IFS / IRS Onna Jeep - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > General Jeep Discussion

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-15-2010, 08:59 AM   #1
Jeeper
 
YAHAHA's Avatar
 
Join Date: Jan 2010
Posts: 774
IFS / IRS Onna Jeep

Anybody ever toy with the thought of Independent Front Suspension & Independent Rear Suspension on their Jeep?

Of all the 4wd vehicles I've owned, the Jeep is the only one that has solid axles in both front and rear. Off-road racing trucks and the like use the IS on all corners. Other than "that's the way it's always been," is there any good reason not to have IFS/IRS on the Jeep?

Has anybody installed this either in front or rear of their Jeep? I'm curious to know the pros & cons.

YAHAHA is offline   Quote Quick Reply
Old 04-15-2010, 09:15 AM   #2
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
you could sell your jeep and buy a hummer,sorry im hostile today

ifs doesnt flex,and really expensive to lift

__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 09:27 AM   #3
Sponsoring Vendor
 
Join Date: May 2009
Posts: 4,612
Rules to live by: Don't post threads with "IRS" in the headline on April 15th.

Yahaha: You have an amazing ability to think outside the box. You want to put Renegade fenders on a TJ. You want to put independent suspension on a Wrangler. This is absolutely opposite of what most people want, and it is absolutely awesome! The great gains in civilization were not made by people who thought the same as everyone else. So keep it up! But in this case, you are probably wrong.

Independent suspension is better in virtually every situation. Better ride, better handling. But less strong, less flex (as 04tj points out), and more complicated. It's why so many Toyota owners scour junkyards looking for solid front axles.

This may change. There's a competition rock crawler guy who has built a buggy with IFS - he says it's better, especially now that rock crawling competitions frequently include stretches of speed racing. He says the IFS is plenty strong. And he's winning, so I guess he's right. And we see plenty of Toyotas on really tough trails with their IFS still intact.
Geoff@Bestop is offline   Quote Quick Reply
Old 04-15-2010, 09:31 AM   #4
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
Quote:
Originally Posted by Geoff@Bestop View Post
Rules to live by: Don't post threads with "IRS" in the headline on April 15th.

Yahaha: You have an amazing ability to think outside the box. You want to put Renegade fenders on a TJ. You want to put independent suspension on a Wrangler. This is absolutely opposite of what most people want, and it is absolutely awesome! The great gains in civilization were not made by people who thought the same as everyone else. So keep it up! But in this case, you are probably wrong.

Independent suspension is better in virtually every situation. Better ride, better handling. But less strong, less flex (as 04tj points out), and more complicated. It's why so many Toyota owners scour junkyards looking for solid front axles.

This may change. There's a competition rock crawler guy who has built a buggy with IFS - he says it's better, especially now that rock crawling competitions frequently include stretches of speed racing. He says the IFS is plenty strong. And he's winning, so I guess he's right. And we see plenty of Toyotas on really tough trails with their IFS still intact.
when i was at the stealership,we ran away when lifted duramaxes came in
__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 09:35 AM   #5
Sponsoring Vendor
 
Join Date: May 2009
Posts: 4,612
Quote:
Originally Posted by 04tjrubicon View Post
when i was at the stealership,we ran away when lifted duramaxes came in
But the chicks dig 'em!
Name:  a1.jpg
Views: 2071
Size:  6.7 KB
Geoff@Bestop is offline   Quote Quick Reply
Old 04-15-2010, 09:49 AM   #6
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
Quote:
Originally Posted by Geoff@Bestop View Post
But the chicks dig 'em!
Attachment 18110
all show no go
__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 09:51 AM   #7
Jeeper
 
adamag25's Avatar
 
Join Date: Nov 2008
Location: NJ
Posts: 50
IFS is ok....Not great, not good, but ok. To make and independent suspension work for really serious wheeling you would need to go with really long upper and lower arms that will give more flex. Some of the problems with the IFS you find in Jeeps like the Commander and Grand are things like upper ball joints. Guys have snapped them off like a twig because they just cant handle the really hard beating especially if the suspension is out of norm from a lift. Another issue are the CV and steering shafts. They limit travel by having a narrow range of movement before binding or blowing apart. There are some great IFS setups out there, as geoff mentioned, but they are fairly complicated. Basically, to take a solid axle and convert into an IFS/IRS will either cost you flex or cost you money...
adamag25 is offline   Quote Quick Reply
Old 04-15-2010, 09:54 AM   #8
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,623
Quote:
Originally Posted by 04tjrubicon View Post
you could sell your jeep and buy a hummer,sorry im hostile today

ifs doesnt flex,and really expensive to lift PROPERLY
fixed it.

When I was wrenching, I can't even count the number of control arms I had to replace when a kid would lift his chevy, and then end up ripping the ball joints out, or some other exciting thing.

with IRS, there's a lot more to contend with (aka break) when lifting, lowering, offroading, etc....
__________________
#2 Jeep http://www.wranglerforum.com/f322/99...ld-819418.html
99 Sahara, automatic.
mrcarcrazy is offline   Quote Quick Reply
Old 04-15-2010, 09:59 AM   #9
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
like this??


__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 10:23 AM   #10
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,623
Wow, that looks familiar
__________________
#2 Jeep http://www.wranglerforum.com/f322/99...ld-819418.html
99 Sahara, automatic.
mrcarcrazy is offline   Quote Quick Reply
Old 04-15-2010, 10:27 AM   #11
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
Quote:
Originally Posted by mrcarcrazy View Post
Wow, that looks familiar
haha
__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 10:39 AM   #12
Sponsoring Vendor
 
Join Date: May 2009
Posts: 4,612
Quote:
Originally Posted by adamag25 View Post
..the IFS you find in Jeeps like the Commander and Grand ..
The Grand Cherokee had solid axles up to the end of the WJ (2004?). Cuz Grand Cherokees used to be KEWL!
Geoff@Bestop is offline   Quote Quick Reply
Old 04-15-2010, 10:40 AM   #13
Jeeper
 
04tjrubicon's Avatar
 
Join Date: Apr 2010
Location: the 918
Posts: 75
uber kewl
__________________
I'm not crazy and neither am I
Keeping it real since '86
I run over small woodland kritters

http://www.rokmen.com/banners/rokmen_sig.JPG
04tjrubicon is offline   Quote Quick Reply
Old 04-15-2010, 10:42 AM   #14
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Another problem with IFS, is,aftermarket support (think finances), because

The IFS uses more universals(CV joints/boots/flanges) and seemingly weaker front diffs

Alignments are more prevalent to changes and overflexing--breaks things !!

------Just FAGETABOUTIT----------------------
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 04-15-2010, 11:34 AM   #15
Jeeper
 
adamag25's Avatar
 
Join Date: Nov 2008
Location: NJ
Posts: 50
Quote:
Originally Posted by Geoff@Bestop View Post
The Grand Cherokee had solid axles up to the end of the WJ (2004?). Cuz Grand Cherokees used to be KEWL!
Thats true, I should have specified that it was the -K generation Jeep vehicles like the Grand's and ect.... That being said, there is a very good reason that they left a solid front axle under the wrangler JK and the other models have IFS. Its not just for the "kewl" factor, the solid axle is much better suited for the application that the wrangler is intended for (offroad). I do wheel my Commander but the truth is that Jeep had more of an "urban" application in mind when they designed it and the other IFS models.
adamag25 is offline   Quote Quick Reply
Old 04-15-2010, 05:04 PM   #16
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,199
Quote:
Originally Posted by Geoff@Bestop View Post
Rules to live by: Don't post threads with "IRS" in the headline on April 15th.

Yahaha: You have an amazing ability to think outside the box. You want to put Renegade fenders on a TJ. You want to put independent suspension on a Wrangler. This is absolutely opposite of what most people want, and it is absolutely awesome! The great gains in civilization were not made by people who thought the same as everyone else. So keep it up! But in this case, you are probably wrong.

Independent suspension is better in virtually every situation. Better ride, better handling. But less strong, less flex (as 04tj points out), and more complicated. It's why so many Toyota owners scour junkyards looking for solid front axles.

This may change. There's a competition rock crawler guy who has built a buggy with IFS - he says it's better, especially now that rock crawling competitions frequently include stretches of speed racing. He says the IFS is plenty strong. And he's winning, so I guess he's right. And we see plenty of Toyotas on really tough trails with their IFS still intact.
Are you running for political office?
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-15-2010, 05:10 PM   #17
Sponsoring Vendor
 
Join Date: May 2009
Posts: 4,612
Quote:
Originally Posted by daggo66 View Post
Are you running for political office?


After a long conversation with my family, my religious advisers, my political mentors, and my constituents I can firmly state that I have not yet decided whether or not to run for office. I am accepting donations, however.
Geoff@Bestop is offline   Quote Quick Reply
Old 04-15-2010, 05:33 PM   #18
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
I think you need to look at some King of the Hammers rigs. They are 99% solid axle front and rear, and do ~95mph through the desert. It's all about suspension tuning, especially your shocks. This year the majority of them ran a single dual-rate coil over and a double or triple by-pass shock at each corner. Also check out the Stock Baja class... there are a couple of Dodge Power Wagon's that run solid axles (even leaf springs in the rear!) and do 90+mph in the desert. Again, it's all about suspension tuning.

AzTJ is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jeep towing problem IBHIPRU General Jeep Discussion 6 05-29-2012 06:33 PM
Biggest Jeep Freek Contest!!!! txoutdoorx4 Classifieds Archive 6 02-21-2011 10:48 AM
Buying a Jeep Mitre7 YJ General Discussion Forum 8 01-29-2010 07:11 PM
Parts Vanimal00000 TJ General Discussion Forum 6 01-28-2010 08:06 AM
History of the Jeep. George T. General Jeep Discussion 8 02-04-2009 01:03 AM



» Featured Product

All times are GMT -5. The time now is 03:30 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC