Global west mustang suspension - help needed.

[Zachalanche]

I have the global west coilover setup on a '70 boss 302. Front tires are 245/45/17 and the rims have a 4.5 in backspace. I have noticed at about 1.5 inches from full bump, the tires contact the bump stop and bumpstop support (I am using the global west bump stops). I pulled the wheel back off and did some measuring and it looks like a 205 is the max with that would fit this suspension, and even that might be pushing it. With the bump stop completely removed, everything clears just fine, but I wouln't want to run no bump stop or the strut rod will contact the fame at full bump.

So, those of you who have used this suspension, what have you done to make it work? I could custom fab some bump stops for this that would actually work, but considering what global west charges for their stuff, It would be nice if I didn'thave to re-engineer it.

thanks in advance.

[GrabberGT]

This sounds odd. Any other suspension mods? Excessive static camber? Im running the same size tire and wheel combo on my Maverick and have no problems. (TCP rather than GW but close enough)

[Zachalanche]

This sounds odd. Any other suspension mods? Excessive static camber? Im running the same size tire and wheel combo on my Maverick and have no problems. (TCP rather than GW but close enough)

0.5 degrees of camber at ride height.

[Carl @ Chassisworks]

Have you contacted Global West? What did they have to say about it?

[Zachalanche]

currently talking with eric from global west. I need to get him some more pictures, and so far he has been eager to resolve the issue, so, no complaints there. The first thing he said was "how is that possible". so perhaps I have made some sort of installation mistake that I am unaware of. Just hoping some on here might have had a similar experience and would be able to offer some quick advice.

[Zachalanche]

Well, Global west is officially baffled. sent them tons of pics and measurements, and they don't see anything wrong. how am I the only one that has this problem. I was really hoping not to have to get out the welder and grinder on this.

[GrabberGT]

How about a couple pics for us. Im intrigued.

[Zachalanche]

62191

[andrewb70]

Have you double checked the backspacing of your wheels?

Andrew

[Zachalanche]

yes, 4.5 on the nose. also measured the tires since sometimes they aren't always true to size, but they measure at 245 on the width (sidewall to sidewall).

[zombiekiller]

what spindles and brakes are you running?

[Zachalanche]

original '70 boss 302 spindles

[GrabberGT]

More pics please.

Without the wheel mounted, does the upper control arm even come into contact with the bump stop. It appears that with its current arc or travel that it would not. I see that you have done the upper control arm relocation (Shelby drop). Are you sure that is located correctly. Im surprised to see the old mounting holes from the angle this picture is shown.

[campindog]

Although I don't have the GW coilovers, I had the same problem with the inner fender brace. I ended up taking ~1" out of the side bars and folding them in (after making relief cuts on the upper bar welds). I had to weld tabs for the horizontal bars to land on. Excuse the horrible welding, that's not my thing.
Don't forget to check for spring clearance at full compression. I would also look at putting some kind of guard on the arm so the B/J doesn't colide with the bumpstop.

[RobNoLimit]

Looks like the right answer to me. Zack's pict looks to show the bumpstop too far outboard. This could be from the Shelby mod. Definatley check for spring and shock clearance at full bump.

[CTSV]

i think your spindles might be the issue, did you check the casting number to verify they are correct 70? I have a 70 myself with these same parts and mine does not touch at all with a 9 inch wide ri with a 255 tire slammed. on my car it seems i would hit the top ball joint mount before i ever came near the Global West inside shock tower brace with bumpstop

[Zachalanche]

Although I don't have the GW coilovers, I had the same problem with the inner fender brace. I ended up taking ~1" out of the side bars and folding them in (after making relief cuts on the upper bar welds). I had to weld tabs for the horizontal bars to land on. Excuse the horrible welding, that's not my thing.
Don't forget to check for spring clearance at full compression. I would also look at putting some kind of guard on the arm so the B/J doesn't colide with the bumpstop.

This is what I was thinking of doing, so, thanks for the picture. But, Its a little frustrating that this kind of work is requred for a $200 set of bump stops to work.


Looks like the right answer to me. Zack's pict looks to show the bumpstop too far outboard. This could be from the Shelby mod. Definatley check for spring and shock clearance at full bump.

the upper a arm is dropped 1.5" per the template that shipped with the suspension kit.


i think your spindles might be the issue, did you check the casting number to verify they are correct 70? I have a 70 myself with these same parts and mine does not touch at all with a 9 inch wide ri with a 255 tire slammed. on my car it seems i would hit the top ball joint mount before i ever came near the Global West inside shock tower brace with bumpstop

I'll take a look at this, but how much variation is there in differnt years of mustang spindles? as far as I know, unless casting numbers prove otherwise, they are the original spindles that came with the car.
here is a backside picture of the spindle.
62685

[Zachalanche]

More pics please.

Without the wheel mounted, does the upper control arm even come into contact with the bump stop. It appears that with its current arc or travel that it would not. I see that you have done the upper control arm relocation (Shelby drop). Are you sure that is located correctly. Im surprised to see the old mounting holes from the angle this picture is shown.

the bump stop hits the outboard edge of the ball joint on full compression. the upper arm was dropped 1.5" per the global west supplied template.