TAC Tech > Tires, Brakes & Suspension

subframe connector istallation

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81Resto:
I am looking at installing subframe connectors during my restoration.  I am split between the global west subframe connectors and the PTFB Gen II's.  This is less of a question of which one would be best to use
but more on the installation of.  All instructions I have read have said to install with the car on the ground.  However, I currently have the car on a rotisserie, this feels like it could be a good time to
do because of ease of access and would not be welding out of position. These will be welded in.  My thought being welding in the back and bolting in the front to the body of the car until the front clip can be installed.  I know that this will take
some careful measuring and planning, so that the front clip will bolt up correctly.  Does anyone have any experience installing these?  Is this a bad plan? doable? Should I wait until the car is back down on the ground?

roadking77:
Sounds like a good idea as far as being able to get to them, but Im not sure I would want to do it that way. I am pretty good with laying things out. Try laying out precise anchor bolt patterns for 30 or 40 steel columns in a concrete pour when all you have is a bed of gravel!! But I dont think I would want figure out where something like this would weld in place to bolt up with no problems at all. Also not sure if it makes a difference if there is a 'load' on the suspension when these need to be put in place. Laying underneath a car to work on something is def a pain in the &%^%&^ but may be better in this case?
FWIW I do not have them on my cars so I have experience.

5th T/A:
Back in 2020 I was seriously considering installing sub-frame connectors, but decide not to. Researching installation instructions they want the cars weight on the suspension and tires as the car would sit on the ground. While it looks appealing  to install them with your car on the rotisserie, I personally would not take the chance. So you either need a lift that supports the tires or need to build cribs.

Here is a message from a Forum member who installed PTFB connectors. Unfortunately the links in this message are no longer good. You might try messaging the poster Steve for input or you could try emailing him.

IMG_4075 by Lawrence Alexander, on Flickr

Wallington:
I don't really see an issue. Normally done on a hoist or jacked up and with wheels on blocks to create a natural stance. If you are set on welding then you could still do so while you have good access, then finish the other end when fully assembled on the ground and complete where drilling and bolting isn't so bad. I have the PTFB type, bolted-in.

FormTA:
I would think they would want to move. I installed the PTFB ones back in 2020ish. It was pretty easy and made a bug difference. I may have missed it but you have the front subframe on and square with it on the rotisserie? I would think everything would be out of whack without the car together.  Just my opinion.

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