2.7 Rod bearing replacment - engine not removed ? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 6 (permalink) Old 10-13-2006, 08:11 PM Thread Starter
Intrepid Modder
va3ux's Avatar
Join Date: May 2006
Location: Southern Ontario, Canada
Posts: 979
Feedback: 0 / 0%
2.7 Rod bearing replacment - engine not removed ?

Anyone ever replace rod bearings in a 2.7 without removing the engine ? Any pitfalls in doing so ? I'm thinking about this as a possible preventative maintenance item.

For those that have replaced rod and/or crank bearings, what's the latest word on the best choice of bearings (manufacturer/type) ? I've read that the factory tri-metal bearings may not have been the best choice. Not usre it that's absolutely true, but that's what I've read.

Thanks in advance.
va3ux is offline  
Sponsored Links
post #2 of 6 (permalink) Old 10-13-2006, 10:46 PM
Intrepid Newbie
Join Date: Apr 2006
Posts: 10
Feedback: 0 / 0%
I'm also doing this. any info would be apreciated.
thepcsource is offline  
post #3 of 6 (permalink) Old 10-14-2006, 01:07 AM
I hit shit with sticks!

Daytrepper's Avatar
Join Date: Jan 2005
Location: Zebulon, NC
Posts: 35,006
Feedback: 20 / 100%
Not recommended-- especially as a pm item. You are asking for trouble. Chances are, if you need bearings, or have high miles, the crankshaft has to be polished or machined to make it last, or get it back to spec, not to mention correcting the original problem that caused any bearing failure, oil pump, sludge, etc. You can just install new bearings, engine in car, and run some emery cloth or sandpaper over the journals to clean them up, but mostly your wasting your time and just prolonging the inevitable, but not by much.

Best bet is to pull the engine, tear down, and inspect everything and assess total damage completely, and repair as needed. Other than that, time and $$$ wasted, bigtime.

In my opinion, if you are looking to change bearings as a maintenance item, my advice would be to leave well enough alone-- especially a major repair such as bearings. When it breaks, then worry about it. With 250(kms) chances are much of the other engine parts are significantly worn, and may need complete overhaul.

1998 Dodge Intrepid
Ram Logistics Director; Danbo Truck & Diesel, Inc.
Chairman; Let Your 2.7 Live Foundation
President, Danbo Drumming Ventures, GmbH; Danbo-On-Drums

Last edited by Daytrepper; 10-14-2006 at 01:11 AM.
Daytrepper is offline  
post #4 of 6 (permalink) Old 10-14-2006, 10:00 AM Thread Starter
Intrepid Modder
va3ux's Avatar
Join Date: May 2006
Location: Southern Ontario, Canada
Posts: 979
Feedback: 0 / 0%
Thanks 32Intrepid.

At present (260,000 km/161,000 miles), there are actually no apparent problems at all. The thing still runs like brand new and only uses about 1/3 quart of oil per 3000 miles.
Hence the idea to replace these hard working bearings before a problem develops.

One thing I had planned on doing when I do the timing chains and water pump, was also dropping the pan for inspection/cleaning. Of course my next thought was if I'd gone that far that I could also inspect the rod bearings by pulling the caps. And again if I'd gone that far and hadn't found any damaged bearings (and therefore no damaged crank journals), well I might as well replace the rod bearings. No ?

Still not a good idea ?

Thanks again.
va3ux is offline  
post #5 of 6 (permalink) Old 10-14-2006, 11:21 AM
Intrepid Modder
Join Date: Apr 2005
Posts: 982
Feedback: 1 / 100%
It can be done but but it really makes it difficult to measure bearing clearances and get them torqued down right.. By the time you are finished you will be thinking that it would have been easier to have pulled the engine..

You also run the risk of not getting one of them seated perfectly and you will be putting new bearings on an old crank with an old oil pump to lube everything.. just asking for problems...
In theory these bearings should last forever, since they are really just a spacer to float the moving parts in oil.. The bearing clearance and correct oil pressure and clean oil are the important things as it allows this oil film to always be between the moving parts...This is why regular oil changes and the correct weight of oil are important.. Just taking it apart and retorquing can change this critical bearing clearance...There is really no reason to suspect that the bearings are worn just based on the mileage on the engine...If they are making no noise ,oil pressure is good and you have no other signs of a worn bearing you would be better off leaving them alone..

you also can get a pretty good look at the inside of the oil pan when the front cover is removed for timing replacement so it may not be necessary to remove the pan..Just flush it out from the front without removing it..
Just my 2.7cents worth..

Last edited by lextrep; 10-14-2006 at 11:35 AM.
lextrep is offline  
post #6 of 6 (permalink) Old 10-14-2006, 11:41 AM Thread Starter
Intrepid Modder
va3ux's Avatar
Join Date: May 2006
Location: Southern Ontario, Canada
Posts: 979
Feedback: 0 / 0%
Well, now there's two knowledgeable guys discouraging the idea. And with good reasons in both cases. I'm sold !! I won't do it.

To be honest I was imagining doing the Plastigage thing 6 or more times over, while lying underneath the whole affair, and I wasn't liking the thought of it. I know it isn't a very practical way of doing this critical operation.

Thanks gents. I'll leave well enough alone. And I'll check oil pressure again before I buy the timing/waterpump parts to see of the oil pump has deteriorated since I checked the pressure last December.
va3ux is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

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:


Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:

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 On
Pingbacks are On
Refbacks are On

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