jku spings on a tj completed
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JK Enthusiast
Joined: May 2012
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From: Conway, SC
jku spings on a tj completed
This weekend my son and I installed jk 17/89 springs into his 03 tj. It went pretty easy once we figured how to open the one end of the rear springs.
The TJ is a 2003 soft top with 1/2 doors 4cyl and 5 speed. We had a BB on it 2" and procomp shocks so we did not use the rubi shocks. Now we have the jk springs on the rear and the front still needed the BB pucks to keep it close to level. The rear is still a little higher but only by maybe 1/2 inch.
The only mods you have to do is open the bottom of the rear spring to fit over the bump stop plate on the bottom perches. We did this by heating the coil with a small propane torch. We only heated the spot that we wanted on the spring to move. We took the upper bump stop cup off and used it as a template to know when we had it open enough. We heated the spring while it was in a bench vise and put a pipe over the tip we were trying to open. This took about 1/2 hour per spring. We let them cool down by themselves with out water or anything to speed it up. They did seem to shrink a little once cooled so we learned on the 2nd one to open it a little farther to account for the cooling effect.
The ride is better, we went over some RR tracks and it was not as jarring. Total with the time it took to mod the springs, remove old, install jk springs and test drive the jeep was 5 hours. Not bad for doing it in the driveway on a couple jack stand.
The TJ is a 2003 soft top with 1/2 doors 4cyl and 5 speed. We had a BB on it 2" and procomp shocks so we did not use the rubi shocks. Now we have the jk springs on the rear and the front still needed the BB pucks to keep it close to level. The rear is still a little higher but only by maybe 1/2 inch.
The only mods you have to do is open the bottom of the rear spring to fit over the bump stop plate on the bottom perches. We did this by heating the coil with a small propane torch. We only heated the spot that we wanted on the spring to move. We took the upper bump stop cup off and used it as a template to know when we had it open enough. We heated the spring while it was in a bench vise and put a pipe over the tip we were trying to open. This took about 1/2 hour per spring. We let them cool down by themselves with out water or anything to speed it up. They did seem to shrink a little once cooled so we learned on the 2nd one to open it a little farther to account for the cooling effect.
The ride is better, we went over some RR tracks and it was not as jarring. Total with the time it took to mod the springs, remove old, install jk springs and test drive the jeep was 5 hours. Not bad for doing it in the driveway on a couple jack stand.
Last edited by plntman; Oct 21, 2012 at 05:12 PM.
