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2.4 L DD from 4.11 to 4.56 good idea?
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=59753		 Page 1 of 1
Author:  m_volyrakis [ Mon Mar 28, 2011 6:29 pm ]
Post subject:  2.4 L DD from 4.11 to 4.56 good idea?
My '05 2.4 6 spreed export daily driver came stock with 4.11s.
As you all know 2.4 was not the best option as far as KJ engines are concerned.
But this is what I have to work with and changing it is not an option.

I was thinking that maybe changing the rack & pinion to 4,56 would make things better...

I know it's going to be a compromise, power vs top speed and I'm looking for some guidance/feedback.


Is it a good idea to begin with?
Has any one here done that already?

Oh! I'm also planning on having some 245/75/16son n a couple of weeks.(currently running on 255/65/16s)
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Author:  KJ Willy [ Mon Mar 28, 2011 6:31 pm ]
Post subject:  Re: 2.4 L DD from 4.11 to 4.56 good idea?
Not sure you can find 4.56 gears for the Dana 30a. If you swith to JBA steel dif then you could.
Author:  m_volyrakis [ Mon Mar 28, 2011 7:16 pm ]
Post subject:  Re: 2.4 L DD from 4.11 to 4.56 good idea?
Why do you say that? Will something like this
http://www.wildhorses4x4.com/product/da ... ons/Dana30
not fit my front diff?
Author:  KJ Willy [ Mon Mar 28, 2011 8:12 pm ]
Post subject:  Re: 2.4 L DD from 4.11 to 4.56 good idea?
No, the KJ's have a DANA 30A front housing and the ring and pinion is a different thickness then the dana 30.
Author:  tjkj2002 [ Mon Mar 28, 2011 8:19 pm ]
Post subject:  Re: 2.4 L DD from 4.11 to 4.56 good idea?
KJ Willy wrote:
No, the KJ's have a DANA 30A front housing and the ring and pinion is a different thickness then the dana 30.

Actually it's the pinion that is longer in the D30A then a regular D30.


Yep you must either get JBA's steel front diff or SFA it to drop lower then 4.10's in a KJ.
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