Boxed suspension

[MoldyOldy240]

My domestic friend was telling me about "boxing" a cars suspension; apparently it keeps the knuckles from moving when a lot of power is trying to be put to the ground? I was wondering if anyone could shed some light on this.

[Hijacker]

Boxing in the suspension is like boxing in the frame. They're welding steel plates to their control arms to reduce flexing when there's a lot of force on them.

I've never seen it being an issue on 240s as our rear suspension geometry is engineered better than most domestics. Most 240s aren't seeing the torque that a mustang with a built motor can put down. a 2.4l Inline 4 just doesn't have the same sudden grunt from down low that a built V-8 is going to put out.

However, in lieu of boxing control arms, you can find tubular control arms for our cars which allow complete adjustment to the rear suspension. SPL probably makes the best tubular lower control arms.

[MoldyOldy240]

For a stock engine I can see where it would not be an issue; but if a member with a ka-r were to do it, then there may infact be a great benefit to doing it?

I'm just looking at all the options available because I am building an entire sub frame (lsd, knuckles, suspension, etc) outside of my car and would like to create the best possible scenario for putting down power when I either super or turbo charge the car.

Now you made mention of using tubular control arms that allow complete adjustment of the suspension, and I will go do some research on those as well.

Sorry for all the questions; as I know I have still yet a lot of reading to do before I can really create an ideal setup, I just want to make sure my head is in the right direction.

[Hijacker]

Seriously for the amount of torque we put down, KA-t, SR, RB, there's little benefit. To make the power necessary, you need to have a big turbo, so you're not putting down that torque instantly, which is why the muscle car guys do it. Their motors put down gobs of torque at the press of the pedal.

[MoldyOldy240]

Thank you have placed me in the right direction;

Basically, if my engine platform creates high torque (200+) at low rpm i.e: 1500 then there is a reason to do this. The only way I for see that is a KA-R m90

If not, I will see little benefit from it.

Thank you very much.

*EDIT* the only reason why I am figuring it this way is because an m90 is at 90% at 1500 RPM, which would in theory put down enough torque to warrant a boxed setup.

[bamracing]

I can see a use for it if you are racing where the rules require stock suspension and there is a high probability of contact. It's not the power that I'm worried about when I'm oval track racing.