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Unread 03-25-2013, 08:40 AM   #1
bcash616
Registered User
1999 TJ Wrangler 
 
Join Date: Jun 2011
Location: simpsonville, sc
Posts: 423
Dana 35 and a 2.5L with a regear...

I have a 99 TJ 4cyl jeep with the awful Dana 35 and the normal 4.10 gearing. I am running 33" tires for mostly street purposes....VERY mild of road. This is a Daddy-Daughters fun jeep for the occasional weekend ride to get ice cream and go fishing....hence the very mild off road. DONT FLAME ME...My girls are #1 not the toy jeep, so I don't and can't spend big money on axle swaps.

I would like a bit more low in power out of this 4 cyl and some pulling power going up hills around town so I have been think of regearing the axles to 4.88 to try and get back that power thus lost from the 33's.

Question: is it worth it with the Dana 35 and a 4cyl or is the axle still a ticking time bomb even with my weak motor and street jeep application?

Will going to 4.88 gears be a hindrance on the longevity as well in this situation?

I plan to do the install myself as I am very confident in gears and such as per my career. That is the only way I can afford this mod in the first place.

Please help educate me on the Dana 35 and 4cyl application.

BTW.. I searched and searched, but only came up with 6cyl and Dana issues....

Thanks in advance!

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Unread 03-25-2013, 10:14 AM   #2
seattle_yj
Registered User
1993 YJ Wrangler 
 
Join Date: Jun 2012
Location: Issaquah, WA
Posts: 948
Quote:
Originally Posted by bcash616
I have a 99 TJ 4cyl jeep with the awful Dana 35 and the normal 4.10 gearing. I am running 33" tires for mostly street purposes....VERY mild of road. This is a Daddy-Daughters fun jeep for the occasional weekend ride to get ice cream and go fishing....hence the very mild off road. DONT FLAME ME...My girls are #1 not the toy jeep, so I don't and can't spend big money on axle swaps.

I would like a bit more low in power out of this 4 cyl and some pulling power going up hills around town so I have been think of regearing the axles to 4.88 to try and get back that power thus lost from the 33's.

Question: is it worth it with the Dana 35 and a 4cyl or is the axle still a ticking time bomb even with my weak motor and street jeep application?

Will going to 4.88 gears be a hindrance on the longevity as well in this situation?

I plan to do the install myself as I am very confident in gears and such as per my career. That is the only way I can afford this mod in the first place.

Please help educate me on the Dana 35 and 4cyl application.

BTW.. I searched and searched, but only came up with 6cyl and Dana issues....

Thanks in advance!
If its just a weekend drive out town and to the lake rig, d35's are going to be fine.
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Unread 03-26-2013, 07:21 AM   #3
NICKTAMM19
Registered User
2002 TJ Wrangler 
 
Join Date: May 2011
Location: jasper, alabama
Posts: 195
I have a 2002 TJ with the 2.5l as well I just regeared to 4.88s last month and I can tell you that it's like driving a new vehicle 5th gear is usable again and fuel economy has went up as well
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