Front end bottoming out

[wingdog]

I am at ~4000 miles and my JLUD sport front end already bottom out twice on regular speed bumps and dips. I found the issue on JT forum but nobody seems to have the same thing here.

https://www.jeepgladiatorforum.com/...spension-bottoming-out-on-normal-roads.39462/

The part number of the front coil spring is 68416581AA and I can't find any useful info about it. I thought all diesel get the same springs so is it possible the factory installed the wrong spring on my rig?

Thanks,
Michael

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[Moto_21]

The main problem is lack of up travel

 

[GATORB8]

I believe you have extended bump stops in the coil bucket stock on the diesel. Similiar to the XR.

 

[Fuel Fire Desire]

My factory sport bottomed out all the time. I had so much front sag I only had about 1-1.5” of travel left after I added a bumper and winch. I ended up doing a Mopar lift and have about 4” of travel now and haven’t hit bottom since. Smoother ride too. The factory springs are just too soft for the amount of travel allowed.

 

[wingdog]

Glad to know I am not alone!

What's the best way to raise the front with the right up travel? The rear is about 2" taller than the front now so I hope I can just swap the front springs with firmer ones from mopar to level it out.

Thanks,
Michael

 

[TheBirdie72]

Maybe try some rubi takeoff suspension parts? Worked well for me. ?

 

[wingdog]

Somehow I remember all diesels have the same springs. While I am up to try Rubi takeoff springs I would like to confirm it's indeed firmer than my current setup. I found this but unfortunately my spring's part # is not listed there.

https://www.jlwranglerforums.com/forum/threads/3-0-jlur-factory-spring-part-numbers.43915/

Thanks,
Michael

 

[GATORB8]

Do you like the stock ride (other than bottoming out)? Spacers will directly add up travel without impacting your ride quality since spring rate will remain the same.

 

[wingdog]

I thought spacer kit just lift the car while keeping similar up travel since you get both spring and bump spacers to avoid coil bind. Otherwise it sounds like a cheap and easy solution.

 

[Wrangler man]

I am at ~4000 miles and my JLUD sport front end already bottom out twice on regular speed bumps and dips. I found the issue on JT forum but nobody seems to have the same thing here.

https://www.jeepgladiatorforum.com/...spension-bottoming-out-on-normal-roads.39462/

The part number of the front coil spring is 68416581AA and I can't find any useful info about it. I thought all diesel get the same springs so is it possible the factory installed the wrong spring on my rig?

Thanks,
Michael

I also have a JLUD and I used to bottom out on all the same dips and bumps that my JKU never did. ( and that was when I had plastic bumpers) I was a bit disappointed. Saved my money went with Metalcloak Game Changer lift actually put the 3.5 Springs in the front because I upgraded to a steel bumper and a winch and the 2.5 Springs in the back. It's perfectly level looks awesome. Never a fan of spacers/hockey pucks. It drives great doesn't bottom out at all anymore. The stock diesel springs may be different but they're not sufficient it will not drive well. Strongly recommend going aftermarket. If you can afford it do Clayton they are the best, and have a diesel specific lift kit. Top it off with the Icon shocks and you will have a great ride.

 

[BradyW]

The problem is lack of up travel. You are sitting on 3” or less up travel currently. Add a 2.5” lift and no additional bump stops and you’ll be in much better shape. (4.5”-5” of up travel) I went through the same issues on my XR. I catalog upgrading shocks before lifting in my build thread and lifting is required to address the issue.

 

[GATORB8]

I thought spacer kit just lift the car while keeping similar up travel since you get both spring and bump spacers to avoid coil bind. Otherwise it sounds like a cheap and easy solution.

Don’t add bump stop, just some spring spacer. With the bump extension from the factory, you should be fine with coil bind unless you go over probably 2”.
Drive one wheel up on something and try to get close to the bump and see how much coil space you have to confirm.

 

[BradyW]

Don’t add bump stop, just some spring spacer. With the bump extension from the factory, you should be fine with coil bind unless you go over probably 2”.
Drive one wheel up on something and try to get close to the bump and see how much coil space you have to confirm.

I would definitely stay under 2” with factory-length front shocks. Otherwise, you run the risk of having less than an inch of down travel in the shock and it’s going to ride terribly in a new way in that scenario.

 

[GearWhore]

The lack of up-travel is the culprit. And the weight of the diesel over the front axle. I still have bottom-out issues, even with 2.5" MetalCloak lift. I did limit the bump stop spacers when I installed the lift to reduce it, but still an issue.

One thing that did help, is the DuroSpring bump stops. The are more progressive than the factory rubber. Teraflex had something similar, at least for the JK. Basically a longer, softer bump stop replacement. Fox, Teraflex, and King all make hydraulic bump stop replacements too, that may help, but they are expensive!

 

[Moto_21]

The lack of up-travel is the culprit. And the weight of the diesel over the front axle. I still have bottom-out issues, even with 2.5" MetalCloak lift. I did limit the bump stop spacers when I installed the lift to reduce it, but still an issue.

One thing that did help, is the DuroSpring bump stops. The are more progressive than the factory rubber. Teraflex had something similar, at least for the JK. Basically a longer, softer bump stop replacement. Fox, Teraflex, and King all make hydraulic bump stop replacements too, that may help, but they are expensive!

Teraflex arent hydro they are foam in a can

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