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Unread 02-03-2009, 08:37 AM   #1
Escape311
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RE 2.5. Why is it so BoUnCy!?***SOLVED MOSTLY***

So I just got my RE 2.5 installed (93 YJ) and everything went mostly well except I had to flip the rear shocks upside down because they wouldn't fit at the time. I've since been told that they should fit after the full weight of the vehicle is on the axle but I haven't had a chance to try that yet. But at any rate, it's incredibly bouncy in the back end. My other thought was that if I remember correctly the original front leaf spring packs had 5 leafs and the rears had 4. With this kit, all springs had 5 leafs. What might be the more likely cause of the bounce? Can upside down hydros really make it that bouncy or is more likely the leafs? Anybody have this issue? TIA.

UPDATE: Ok, so today, I dropped the air pressure down to 25psi from 35psi. Apparently when I had the tires mounted they put 35psi in them. Ouch. I also pulled all of the leaf spring bushings out and greased EVERYTHING with some lithium grease. Then I left all bolts loose, set the Jeep on the ground and bounced it several times pretty good, then torqued all the shackle bolts to 50 ft-lbs as suggested. It definitely rides MUCH better. I would imagine after some more miles it will be even better but for now I'm very happy with the result. Thank you all for the ideas and information!!


Last edited by Escape311; 02-04-2009 at 06:47 PM..
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Unread 02-03-2009, 10:15 AM   #2
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I'm no expert, but I've heard that a shock mounted upside down (when it's not designed to be upside down) allows more/some travel without resistance.

What I do know, my RE2.5 rides soft, no bounce.
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Unread 02-03-2009, 10:23 AM   #3
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Check your shackles - are they too tight? It took my RE 4" a while to break in as well.
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Unread 02-03-2009, 10:25 AM   #4
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My RE springs were pretty bouncy for the first few hundred miles. Now it rides pretty nice. I torqued my shackles down to 50 pound-feet. That helped, too.
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Unread 02-03-2009, 10:41 AM   #5
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X3 on checking your shackle torque specs. is your kit the HD? all kits tend to bounce and be harsher than the stock ride until they settle down after 500 or so miles
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Unread 02-03-2009, 07:18 PM   #6
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UPDATE: I flipped the shocks and it only seems "somewhat" better. Unfortunately, I can't even tell you how tight the shackle bolts are because a friend of mine was putting that together while I was working on the front. What should the shackle bolts be torqued to? I'm guessing they should be greased considerably as well, right?
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Unread 02-03-2009, 07:19 PM   #7
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Quote:
Originally Posted by ritjobbie View Post
My RE springs were pretty bouncy for the first few hundred miles. Now it rides pretty nice. I torqued my shackles down to 50 pound-feet. That helped, too.
^^^^^^^^^^
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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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Unread 02-03-2009, 07:53 PM   #8
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Aaaah yes. I didn't see that ^^.

I think I may also drop the air pressure down in the tires. I'm pretty sure when I had them mounted they put 35psi in them.
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Unread 02-03-2009, 07:55 PM   #9
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Originally Posted by Escape311 View Post
Aaaah yes. I didn't see that ^^.

I think I may also drop the air pressure down in the tires. I'm pretty sure when I had them mounted they put 35psi in them.
That may help a lot! I usually run 25 PSI in my 33X12.50's, but one time I went to 32-35 to try & save gas......whew was that a mistake! It was bouncy as hell!

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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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Unread 02-03-2009, 07:56 PM   #10
CreepyCrawler95
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flipping ur shocks gives more wheel travel? does that require chaning shockmounts or just flipping the shocks?
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Unread 02-03-2009, 08:17 PM   #11
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Re

I've got the RE 2.5 ED, six leafs in front and six leafs in back on a 93 YJ and I have nothing but good to say about it. The ride is better then stock, no bounce. The flex is excellent. I also had to mount my rear shocks upside down.
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Unread 02-03-2009, 09:59 PM   #12
Escape311
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Quote:
six leafs in front and six leafs in back
Well, that rules out my curiosity about the 5 leafs all around.

It's the RE STD kit so I figured it should be somewhat "soft". I think I'll try the air pressure drop and check the torque on the shackle bolts.

Quote:
does that require chaning shockmounts or just flipping the shocks?
The shocks just get flipped upside down is all. No changing mounts or anything. ie: Body of the shock (fat part) gets mounted at the top.
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Unread 02-03-2009, 10:31 PM   #13
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Quote:
Originally Posted by CreepyCrawler95 View Post
flipping ur shocks gives more wheel travel? does that require chaning shockmounts or just flipping the shocks?
Flipping your shocks will not effect wheel travel. Shocks can only effect suspension travel in two ways. They can only extend to there max, and compress to there minimum. The direction you mount the shock does not change either of those. Now if the body of the shock is hitting something preventing the suspension from moving it needs attention. Really the only things that should determine your wheel travel are your bump stops and your springs and how much they droop.
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Unread 02-03-2009, 10:35 PM   #14
Escape311
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Also, I honestly can't figure out why but you're not supposed to mount shocks upside down unless they're designed for it.

Anybody have any insight to why you're not supposed to mount hydro shocks upside down?
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Unread 02-03-2009, 10:41 PM   #15
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Hydro shocks are not completely filled with fluid there is some air inside them. Some shocks if you mount them upside down the air pocket is where all the valving is. This makes your shock no longer hydraulic it is just some springs mounted on a rod. If the valving is just getting air passed through it there is no resistance to slow the shock down properly.
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