I wanted to get some feedback about something 962porsche posted in the
rotisserie thread
Quote:
Originally Posted by 962porsche
in my shop we never use rotisseries for unabody cars . they get put on body jigs (frame bench) . if you do want to install a unabody car on a rotisserie then you have to triangle brace the car front to back and side to side . this is becouse of the flex has .a unabodyed cars tolerances are only 5MM that would be 2.5 MM plus and minus . the more you cutaway panels from the car the more bracing you have to install . i had a 911 in my shop this past summer the person that restored it. did it on a rotissorie and only braced the passenger compartment . when the car went back on its wheels every panel gap was off . so if you do have your hart set on using a rotissorie then don't forget to brace the engine and trunk compartments as well and tie them into the bracing in the passenger compartment . before you weld in the brasing square up the car don't just trust the gaps that the car has before its taken apart . becouse hows to say that the panels you're looking at have not been f@%$ with to make them fit ?
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I'm doing some rust repair on my 72. After grinding and scraping enough of that infernal rock guard, I decided to go with an
octagon rotisserie. The rotisserie is attached at the suspension points, not the bumpers. I want to make sure I don't do more harm than good here I want sufficient bracing to keep me out of trouble.
First of all, my tub is still on blocks, leveled and receiving a new left inner and outer rocker along with some adjacent metal. I will measure it before it comes off the blocks for a base line and to determine if it's close to square out of the gate. My formidable search foo is weak as I've found no procedures or explanation of how to "square up the car" or even measure it for squareness. Can someone please explain this in better detail?
Once square, how do you suggest a DIYer properly brace a tub? I understand front to back, left to right, trunk, cabin and engine compartment. Do I just start welding "X" patterns across door jambs and all three compartments? Anyone have pictures of a properly braced tub? What would you recommend a DIYer use for bracing?