How much bump stop do i need?

[_tarabusaw]

I have mc 3.5” lift on 35” tires. I plan to go 37 maybe in 6 months to a year. How much bump stop do i need in the font and back?
???

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[chevymitchell]

You need enough to keep things from hitting. You’ll need to find the limiting factor. For most, it’s usually the fenders. Take the springs out and then Jack the axle up as high as it will go. Once parts start touching, stop. Take a measurement from the bottom of the jounce mount to the bump stop pad. Add 1/2”. That’s how much bump you should have.

 

[Chocolate Thunder]

You need enough to keep things from hitting. You’ll need to find the limiting factor. For most, it’s usually the fenders. Take the springs out and then Jack the axle up as high as it will go. Once parts start touching, stop. Take a measurement from the bottom of the jounce mount to the bump stop pad. Add 1/2”. That’s how much bump you should have.

Any practical, accurate way to do this without removing the springs?

 

[TKL223/3]

You need enough to keep things from hitting. You’ll need to find the limiting factor. For most, it’s usually the fenders. Take the springs out and then Jack the axle up as high as it will go. Once parts start touching, stop. Take a measurement from the bottom of the jounce mount to the bump stop pad. Add 1/2”. That’s how much bump you should have.

This is exactly what I did. It seems discouraging at first since you have to remove parts just to get measurements. You’ll be happy that you took the time to do it properly and save yourself a headache down the road.

 

[chevymitchell]

Any practical, accurate way to do this without removing the springs?

If you have a ramp or a way to go full stuff slowly and the ability to stop before destroying things; this would be the only other way. Outside of that, guess high and adjust down. If you think you need 3”, start at 4”. Go wheeling and when you’re at full stuff, see how much room you have and subtract.

 

[chevymitchell]

 

[chevymitchell]

It’s almost always the shock that will bottom out first. Gotta be careful. Use the shock as a guide and as the priority metric. If your tire hits the fender before the shock bottoms out, then use the fender as your bump limit. This is why the suspension should be tuned with the springs out and not on the trail. You could destroy your shocks in a heartbeat if you’re not careful. However, if you use the shock as the primary metric, you’ll be alright.

 

[Roky]

Any practical, accurate way to do this without removing the springs?

If you pay shipping back and forth, I’ll send you my ramp…

 

[AccuTunedJL]

There is always the easy way, and the correct way. Just depends on how much effort you want to put in. Check out this article also, very helpful for this topic
https://accutuneoffroad.com/how-to-measure-for-jeep-shocks/

*This is not suspension tuning, mostly just proper setup.

 

[firedude]

You need enough to keep things from hitting. You’ll need to find the limiting factor. For most, it’s usually the fenders. Take the springs out and then Jack the axle up as high as it will go. Once parts start touching, stop. Take a measurement from the bottom of the jounce mount to the bump stop pad. Add 1/2”. That’s how much bump you should have.

This is really the best way. I would be careful if someone recommends a certain set up. Lots of variables. It looks like you have 6 pak shocks?

Shipping on rokys ramp might be pricey. You could probably buy a forklift for same price.

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