Bump Steer

scupking · Dec 28, 2007

What would be the best bump steer kit? My alignment is good but since being lowered she just drifts all over the place.

96GTstang46 · Dec 28, 2007

Maximummotorsports.com

A friend of mine here on the fourms just did it not too long ago (Tubro92pgt) and he said it wasnt too bad of a job, but made a good increase in turning and as you said "Drifting" all over the road...
Its a good idea to do IMO....

SRT Handz · Dec 28, 2007

I have a bumpsteer kit and it made a Huge difference in controlling the car.

the Maximum Motorsports kit requires you to drill out your spindle, The Steeda and UPR BumpSteer kits DO NOT require you to drill out your spindle with makes instal much easier.

...i got a UPR kit for that reason...no drilling required

4.6andSlicks · Dec 28, 2007

SRT Handz said:
I have a bumpsteer kit and it made a Huge difference in controlling the car.

the Maximum Motorsports kit requires you to drill out your spindle, The Steeda and UPR BumpSteer kits DO NOT require you to drill out your spindle with makes instal much easier.

...i got a UPR kit for that reason...no drilling required

How much is your car lowered ? I was told 1 1/2" doesn't require a bumpsteer kit and I thought the Ford B springs were less than that.

gsjohnson · Dec 28, 2007

4.6andSlicks said:
How much is your car lowered ? I was told 1 1/2" doesn't require a bumpsteer kit and I thought the Ford B springs were less than that.

Who ever told you that gave you bad information. The smallest of ride heighth changes will effect bumpsteer. It's just a matter of how much you will tolerate.

I installed the Maximum Motorsports bumpsteer kit myself and didn't have to drill my spindles. Not sure where that one came from.

Definitely a great mod. It completely eliminates the steering wheek kick when hitting bumps or dips in the road.

4.6andSlicks · Dec 28, 2007

gsjohnson said:
Who ever told you that gave you bad information. The smallest of ride heighth changes will effect bumpsteer. It's just a matter of how much you will tolerate.

I installed the Maximum Motorsports bumpsteer kit myself and didn't have to drill my spindles. Not sure where that one came from.

Definitely a great mod. It completely eliminates the steering wheek kick when hitting bumps or dips in the road.

That one comes with a number of different spacers. How do you know how many to use? Is it in the install instructions? I just lowered my car a with H&R sports. It's still on the jack stands. Now I'm wondering if I need them.

SRT Handz · Dec 28, 2007

4.6andSlicks said:
How much is your car lowered ? I was told 1 1/2" doesn't require a bumpsteer kit and I thought the Ford B springs were less than that.

you need a bumpsteer kit with any little change in the mustang geometry.

mine is very extreme because my car is REALLY low.

4.6andSlicks · Dec 28, 2007

SRT Handz said:
you need a bumpsteer kit with any little change in the mustang geometry.

mine is very extreme because my car is REALLY low.

How did you know how many of the spacers to use on the tie rod end ? I don't mind buying the kit, I just don't want to make bumpsteer worse.

SRT Handz · Dec 28, 2007

4.6andSlicks said:
How did you know how many of the spacers to use on the tie rod end ? I don't mind buying the kit, I just don't want to make bumpsteer worse.

there is a special device for measuring Bumpsteer called a Bumpsteer Gauge.

EPIK · Dec 29, 2007

its definitely worth the time & money. I have the steeda kit & the X2 balljoints on my 03 & it made a huge difference in the feel of the front end, & it tracks alot straighter over bumps. My 95 sits about 3/4 of an inch higher than my 03, but the bumpsteer on the 95 is far worse since I didnt do the bumpsteer kit on there when i lowered it...

I think the lower the car sits, the more spacers go on top of the tie rod?? Heres a pic of mine, & this was when I still had H&R ss's in front...My car sits about 1/2" lower now...

gsjohnson · Dec 29, 2007

The first thing I did was try and get the tie-rod parallel with the lower contol arm by eyeball to get somewhat close. You will notice in the supplied pic by EPIKGT that is exactly how his setup is sitting. You will have to do this thru trial & error with the supplied shims. MM has very specific instructions using a gauge. I used the board and jack method to get even closer. After getting it as close as I could eyeballing it, I then reinstalled the wheel with the jack stands on the frame, letting the suspension droop. I then placed the floor jack under the tire and began to jack it up towards the ride heigth position, which I had noted when the car was on the ground. I then layed a board or piece of plywood upright laying against wheel/tire. Begin jacking the droop thru the compressed suspension area and noted the movement of the board. What you are really watching is the toe change thru the suspension travel causing the dreaded bump steer. MM wants you to use gauges in their instructions. I only used this method to get it closer than eyeballing it. In the end, I took it to a specialized frontend shop and had it completely dialed in with gauges. It cost me about $150 with a complete frontend alignment. I installed my Sportline springs, CC Plates and bumpsteer kit all at once. Definitely cheaper to do all of this all at the same time. Do not use a typical Goodyear or Firestone place. Those guys can barely adjust the toe. Hope this helps.

ScortLX · Dec 29, 2007

Can you use just the bumpsteer kit and the sway bar extention without the ball joints and feel a difference? That seems like a pretty economical solution to some of the "wandering" issues these lowered Stangs have.

gsjohnson · Dec 29, 2007

ScortLX said:
Can you use just the bumpsteer kit and the sway bar extention without the ball joints and feel a difference? That seems like a pretty economical solution to some of the "wandering" issues these lowered Stangs have.

Absolutely you can and will notice the difference. There's nothing like driving thru a corner hard and hitting a dip or a bump and there is NO steering wheel kick. Conversely, there's nothing worse than hitting a dip and your car loses grip while cornering.

slvr00gt · Dec 29, 2007

gsjohnson said:
the end, I took it to a specialized frontend shop and had it completely dialed in with gauges. It cost me about $150 with a complete frontend alignment. I installed my Sportline springs, CC Plates and bumpsteer kit all at once. Definitely cheaper to do all of this all at the same time. Do not use a typical Goodyear or Firestone place. Those guys can barely adjust the toe. Hope this helps.

I have bumpsteer problem for a while now. I hate it with passion! I took the car to couple of shops that claimed to be "alignment specialists", one of them around Philly recommended by somebody on this board. None of them could get it right! I have almost the same setup: 1.5" drop, MM plates, X2 ball joint and adjustable tie-rod kit.
I was reading up on alignment basics. It should not be too hard to do it ourselves. With the solid axle, mustang only needs two wheel alignment.
I ordered bumpsteer gauge and other tools a few days back and I will try to do it by myself. Sick and tired of shelling out money to alignment shop that do not know what they doing!

Novanutcase · Dec 29, 2007

Bump steer kit will also give you a feeling of "Go-Kart" like steering even when you aren't hitting bumps since it locates the tierod ends correctly!

John

4.6andSlicks · Dec 30, 2007

With all the Mustangs out there lowered 1.5", isn't there someone that can say they had it done correctly and the car handles great and you should use "x"
number of spacers above the tie rod end? It should be damn close for all our cars, at least if they're close in year.

Anyone do an '01 Cobra or GT or something close?

LaserSVT · Dec 30, 2007

Anyone try the stangsuspension.com bump steer kits? I am also curious about their subframes.

Blinkstang · Dec 31, 2007

4.6andSlicks said:
With all the Mustangs out there lowered 1.5", isn't there someone that can say they had it done correctly and the car handles great and you should use "x"
number of spacers above the tie rod end? It should be damn close for all our cars, at least if they're close in year.

Anyone do an '01 Cobra or GT or something close?

Shoot Maximum Motorsports an email with your setup and your question. I have always emailed them questions I've had in the past and they get right back to you with good info.

gsjohnson · Dec 31, 2007

4.6andSlicks said:
With all the Mustangs out there lowered 1.5", isn't there someone that can say they had it done correctly and the car handles great and you should use "x"
number of spacers above the tie rod end? It should be damn close for all our cars, at least if they're close in year.

Anyone do an '01 Cobra or GT or something close?

The problem is there are an infinite amount of possibilities if you want to get your bump steer right on. You're looking for the easy way out instead of getting down and learning about it. There are production differences in every vehicle. The steering rack location is critical to this adjustment and they are mounted in rubber bushings. Same with your control arms. all of which effect your bumpsteer adjustment. Then there are probably a dozen different spring lowering packages out there, all of which effect the bumpsteer adjustment as well. And then what about the production tolerances. Otherwise, don't you think that these bumpsteer manufacturers would just tell you and supply with the one and only correct spacer(s)? I actually was between two different sized spacers for mine, as I had already used the spacer that I needed. I had to call MM and explain it to them and they shipped me out the needed spacers at no charge. There's no short cuts to doing things right.

scupking · Dec 31, 2007

So would it matter if I bought the steeda or MM kit, would they both do the job equaly as well? Also what are the x2 ball joints that the steeda kit talks about?

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