Front bump stops

[DirtyComanche]

2 hours ago, crumbscomanche said:

I bought the Daystar rubber bump stops for the 97-01 and it fit fine @DirtyComanche

 

 

Good to know.  I can buy those then.

[Swampy]

glad to know those daystar ones fit. I know there are two different parts numbers for pre-9 and post 97 when I was looking today don't remember if it was daystar, or rubicon express. Also I would like to know how those progressive stops work. Do you just throw them into the coil and that's that?

[HOrnbrod]

6 hours ago, crumbscomanche said:

I bought the Daystar rubber bump stops for the 97-01 and it fit fine 

 

How did they fit fine? Did you pull the existing rubbers from the screw-in original cups then press in the new Daystar rubbers? The rubbers look like they are different diameters.

[Swampy]

For the prothane progessive bumps do you need a cap on top of them? or can you run it in the coil spring without the cap?

[crumbscomanche]

I removed the original cup because the rubber/foam/whatever was on there from the PO had deteriorated to the point of crumbling whenever I applied pressure. When the cup was out the B.S. was pressed in and we secured it to the frame with a bolt.

 

I am not sure if the set up that I replaced was OEM, the PO had a minor front end collision that required replacement of a lot of those small parts 

[Eagle]

On 12/18/2017 at 7:15 PM, DirtyComanche said:

 

I'm not home but can almost guarantee they're a smaller metric thread.  M8 maybe.  Might be able to drill out and tap the inserts over to the larger SAE size.

 

Or turn down the ends of the 3/8" bolts and thread to the appropriate metric thread.

[Rubikahn]

Just replaced my bump stops, and wanted to update this thread. I ended up using a pipe wrench to get the old ones off after I soaked the threaded bolts for a few days with some FreeAll. The one that was still whole came off in a minute or two. The rusted/destroyed one took me like ten minutes to get off. There are access holes to the spots where the bump stop cups screw into up inside the engine bay. On the drivers side I had to remove the air box. You’ll see a round tiny grommet just above where the cups would be. Pull it off and spray down inside there. On the passenger side, it’s more of a pita. It’s under the ignition coil. I purchased TJ style cups and extended stops. Since these newer style don’t have a threaded stud on the top of the cup I had to use a bolt. I used an M10X1.50 on each after I chased the threads clean. Added a little never seize too just in case I ever need to take them back off. I used a breaker bar to leverage the extended stops into the cups after I coated the top lip of each one in dish soap. They popped right in. 

[Swampy]

On 12/18/2017 at 9:58 AM, DesertRat1991 said:

I also have the screw in type and need a longer set.  Does anyone know if the MJ uses the same OEM scew-in bumpstop as the TJ?  If so, these *might* work:

 

1997-2006 TJ Extended Bumpstop - Daystar 

 

 

 

Just wanted to update the thread. These do work on the front of an mj. I’ve had them for a bit now but I need to extend them more. 

[ghetdjc320]

1 hour ago, Swampy said:

Just wanted to update the thread. These do work on the front of an mj. I’ve had them for a bit now but I need to extend them more. 

The MJ’s I’ve had both had the push in style bump stop that doesn’t have the threaded piece. I’ve use the rubicon express bump stops twice now with good results. If you need a longer bump stop than that, use the puck style spacers on the axle side to take up the space. 

[DesertRat1991]

19 hours ago, Swampy said:

Just wanted to update the thread. These do work on the front of an mj. I’ve had them for a bit now but I need to extend them more. 

 

 

Glad to hear! 

 

Guess I'll update too... my '91 has the removable cups with the threaded stud.  I was able to remove the cup, pop out the OEM bump stop and replace it with: Daystar KJ09101BK. Then just screwed the cup back into place. 

 

The Daystar bump was actually a little to long for my application but it was easy to cut for a custom fit.