Quote:
Originally Posted by Old H2S
Some back ground..
My new to me 83SC has 300k miles on it and has had 2 major impacts to it. The first in the drivers side front fender that was repaired but the car is out of true on the diagonal with the front main cross bar 6mm back on the driver side causing miss alignment on both door closing.
The second hit was a snap over steer impacting the drivers rear wheel.
I will pull the engine to get the frame aligned.
The big question is, this unibody car is soft, and flexible still after repair, what are the best ways to firm it up without getting too much NVH ?
|
The first thing you need to do is find someone with a Celette w/proper attachments. Just getting it mounted will tell you where the tub is out of align.
We've seen 911s with over 100k mis, no hits at all, but have been tracked (not as full blown racers, but consistent DE cars) and they have been flexed and needed to be pulled and strengthened. Clearly the tub you describe needs to be checked...
I would then seam-weld the side rails in the trunk, maybe add a front strut tower brace, and sway bar reinforcement plates if it has the thru the body bar in front.
In the rear, you should check the torsion tube for cracks at both ends, and also check the 4 bolts bosses where the torsion bar cover mounts.. they have hairline cracks sometimes.. You can also create a gusset to tie the torsion bar tube to the chassis in the upper area of the trans tunnel
You can plate t strengthen this area too. Then of course there is the shock towers in the engine compartment, and you can plate the area where the rails form a corner on each side heated towards the shock tower.
Get it on a Celette first and see what you have.
Good luck!