Well, they're certainly in there now, but I have a concern. The person who did it for me did not remove the carpet in order to weld on the inside. Rather, he welded them up on the outside. Anyone think this is sacrificing a significant amount of rigidity?
I still definitley notice an improvement in cornering and overall stiffness. Can't help but feel tho, that straying away from Spohn's recommended weld side (inside as opposed to outside) is hurting me some.

 

I am pretty sure you only pull the carpet up because the floor pan gets so hot and could melt your carpet glue or even set it ablaze. You shouldn't weld anything in your car unless you have holes or something in your floor pan.

 

yeah i agree, never seen nor worked with steves parts but i don't think they weld from the inside of the car

 

You misunderstood me... lol

I mean, the inside of the subframe, the inside track. Spohn welds them on the inside, where as my install was welded on the outside track.

So, please respond to this new info. Hehe.

 

On the outside? You mean right on the floorpan against where rocker panels would go? I thought they were welded on each side on the outside....alstons are on the inside....either way...pulling the carpet isn't that hard....or you could pour water on the carpet where your going to weld to prevent a fire.....

 

Argh. No. Look... when you brace the SFCs up against the underside of the car, there are two options as to where you will weld. On the inside of the SFC, or on the outside. So, imagine standing behind the f-body, and you see the two SFCs in place, the driver side SFC is welded on the outside, its left side. The pssngr SFC is also welded on the outside, this being its right side.

So, with this cleared up, does anybody think welding the SFCs on thier outsides (the sides closest to the door!) will sacrifice rigidity as opposed to the outsides (farthest from door!)

 

I would recommend welding them on both sides to hold the car together better. It says in the instructions to do both sides. Since they are tubular and didn’t nicely go up against the underbody of my car I had to use round stock to fill in the gap.

 

With SPOHN tubular subframes, typically you cannot weld them in on the INSIDE where the floorpan is. The problem with that is that there is no real way to get the welder tip in there because of the tubular arc.

One way around it, if you must have the INSIDE welded.... was devised by a friend of mine where you take a piece of steel, say 1/2 round diameter... and weld the steel to the floorpan, and to the subframe.

At the front mounting point and rear point of the subframes they should have the **** welded out of them.

Its not imparative to weld to the floorpan or inside, but I had mine done since they were square stock, not tubular. I also had to use some steel but only about a 1/4 diamater piece.

 

me and my grandfather just did the outside where the lip hangs down, that was good enough for us.

 

you cand weld the inside with a mig welder, but its a pain in the a**......but there is no need to do that anyways

 

Well... ok then

It sounds to me like they're fine then. They ARE welded heavily on the front/back mounting, and along the outside rail... good - I was concerned - and it is unfortunate the wordplay confused everyone.