Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum > Crackshaft "uh-oh" question on the I6

Join Wrangler Forum Today

Thread: Crackshaft "uh-oh" question on the I6 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)
08-22-2012 10:34 PM
WiDoWmAkEr I just replaced my rear main twice now and something is wrong with the crank. It will leak 4-5 drips after shutting off the engine leaving a nice puddle of oil on the floor. Too bad it's a two piece rear main otherwise I could have bought a sleeve for it. The shop I took it to said they could keep on replacing it but it won't help. I guess I will start to save for a new small block v8.
05-08-2012 12:21 PM
The Korean Uh ya I won't lie that was my first and last time for a "mudding" event... from now on it will be trail use, sand dunes (ya still along the lines of mudding), and daily driven.

Rear main seal area is still leaking and leaking a smidge faster now... back to the shop I go after work.
05-08-2012 09:34 AM
2002TJ If by 'wheeling' you mean reasonable trail use, then go for it.

However, 'mudding' it is a whole different animal. Myself, I ain't gonna get my bellhousing packed with abrasive/corrosive mud and have to constantly replace clutch/pressure plate/throwout/flywheel and wear out my rear main seal.

As far as the rear main seal, it all depends on just how badly grooved your crank is and the quality and fit of the new seal, plus if you have excessive main bearing clearances....I just helped a bud replace a 23 year old hardened rear main seal on his Cherokee...the crank was fine, so it should out last the rest of the engine.
05-08-2012 08:17 AM
The Korean Marco?
05-08-2012 01:25 AM
The Korean
Crackshaft "uh-oh" question on the I6

Jeep: 05 Wrangler Rubicon
Transmission: 6 speed manual
Mileage: 113,616
Lift Kit: None
Tires: 31" BFG M/T's
Times Off-roaded: Once (mud-bog 2 weeks ago)

Hey all! Just got my Jeep back from the repair shop and they did the following:

-New Rear Main Seal
-New Clutch
-New Pressure Plate
-New Throwout Bearing
-Resurfaced flywheel
-New Rear Brakes
-New Fan Clutch
-New Thermostat
-Coolant flush

I can't remember exactly what the shop guy said, but I'm pretty sure it was something along the lines of my crackshaft now has grooves in it from the rear main seal going out at the mud bog (mechanic was a prior mud bogger)... While they did say there's no leak and the oil pressure is holding at the present moment, they kinda have me a smidge worried about wheeling it again... so my question to you all is... how worried should I be with a slightly worn/grooved crackshaft when wheeling and daily driving it? Kinda just knock on wood and hope for the best?

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 02:53 PM.

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