I would say that boxing the side channels won't make a big difference as the cross members are offering little resistance to the movement.
Is it possible to add some extra, deeper cross members to tie the two sides together better?
I would also be inclined to strengthen the side C sections by bolting in matching C sections that fit inside the existing sides if that is possible, since that will help take the compression / tension loads in the horizontal sections and avoid issues with welds introducing weak spots.
If you can get it, Dinitrol is an excellent box section anti rust treatment as it is very liquid and creeps into joints - I have cut open a rocker treated from new with Dinitrol and it was totally rust free after 30 years of British weather!
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