Installing Subframe Connectors with 2 Post Lift

[73inNH]

73 Vert

I bought the TinMan subframe connectors for installation on my convertible.

I wouldn't call myself a welder, but I think I can do a good enough job to get these installed. I know I have to make some modifications to fit them in the convertible. There is a YouTube video on doing so.

My question is, when I put my car up in the air with my two post lift, the door gaps widen. The car is obviously flexing.

How do I put the car up in the air to install the subframe connectors and not install them with the body already flexed?

On a four post lift, I'm guessing this would not be an issue.

Thoughts?

 

[Jeff73Mach1]

Prep for install on the lift, only lightly tack one side of each connector, then put the car on the ground for final welding.

 

[Sheriff41]

You really want weight on wheels when welding in your SFCs. You can make up some tire cribs out of 2x4s to set the car on and have plenty of room to get underneath to do the welding.

 

[giantpune]

You can use a set of wheel dolleys from harbor freight. I use the 2 post to lift the car up for most work. Then when I need to do something that requires the weight to be on the wheels, set it down on the dolleys. It raises the car up a decent amount.

 

[Steve McMahan]

I did mine with home made tire cribs. My arms did get tired.

 

[DAverkamp]

73 Vert

I bought the TinMan subframe connectors for installation on my convertible.

I wouldn't call myself a welder, but I think I can do a good enough job to get these installed. I know I have to make some modifications to fit them in the convertible. There is a YouTube video on doing so.

My question is, when I put my car up in the air with my two post lift, the door gaps widen. The car is obviously flexing.

How do I put the car up in the air to install the subframe connectors and not install them with the body already flexed?

On a four post lift, I'm guessing this would not be an issue.

Thoughts?

IMO, the only way to do it correctly is to stitch/tack weld them in with the sprung weight on all four corners. Pre-fit/mock them up on the lift, but final welding should be done with SW as I mentioned earlier IMO

 

[Grandmas73]

Here’s a picture of the cribs like my buddy uses when working on his Vette(obviously not the vette). If you build them sturdy, and use good wood you can go pretty high, having the two post to lift you up, setting them in place should be nice.
I want to do this to my vert also, keep us updated on how you make out

 

[turtle5353]

I did what grandma has pictured above.