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-   -   Fixing Suspension Geometry (https://www.f150forum.com/f38/fixing-suspension-geometry-409016/)

Logan Ty 02-23-2018 02:27 PM

Fixing Suspension Geometry
 
Currently my truck is sitting on a 2.5 inch level kit. I went the cheap route with a spacer, but I’m looking to fix the suspension geometry and I’m debating between installing a 4 inch lift or going the coil over and uca route. I like the way it sits now but my angles are almost maxed. I do not want to go any higher if possible. I would like to see if anyone has put a lift on their truck but kept it at stock height with a 2.5 lift in the front by just adding a smaller spacer to their truck. Is it safe to go this route?

RLXXI 02-23-2018 03:16 PM


Originally Posted by Logan Ty (Post 5676406)
Currently my truck is sitting on a 2.5 inch level kit. I went the cheap route with a spacer, but I’m looking to fix the suspension geometry and I’m debating between installing a 4 inch lift or going the coil over and uca route. I like the way it sits now but my angles are almost maxed. I do not want to go any higher if possible. I would like to see if anyone has put a lift on their truck but kept it at stock height with a 2.5 lift in the front by just adding a smaller spacer to their truck. Is it safe to go this route?

The only way to correct suspension geometry is to use a true lift kit. Leveling only kits suck.
.

SALEEN961 02-23-2018 08:26 PM

What are you trying to accomplish by "fixing the suspension geometry", what is the truck doing that you don't like, what would you like it to do, and what is it that is concerning you about your current setup?

Knowing what your goals are will allow people to give you much more helpful responses as there is no ideal suspension geometry, there are just too many different use cases and too many valid ways of setting up a suspension system for one set of parts or angles to be the answer in every scenario.

antony1103 02-24-2018 02:44 PM

I'm in the same boat as you. I'm looking to add about 2" to the front of the truck to keep a decent rake when I AAL to the back, but I don't want to screw up the angles in the front, especially since I have a 4x4. I looked into cherry picking parts from a 4" lift kit and did the math. It just won't work out for such a small lift and the geometry will still be all wonky... You may be able to get away with doing that for 3", but for what I want with a 2" lift that won't cut it. Bare minimum would be to make your own cross members, diff drop, and driveshaft spacer. Extending the steering knuckle would be tough, unless you were really crafty and could cut down a 4" lift knuckle to size and welding it all back up...

I've been chatting with some people at other tuner forums. Seems to be a lot more people over there that are very knowledgeable on suspension tuning than here. They seem to echo the fact that no commercial kit will do what i'm looking for and that it is a true DIY job if you have the machining/welding skills.

Logan Ty 02-25-2018 12:35 AM


Originally Posted by SALEEN961 (Post 5676790)
What are you trying to accomplish by "fixing the suspension geometry", what is the truck doing that you don't like, what would you like it to do, and what is it that is concerning you about your current setup?

Knowing what your goals are will allow people to give you much more helpful responses as there is no ideal suspension geometry, there are just too many different use cases and too many valid ways of setting up a suspension system for one set of parts or angles to be the answer in every scenario.

I really want to keep it at 2.5 inches of lift in the front but I am curious what type of trouble I will run into if I don’t do something for example will my cv axles go bad as a result of not being at oem spec? My front tires are wearing on the outside and I saw a thread that it could be from incorrect alrigment due to the increased hieght of a level. I am looking to do upper control arms and coil overs to fix some up ball joint angles and overall a better ride. But if anyone has any suggestions I would love to hear about them.

Logan Ty 02-25-2018 12:43 AM


Originally Posted by Rnlcomp (Post 5676475)
The only way to correct suspension geometry is to use a true lift kit. Leveling only kits suck.
.

I actually ran across a thread about wear on the outer part of my tires and I saw you had replied about the correct alignment measurements to fix the issue. I would like to thank you in advance for that and I plan on sharing that with the next shop that I let touch my truck. If I would happen to go the route of ucas and coilovers would this help me out in any way. I plan to keep my stock 20s but I really don’t like the look of a lifted truck on stock rims.

Logan Ty 02-25-2018 12:52 AM


Originally Posted by antony1103 (Post 5677647)
I'm in the same boat as you. I'm looking to add about 2" to the front of the truck to keep a decent rake when I AAL to the back, but I don't want to screw up the angles in the front, especially since I have a 4x4. I looked into cherry picking parts from a 4" lift kit and did the math. It just won't work out for such a small lift and the geometry will still be all wonky... You may be able to get away with doing that for 3", but for what I want with a 2" lift that won't cut it. Bare minimum would be to make your own cross members, diff drop, and driveshaft spacer. Extending the steering knuckle would be tough, unless you were really crafty and could cut down a 4" lift knuckle to size and welding it all back up...

I've been chatting with some people at other tuner forums. Seems to be a lot more people over there that are very knowledgeable on suspension tuning than here. They seem to echo the fact that no commercial kit will do what i'm looking for and that it is a true DIY job if you have the machining/welding skills.

I had the exact same thought of buying a 4 inch lift and just using the cross members and spindles until I realized that it wouldn’t work. Like you said it would have to be all custom made and unfortunately I do not have the skill. I did see that Bajakits had a thread of doing 4 inch lift spindles on a 2wd and someone had asked about them coming up with a 4wd version and they said if 4 people placed deposits they would develop a kit but it never went anywhere.

Logan Ty 02-25-2018 12:58 AM

[QUOTE=Logan Ty;5678215]

My goal is to keep the leveled look on stock 20s.

RLXXI 02-25-2018 09:50 AM


Originally Posted by Logan Ty (Post 5678229)
I had the exact same thought of buying a 4 inch lift and just using the cross members and spindles until I realized that it wouldn’t work.

What year and 2 or 4wd?
.

Logan Ty 02-25-2018 10:16 AM


Originally Posted by Rnlcomp (Post 5678411)
What year and 2 or 4wd?
.

it is a 2013 4wd


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