Someone tell me about jounce bumpers. What material is best? Are they really necessary? if they are, what's the best for the money?
Jounce bumpers
- Thread starter Lil' Jeepy
- Start date
Gonna need to provide a little more information on what you're looking to achieve here, what you use the jeep for, and what your current setup is.
The OEM foam ones are sufficient for stock and stock plus applications. Anything polyurethane is too hard and too harsh.
When I outboarded my rear shocks I went with Currie bump stops because they retain the spring... definitely beyond stock plus.
What are you trying to accomplish?
-Mac
When I outboarded my rear shocks I went with Currie bump stops because they retain the spring... definitely beyond stock plus.
What are you trying to accomplish?
-Mac
My tj is an occasional daily driver. The only extreme driving is when I drive in Toledo. I mostly just put around the neiborhoods or on the farm. I'm presently installing new shocks and noticed the rotted rubber pieces in the coil springs. I'd like to restore this as best I can but I wondered how important these are to a smooth ride.
Not really important if you're not hitting them.
But when you do...oh boy...you'll miss em.
They're pretty cheap and easy to replace. With a few swear words and a good pry bar you can wiggle them in without taking anything apart.
How rusted out are the cups?
-Mac
But when you do...oh boy...you'll miss em.
They're pretty cheap and easy to replace. With a few swear words and a good pry bar you can wiggle them in without taking anything apart.
How rusted out are the cups?
-Mac
Caps look good. Maybe I should look into replacing them after I get the shocks done.
It would be useful to explain what the purpose of the jounces are and how to make them perform that purpose. Doing so will address most of his concerns.
Find an OE replacement. The XJ shares the same jounce bumper. Its a foam, poly material - I can't remember specifically.
They're designed to slow the suspension down before the final impact (the metal cup they fit in, to the axle pad). Your shocks can act as a bumpstop, but having a bumpstop that compresses into the metal cup will slow the shock travel before they reach their collapsed limits. So yes, they're needed.
They're designed to slow the suspension down before the final impact (the metal cup they fit in, to the axle pad). Your shocks can act as a bumpstop, but having a bumpstop that compresses into the metal cup will slow the shock travel before they reach their collapsed limits. So yes, they're needed.
Much easier to do them at the same time, especially if you want to replace the cups. And hit them with some PBBlaster a day or so in advance.
JL wranglers and gladiators still use the same front jounces. The rears are different. They are easy to come by
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