JZTRK

how bad is the bump steer when using the 96 & up 5lug spindles on a 90 fox with the stock K member? I bought a set from the local salvage yard and now Im stuck with them or a $75.00 store credit all thay have are the 96 and up

FivePointOhh

5 lug swap dont have issues with bumpsteer with stock suspension. at least not that i have experienced.

Tony71502

I've got the stock front suspension with 94-95 spindles and have no issues.

JZTRK

this is what I found out to late according to MM
•Do not install a 1996-04 spindle on a 1979-93 Mustang fitted with a stock-geometry k-member! Doing so will significantly increase bumpsteer because...
◦The steering arm on the 1996-04 spindle is about 1.02" (26mm) lower (relative to the rest of the spindle) than the steering arm of any 1979-95 spindle.
◦The lower steering arm forces the outer tie-rod end to a lower position.
◦That new position is far too low for the steering rack location of any 1979-93 Mustang, and radically changes the steering geometry.
◦It is impossible to correct the geometry with a bumpsteer kit because the outer tie-rod end needs to be raised so much that it would have to occupy the same physical space as the steering arm.

Tony71502

You could install a sn95 steering rack, although I don't know the exact way to make it work, hell it may be a bolt on.

FivePointOhh

well get a bumpsteer kit then.

either that or go through all the work, time and money to change out to the spindles you should have started with in the beginnning

Tony71502

He said that MM claims a bumpsteer kit will not fix the problem. Also, I don't think he installed them yet.. just bought them for $75.

FivePointOhh

^^^i know, i read that. i dont see how bump kit in conjunction with CC, wont correct the issue, they just allows for further adjustment in your front end geometry to obtain an equalibrium in the area's of allignment. unless those spindles throw the allignment so far out of wack, that would mean you just didnt research enough and put the wrong part on.

some parts may fit...doesnt mean its right.

JZTRK

I havent installed them yet I am just going to bite the bullet and take the store credit.
also do i need any kind of brake line adapters ?

Jfsram

The bump steer kits for Mustangs are too correct the tie rod end angles for when our cars are lowered with springs. Not for when they are lowered with spindles that have a different height.

Bumpsteer is when the front tires toe in or out as the suspension travels through it's range. Lucky for most of us, this range is small in most situations.