Teraflex Rear SpeedBumps: Adding additional stop length. - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 4 Old 03-23-2013, 06:16 PM Thread Starter
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Teraflex Rear SpeedBumps: Adding additional stop length.

Got a situation with my rear 4" SpeedBumps (the canister type, not the Pre-Runner) where it's obvious they don't provide enough stop. A few things, the shocks (Billy 5100s) are compressing right to the end of their travel, the rear lower control arms (TF long arms) are potentially going to hit the brackets on full stuff, and worst, the rear pinion yoke is hitting the tank when the passenger rear is fully stuffed. So, I've been looking for a way to add about one inch of additional upper stop, which should cure the illnesses. Unfortunately all I can come up with on hand are the old Teraflex upper stops, which I call "egg cups", and TF's strike pads, which combined add about 2" - 2 1/4", which is a bit too much travel limitation. Called TF yesterday and they didn't really have much of a solution. From the instructions I take it the SpedBumps are supposed to work OK with just the stock yellow foam upper jounce snubbers, but no good on mine. Another might be to add 1" under the SpeedBump, but I have no idea how to extend the mounting bolts. They'd be too short as is.

Anyone know of an extended upper rear stop that might work for just a 1" extension? Only solution I can think of would be to cut 1" off the old egg cups. Thanks!

'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.
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post #2 of 4 Old 03-23-2013, 07:04 PM
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see if you can find some box tubing 1" thick X the width of the speedbumps and bolt the bump to the top and bolt the bottom to the pad or try to take the speedbumps apart and get a longer bolt in there? you might be able to pull the top screw off the bump and add a longer screw and pad to the top of the speedbump?

Last edited by ibjammin; 03-23-2013 at 07:12 PM.
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post #3 of 4 Old 03-24-2013, 09:19 AM Thread Starter
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Thanks, some good ideas! I hadn' thought about adding a puck or something to the top of the SpeedBump. Going to pull one off today and see what's feasible. The TF rep, Doug, said the cap can be removed without worry and that the mounting bolts are accessible inside. So, we'll see what's possible and report. Leaving for Moab in the AM, so some hustle necessary.

'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.
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post #4 of 4 Old 03-24-2013, 11:56 AM Thread Starter
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Ok, this turned out to be a piece of cake. All I had to do was remove the cap on the SpeedBump and add a spacer under it, in this case a 1/2" stack of washers. A few photos to illustrate.

Here's your garden variety 4" rear SpeedBump. On my rig they're about 1/2" too short to prevent the issues I was refering to above:



Unscrew the countersunk allen bolt on top and here's what's underneath:



Determine how much extra stop you want and add that amount of spacer under the cap. All I had on hand was a bunch of washers, I just stacked them up until I got 1/2" compressed:



Carefully put the cap back on and snug down the allen screw. Done:



Quick & dirty for sure. The screw is long enough you can add about 1/2 - 3/4" of spacer without worry, but any more than that I'd source a longer screw and maybe have a wider spacer made. I took it out on the neighborhood test rock and the extended SpeedBump worked like a charm. Teraflex guys feel free to jump in and tell me this is all f'd up, but it seems to be the simplest solution to my issues.

'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.

Last edited by SoK66; 03-24-2013 at 11:58 AM.
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