Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum > Gear a 2.5L 4Cyl?

Join Wrangler Forum Today

Thread: Gear a 2.5L 4Cyl? Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
12-11-2009 08:07 PM
kdukes4 you should already be on 4.10s i'll be doing 4.88s someday. for now, im on 33's and i don't have any complaints, maybe not a ton of power, buttt the gas economy aint all to bad.
12-11-2009 06:35 PM
garett73 i have 4.10s with my 4 banger and 33s it gets up and goes still
12-11-2009 01:16 PM
Originally Posted by terrible2 View Post
I meant kinda
12-11-2009 01:08 PM
Jerry Bransford For 33" tires, 2.5L engine, and the 5-speed manual transmission, go right to 4.88. 4.56 is recommended for the larger 4.0L engine and 33" tires but for your 2.5L, 4.88 is the correct ratio. The D30 is fine with 4.88 gearing, I've been running 4.88 for 8 years with 35" tires and f/r lockers and the only thing I've broken up front on my Dana 30 was an axle shaft. 4.88 is the standard recommendation for 33" tires and the 2.5L... 4.56 is not enough gear for that engine and 33" tires. Trust me on this, the 2.5L engine needs those slightly higher rpms to perform well with that big of a tire.
12-11-2009 12:47 PM
4Jeepn both will push them, but 4.56 will push better. 4.88's would push best, but that dana 30 gear gets really really small at the point..
12-11-2009 12:30 PM
terrible2 yes
12-11-2009 12:28 PM
Gear a 2.5L 4Cyl?

I recently bought a 98 tj 4 cyl. engine swap is a no go. Would a 4.10 or 4.56 be appropriate to push 33" tires?

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

All times are GMT -5. The time now is 11:41 AM.

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