 How low can you go?, Bump steer |
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| Lennies914 |
 Apr 9 2012, 06:42 PM
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#1
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Slacker  Group: Members Posts: 828 Joined: 9-January 10 From: NorCal Member No.: 11,216 Region Association: Northern California   |
I am about to swap out my front control arms and I want to lower the front end some when I reassemble. I have a new bump steer kit to install. So I guess my question is; will the bump steer kit have any negative effect on the steering if I choose not to go too low?
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Replies(1 - 6)
| tscrihfield |
Apr 9 2012, 06:48 PM
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#2
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Drive Fast and Take Chances Group: Members Posts: 643 Joined: 8-September 10 From: Amelia Ohio Member No.: 12,156 Region Association: None 
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QUOTE(Lennies914 @ Apr 9 2012, 08:42 PM)  I am about to swap out my front control arms and I want to lower the front end some when I reassemble. I have a new bump steer kit to install. So I guess my question is; will the bump steer kit have any negative effect on the steering if I choose not to go too low? Lennie, Yes it will have the same effect as if you lowered the car without the bump steer kit... Thomas |
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| ConeDodger |
Apr 9 2012, 06:52 PM
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#3
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Apex killer! Group: Members Posts: 23,606 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California
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Lennie,
You can lower it so the control arms are parallel with the pavement. I don't really notice bump steer and I didn't use my bump steer kit either. DanT lowers his cars so they are low like a snake. Maybe he will chime in if he wanders out of the Paddock... (IMG:style_emoticons/default/smile.gif) |
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| Lennies914 |
Apr 9 2012, 07:19 PM
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#4
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Slacker Group: Members Posts: 828 Joined: 9-January 10 From: NorCal Member No.: 11,216 Region Association: Northern California |
Thanks Guys,
Just to be clear, if I install the kit and don't lower it enough not good. If I don't lower it beyond the control arms being parallel to the ground I'm good without it. |
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| r_towle |
Apr 9 2012, 07:23 PM
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#5
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Custom Member Group: Members Posts: 24,585 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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If you use the bump steer kit it raises the steering rack to change the geometry.
If you lower the a-arms beyond parallel with the ground, they will hit the lowest welded flange on the body when you compress the suspension...so there really is a physical limit. the bump steer kit is ok, but if you are running sticky rubber...it wont make a difference...your gonna get bump steer. rich |
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| jmill |
Apr 10 2012, 10:39 AM
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#6
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
What you really need is a bumpsteer gauge. Ideally you want 0 bump but it'll never happen unless you redesign the geometry. Who knows where your at until you measure it? I'm not a fan of rack spacers. You would need to get a bunch of different sizes to get it right. You'll find playing with rack spacers is a PITA to get it just right. I like the spacers on the outer tie rod end. They are very easy to adjust. You can also move them around and measure bump without crawling under the car.
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| underthetire |
Apr 10 2012, 11:16 AM
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#7
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
You see how low my car was. I run a bump steer kit and it did help. Think rule of thumb, if your lowering your car to where the tie rod ends move up the same distance (thickness) of the spacer, run them.
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