Alright guys i had my spohn SFC's (tubulars) installed a while back by a body shop my garage works with... now the guy welded the two larger tubes to the rocker panel flange/pinch weld at the bottom of the car, but not to the floorpan. (1 inch bead every 3 inches). now about 3 weeks after that i had my friend weld them up fully on the flange, but still not to the floor pan. Oh i did have the two y braces welded in but only from the sfc to the trans X member rails. now seeing that the unibody is basicly held together by the floorpans (correct me if im wrong), i think im missing out on some extra rigidity by not welding the sfcs to the floor pan... (oh and yes they did make a difference in the way the car flexes)

In light of the above should i weld them into the floor pan?
If I do, should i weld them in fully?
aslo another slight problem is that there is a decent amount of space between the floor pan and the closest spot to weld on the sfc.... would it be possible to use a 90 degree angle steel to join the two areas and possibly gusset it?

any helpfull opinions are welcome, thanks in advance.

 

Bump.....

 

you really dont need the full weld at all, let alone welding them to the floor pan....its not gonna hurt anything by doing it, but its not going to benefit you at all

if you want more stiffness you need more bracing

the unibody is held together by everything, unibody is short for unitized body, meaning the entire thing is suposed to act like a once piece system.

if the subframes are solidly welded in the front and back, and stitch welded along the rocker pinch, they will NEVER come off....and will provide you with all the stiffness they are gonna give you regardless of any additional welding

 

cool, thanks.... i will be adding a cage to the car very soon, so i figure between that and the sfcs i should be alright.

 

no problem