Engine support during motor mount swap - JeepForum.com
LinkBack Thread Tools
post #1 of 4 Old 02-01-2006, 07:07 PM Thread Starter
Registered User
DustPuppy's Avatar
1999 XJ Cherokee 
Join Date: May 2004
Location: Planet Neptune, on patrol near Columbus, Ohio
Posts: 33
Engine support during motor mount swap

Hello folks,

I am asking for advice on the best (safest) way to support the weight of the 4.0L HO engine in my '99 XJ in order to replace the motor mount.

According to the FSM, it simply states to "support the engine", which in and of itself is not terribly helpful.

I checked the Hanes manual I have, and it states to use a floor jack and a piece of wood, to spread out the force, and to lift the engine via the oil pan enough to take tension off of the engine to unbolt the mount and replace it.

That sounds like the detail I need, but honestly I do not feel real comfortable supporting part of the engine on the oil pan. Can the oil pan really take that kind of stress without cracking?

My question is, has anyone else supported the engine this way or found another, safer, location to use a floor or bottle jack?

Thanks for any advice you have.


DustPuppy is offline  
Sponsored Links
post #2 of 4 Old 02-01-2006, 08:22 PM
Registered User
1991 XJ Cherokee 
Join Date: Oct 2004
Location: Denver, CO
Posts: 1,184
The oil pan can definently take it, I've got big *** dents in mine from bigger rocks with more force than the weight of the engine. And I've say down plenty of 4.0L's on the oil pan before. I would say the BEST would be to use a cherry picker and hook it onto the head bolts. But if that's not possible, use a jack and a piece of wood. To keep it balanced you could bolt the piece of wood to the frame and put jackstands under it.

"Nitrous? So is that like viagra for your Jeep?" -mom

"I flopped it"
gumcrew2 is offline  
post #3 of 4 Old 02-01-2006, 10:02 PM
Registered User
Join Date: Aug 2005
Posts: 2,047
I have also done it with a jack on other engines with no troubles.
bobjp is offline  
post #4 of 4 Old 02-03-2006, 09:45 AM
Registered User
2005 WK 
Join Date: Jun 2005
Location: Omaha, NE
Posts: 933
Block and jack under the oil pan works great. Just don't try jacking up the entire vehicle. Loosen your motor mount bolts first and jack then loosen then jack and loosen until your motor is high enough to remove the mounts. The fan shroud is going to get in the way also....so I would remove that...

OUT WITH THE OLD R.I.P. 98 TJ Sport 4" Procomp lift/adjustable lower control arms and track bar **** Cepek FCII 33x12.50x15/**** Cepek DC-1 wheels
98JEEPTJ is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com 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 e-mail 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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Motor Swap or OEM Motor Mods??? inkpen00 Engines & Drivetrain 7 02-17-2010 07:15 AM
4.0L engine mount/swap 2000_WJ Engines & Drivetrain 2 04-15-2009 11:33 AM
Motor mount tower/motor frame mount location pepto Engines & Drivetrain 3 03-24-2009 02:07 PM
Need help with motor mount plates, 258 to 4.0 swap whittlecj Fabrication Shop 2 12-31-2008 08:44 AM
Easy engine support when removing tranny skid Jeepin' Rock Cl Cheap Tricks & Fixes 1 09-14-2005 10:10 AM

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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome