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  #1  
Old February 26th, 2005, 15:57
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wrecklaw71 wrecklaw71 is offline
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unibody strengtheners/use what when?

I have an 01 xj when is it really necessary to install frame/unibody strengtheners? and what brand would you guys recomend.
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  #2  
Old February 26th, 2005, 17:15
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wescam wescam is offline
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Re: unibody strengtheners/use what when?

I don't know if this is what you mean, but I like the rock slider / unibody brace combo here http://www.detoursusa.com/xjrokslyders.php

I've just been shopping for rock rails/sliders and figure this one (with the brace) is pretty solid.

You can also just buy the unibody brace.

...... just from what I read searching around, people seem to like them (although costly)
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  #3  
Old February 26th, 2005, 17:49
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Mike L Mike L is offline
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Re: unibody strengtheners/use what when?

Check THIS product out from TNT Customs. I wish that would have been around before I plated my frame.

-Mike
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  #4  
Old February 26th, 2005, 19:01
motorcityxj motorcityxj is offline
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by Mike L
Check THIS product out from TNT Customs. I wish that would have been around before I plated my frame.

-Mike
I am glad they came out with it BEFORE i got around to plating mine. HMM finally the cold michigan winter actually saved me some time and agravation on this one. Looks like a winner to me, fair price even. Does anyone here have them yet ?
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  #5  
Old February 26th, 2005, 19:07
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wrecklaw71 wrecklaw71 is offline
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Re: unibody strengtheners/use what when?

I saw some frame strengtheners in a Rubicon Express magazine made by "currie " anyone seen these?
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  #6  
Old February 26th, 2005, 19:26
XJZ XJZ is offline
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Re: unibody strengtheners/use what when?

What are you trying to accomplish?

These frame sleeves will help protect the frame, but won't help too much as far as the frame flexing torsionally.
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  #7  
Old February 26th, 2005, 21:29
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by XJZ
What are you trying to accomplish?

These frame sleeves will help protect the frame, but won't help too much as far as the frame flexing torsionally.
Really? Care to define too much?
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Speak the Truth-Question with Boldness-Speak without fear.
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  #8  
Old February 26th, 2005, 21:51
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by XJZ
What are you trying to accomplish?

These frame sleeves will help protect the frame, but won't help too much as far as the frame flexing torsionally.

care to elaborate.....
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  #9  
Old February 26th, 2005, 22:04
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ArcticXJ ArcticXJ is offline
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Re: unibody strengtheners/use what when?

I think he means that even with the braces, unless the two framerails are tied together with extra crossmembers, they will still flex independent of each other.
Lateral bracing running between the two framerails would exponentially amplify the effect of this product.
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  #10  
Old February 26th, 2005, 22:43
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Re: unibody strengtheners/use what when?

most of the ones i have seen connect the front lower control arm frame bracket to the front rear leaf spring hangar bracket
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  #11  
Old February 26th, 2005, 23:57
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by wrecklaw71
most of the ones i have seen connect the front lower control arm frame bracket to the front rear leaf spring hangar bracket
He means side to side like the transmission crossmember. If you add a couple more braces from side to side that would also help stiffen up the unibody. If you could build a full length flat belly skid that would really stiffen it up. I have seen it done but it is hard to get every thing tucked up in there. To do so means either running no cat/muffler or building some kind of box in the sheetmetal so they can sit higher. JM2C.

-Mike
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  #12  
Old February 27th, 2005, 00:58
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by XJZ
What are you trying to accomplish?

These frame sleeves will help protect the frame, but won't help too much as far as the frame flexing torsionally.
x2, until XJEEPER and others can offer something more than rhetoric to prove you wrong.

The floor pan is already the strongest side of the XJ's torsion box. An X or shear panel behind the rear seat along with reinforcment around the A pillar-roof intersection and other corners in the door openings would do more to stiffen up the chassis
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  #13  
Old February 27th, 2005, 01:05
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Re: unibody strengtheners/use what when?

Quote:
Originally Posted by MaXJohnson
x2, until XJEEPER and others can offer something more than rhetoric to prove you wrong.

The floor pan is already the strongest side of the XJ's torsion box. An X or shear panel behind the rear seat along with reinforcment around the A pillar-roof intersection and other corners in the door openings would do more to stiffen up the chassis
I was told sleeving the frame accomplished nothing really other than adding weight. I can understand plating the bottom so it doesn't get to bashed up on rocks but doing the whole outside isn't truly necessary. If you really want to strengthen the unibody then add a cage.

-Mike
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  #14  
Old February 27th, 2005, 01:21
XJZ XJZ is offline
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Re: unibody strengtheners/use what when?

Bingo!
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  #15  
Old February 27th, 2005, 06:41
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Re: unibody strengtheners/use what when?

cage it.
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