IRO Critical Path long Arm Upgrade?
Senior Member
Joined: Feb 2013
Posts: 812
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From: Kansas City, MO
Year: 1996
Model: Cherokee
Engine: 4.0
Is it as sturdy as running 2 UCA's? No, but is it enough to handle what most any of us are going to throw at it? Probably. If that design was as dangerous as people who've never used them made out they would not still be selling them, as IRO would be getting their backsides handed to them in court with multiple wrongful death lawsuits...
Senior Member
Joined: Jan 2011
Posts: 653
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From: Lynchburg, VA
Year: 1997
Model: Cherokee
Engine: 4.0L I6
I really don't understand this complaint about IRO's setup. You just built a 3 link, right? How many bolts do you have keeping your axle from folding under your rig?
Is it as sturdy as running 2 UCA's? No, but is it enough to handle what most any of us are going to throw at it? Probably. If that design was as dangerous as people who've never used them made out they would not still be selling them, as IRO would be getting their backsides handed to them in court with multiple wrongful death lawsuits...
Is it as sturdy as running 2 UCA's? No, but is it enough to handle what most any of us are going to throw at it? Probably. If that design was as dangerous as people who've never used them made out they would not still be selling them, as IRO would be getting their backsides handed to them in court with multiple wrongful death lawsuits...
Senior Member
Joined: Feb 2013
Posts: 812
Likes: 0
From: Kansas City, MO
Year: 1996
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Apr 2012
Posts: 1,659
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From: Dayton OH
Year: 1995
Model: Cherokee
Engine: 4.0
okay, you can not say that accurately, if you look at reviews of people who actually run the IRO, you will find many many more positive than you will find negative, also you will find that few people have ACTUALLY had the caster adjustment bolt fail. it does SEEM sketchy, but in reality it isn't really that bad
CF Veteran
Joined: Jan 2013
Posts: 1,053
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From: columbia, pa
Year: 2000
Model: Cherokee
Engine: 4.0
Old School CF Moderator
Joined: May 2010
Posts: 9,652
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From: Chattanooga
Year: 2001
Model: Cherokee
Engine: 4.0
Senior Member
Joined: Feb 2013
Posts: 812
Likes: 0
From: Kansas City, MO
Year: 1996
Model: Cherokee
Engine: 4.0
Of course, in many cases you can double shear strength by increasing the grade or class of bolt being used. So perhaps one 10mm class 10.9 bolt may be just as strong or stronger than 2 rusty ole stock bolts...
1=2 or 1>2...?
Whoa now!
Old School CF Moderator
Joined: May 2010
Posts: 9,652
Likes: 3
From: Chattanooga
Year: 2001
Model: Cherokee
Engine: 4.0
?
A 10mm Bolt is between a 3/8 and 7/16.
A 5/8 Bolt is 16mm.
Strength of the 5/8 bolt is much greater than that of a 10mm.
Assuming they are both Grade 8.
A 10mm Bolt is between a 3/8 and 7/16.
A 5/8 Bolt is 16mm.
Strength of the 5/8 bolt is much greater than that of a 10mm.
Assuming they are both Grade 8.
CF Veteran
Joined: Jan 2013
Posts: 1,053
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From: columbia, pa
Year: 2000
Model: Cherokee
Engine: 4.0
http://k-tbolt.com/bolt_chart.html
The bolt that comes with the IRO kit for the caster is a 10.9 grade.
The bolt that comes with the IRO kit for the caster is a 10.9 grade.
Last edited by pmondo; Mar 26, 2013 at 11:20 AM.
Cherokee Forum Vendor
Joined: Mar 2011
Posts: 1,448
Likes: 2
From: Lynden, WA
Year: 1998
Model: Cherokee
Engine: 4.0
It's not even necessarily about the strength of the bolt guys. A 10mm hole will wollow out much easier than a 5/8" bolt. Especially when that bolt is fed through 1/8" sheet vs 1/4" plate.