Silly lean toward passenger after 2.5 spacer lift

[ShadowsPapa]

Why would you ever try to compensate for 150 lbs +/- fuel that will always vary? Passenger and cargo weight does that.

I have a Clayton lift and I’ve never noticed it leaning. No disappointment.

And yet the factory springs do just that - stiffer spring to the right on gassers.
There are different spring numbers for each corner. It's been that way for decades.
When I measured my past JTs, they were almost always within a quarter inch of each other side to side. The difference varied a bit with how much fuel it had, but at the half-way mark, it was almost totally even.

I've still got the numbers I wrote down from back then.

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[Stan H]

Why would you ever try to compensate for 150 lbs +/- fuel that will always vary? Passenger and cargo weight does that.

I have a Clayton lift and I’ve never noticed it leaning. No disappointment.

Yes my tera flex lift didn't either . I believe its something else.

 

[smlobx]

I have had it with 2 Lifts, One installed in my Garage and the other on a Lift. My Neighbor got a AEV lift installed Professionally and has a 1/2 inch lean on the passenger side. I went over to my Jeep dealer and measured a gladiator with the Mopar lift and There was also a 1/2 lean to the passenger side.

When I installed the AEV lift on my JTR it came with a shim to put on the right side to compensate for the added weight of the fuel tank. I left it off because I have an additional gas tank on the drivers side as well.

 

[Stan H]

When I installed the AEV lift on my JTR it came with a shim to put on the right side to compensate for the added weight of the fuel tank. I left it off because I have an additional gas tank on the drivers side as well.

I never worried about it cause I sit in mine. I dont stare at it all the time . No offense OP but I dont even see the issue with the ½ stuff . Go sit in it then have someone else look at it for you.

 

[Ordnanceman20]

Why would you ever try to compensate for 150 lbs +/- fuel that will always vary? Passenger and cargo weight does that.

I have a Clayton lift and I’ve never noticed it leaning. No disappointment.

Because even the stock spring address this issue. That kinda the point...... If I'm throwing a $3200 lift on my truck, Id rather have it function like stock or better...

 

[Wheelin98TJ]

Because even the stock spring address this issue. That kinda the point...... If I'm throwing a $3200 lift on my truck, Id rather have it function like stock or better...

Lift springs have a higher spring rate and can carry more weight. Probably why I don't see any lean on mine.

 

[ShadowsPapa]

Lift springs have a higher spring rate and can carry more weight. Probably why I don't see any lean on mine.

The ones I used were longer to lift the truck. That way it kept the nice ride.


One thing people need to be really sure of no matter the method - springs, spacers, magic dust, loosen all control arm ends and when the lift is installed, make sure it's sitting on the ground THEN tighten/torque all fasteners, esp for control arms, track bar and so on.
Some run into trouble by trying to shortcut the process because, damn, those control arm bolts are hard to reach, or tight, or whatever the excuse is (or they didn't know any better)

 

[Wheelin98TJ]

The ones I used were longer to lift the truck. That way it kept the nice ride.


One thing people need to be really sure of no matter the method - springs, spacers, magic dust, loosen all control arm ends and when the lift is installed, make sure it's sitting on the ground THEN tighten/torque all fasteners, esp for control arms, track bar and so on.
Some run into trouble by trying to shortcut the process because, damn, those control arm bolts are hard to reach, or tight, or whatever the excuse is (or they didn't know any better)

Weren't they also stiffer?

Usually you have to make them stiffer when they are longer.

Or maybe they were fairly short?

 

[ShadowsPapa]

Weren't they also stiffer?

Usually you have to make them stiffer when they are longer.

Or maybe they were fairly short?

Longer. Quite a bit. Had to compress them to get them in.

You can lift just be making the same rate of spring longer, which is all a spacer lift does.
If you get into the higher lifts, then the rates start to rise, but not by a lot.
Laying side-by-side with the original springs, they were quite a bit longer, but the ride was not at all harsher or stiffer, it was still like original ride.
Since I added weight to the front - I did go with the dual rate springs - a lot longer, with a slightly higher rate for the second rate.

 

[Wheelin98TJ]

Longer. Quite a bit. Had to compress them to get them in.

You can lift just be making the same rate of spring longer, which is all a spacer lift does.
If you get into the higher lifts, then the rates start to rise, but not by a lot.
Laying side-by-side with the original springs, they were quite a bit longer, but the ride was not at all harsher or stiffer, it was still like original ride.
Since I added weight to the front - I did go with the dual rate springs - a lot longer, with a slightly higher rate for the second rate.

They have to get stiffer, or use a stiffer dual rate, as they get taller because our springs have a high slenderness ratio.

If you keep the same rate and just make the spring longer, they will buckle and bow too much.

 

[JeepOfTheseus]

Damn! You have one of those?! Can I borrow it?

 

[ShadowsPapa]

They have to get stiffer, or use a stiffer dual rate, as they get taller because our springs have a high slenderness ratio.

If you keep the same rate and just make the spring longer, they will buckle and bow too much.

After a certain height, they do.
And some springs worse than others. Synergy guarantees their springs to not bow.
But you have to keep the axle in the right place -

Some companies like Clayton jump right into higher rates right away, others do not, I guess showing some springs are just made a bit better, while others have to have the stiffness to keep things straight.
There's a lot of comparing of rates in some other forums, and it's interesting to note, that not all companies jump into the higher rates right away, some go into crazy stiffer springs (30% higher rates or more) just for a 3" lift or so while another company is only 5 to 10% higher rates.

 

[Wheelin98TJ]

After a certain height, they do.
And some springs worse than others. Synergy guarantees their springs to not bow.
But you have to keep the axle in the right place -

Some companies like Clayton jump right into higher rates right away, others do not, I guess showing some springs are just made a bit better, while others have to have the stiffness to keep things straight.
There's a lot of comparing of rates in some other forums, and it's interesting to note, that not all companies jump into the higher rates right away, some go into crazy stiffer springs (30% higher rates or more) just for a 3" lift or so while another company is only 5 to 10% higher rates.

Do you know what the factory coil rates are? I've been looking for a reliable source for this.

 

[ShadowsPapa]

Do you know what the factory coil rates are? I've been looking for a reliable source for this.

I think I have some - maybe, but my mind is scrambled by pain killers now so I won't swear to or sign my name to anything right now. (some would say -so what else is new?)

 

[Stan H]

They have to get stiffer, or use a stiffer dual rate, as they get taller because our springs have a high slenderness ratio.

If you keep the same rate and just make the spring longer, they will buckle and bow too much.

Probably just stiffer in the middle

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