Sub Frame Connectors

[Herr_Poopschitz]

Not entirely so, yours do weld to the floors but most weld in subframe connectors only weld to the front crossmember and rear frame rails. On the type you installed the floor becomes the final side of the box seeing how it's a channels instead of a box whereas most are true box tubing and are quite rigid.

Just adding to this, the height of the connector greatly increases its ability to resist bending. Connectors that span from the front to rear only are not nearly as effective as those welded to the pan, or even better, those where the floor has been cut and boxed tubing has been installed through the floor. The support of having the connector fixed to the floor helps immensely as well, as free edges are more likely to move around under high loads.

Bending Stress = Mc/I...Where 'I' is moment of inertia of the cross section of the connector in this case.

As for installation, I measured and leveled everything, cut the floor where the connectors were going to be installed, verified that nothing moved, then put in 2x3 tubing.

 

[ny_racer_xxx]

This is pretty much what I did. I used XV (now defunct) connectors which welded to the floor all the way. I leveled it and hung the doors. Then tacked it real good, then raised the rotisserie off thr jacks and turned it so it was easier to weld.
Now the car is completely assembled and has been driven with no noticeable issues.

View attachment 202394

BTW XV Racing Products are still being made...

http://xvengineering.com/products/xv-sub-frame-connectors

 

[McMopar]

I installed the U.S cartool kit SFC/torque boxes/inner fender braces/moved springs in as well and the lower rad support, really nice kit a little tweeking here and there but overall really nice fit. I am sure it will be a lot stiffer now. I also welded up a lot of seams while I had the chance. thx Bruce

Great pics, I have a question, you moved the springs in, can you fit a 3" exhaust and the stock fuel tank? How big of a tire can you fit with the springs moved?

Thank you

 

[roadrunner69440]

Ok another question , with weld-in frame connectors , how does that affect the routing of the e-brake cables, will I be able to still used them or will they rub

 

[Photon440]

Ok another question , with weld-in frame connectors , how does that affect the routing of the e-brake cables, will I be able to still used them or will they rub

Some people just re-route the cable. Others run the cable through holes in the connectors. Here's the holes supplied from Auto Rust Technicians:

 

[Darter6]

To keep the strength of the connector, I have seen guys drill and weld a tube into into the connector and pass the cable thru the tube.

 

[Photon440]

That's what I would do.

 

[daytona kid]

I welded my uscartool connectors everywhere they could be welded after insuring my chassis was straight with mucho measurements, plumb-bobs, lasers, and a lot of sharpie marks on my garage floor. I also connected them into my roll bar system which goes from shock towers to rear-end hump, kinda like bridge girders. Here's the factory spec drawing incase anyone needs it.

 

[roadrunner69440]

Thanks photon and darter, I plan on using us cartools conns. That's a good idea using a pipe welded Into place

 

[McMopar]

anyone have any thoughts on exhaust fitment?

 

[daytona kid]

anyone have any thoughts on exhaust fitment?

In regards to sub-frame connectors?

 

[McMopar]

frame connectors, spring relocation kit and mini tubs?