Blown motor -

LinkBack Thread Tools
post #1 of 7 Old 02-01-2006, 12:08 AM Thread Starter
Registered User
2010 JK Wrangler 
Join Date: Jun 2005
Location: Richmond, VA
Posts: 873
Blown motor

if an engine over heats and locks up how difficult is it to repair? not sure if it a 4 cylinder or 6. Also not sure how it over heated. (My buddys 97 TJ) heard he blew it up from his mother.

Might offer him some help fixing it/swapping a new motor. Thanks for the help all.

"It is a damned poor mind indeed that can't think of at least two ways of spelling any word."
Proud owner of 2010 JK, 1994 XJ and an 81 CJ-7
dirtbagofva is offline  
Sponsored Links
post #2 of 7 Old 02-01-2006, 01:44 AM
Matt Gertsch
Matt Gertsch's Avatar
1999 XJ Cherokee 
Join Date: Jan 2005
Location: Nor Cal
Posts: 8,855
Is it an auto or a manual? Start by pulling the spark plugs and flooding the cylinders with penetrating oil.

Derpy Hooves for President in 2012
Matt Gertsch is offline  
post #3 of 7 Old 02-01-2006, 10:00 PM
Registered User
Join Date: Aug 2005
Posts: 1,863
You may be able to get it unlocked by doing what mgertsch says. But if you do get it unlocked, you will probably experience oil burning and/or knocking and/or low compression and the engine won't last much longer. To repair it you would have to remove the engine and completely rebuild it purchasing all new gaskets, bearings, maybe cam/lifter, and piston rings. You will also have to have machine work done. It is hard to say without pulling it apart.
If it turns out that it is locked up, I would just buy a used low mileage engine from a junkyard and swap it in. It will be cheaper more than likely and definitely less time consuming.
bobjp is online now  
post #4 of 7 Old 02-03-2006, 09:47 AM
Registered User
2005 WK 
Join Date: Jun 2005
Location: Omaha, NE
Posts: 933
If it just over heated and quit then the motor isn't blown. If it over heated and went poof and oil and parts went everywhere then its blown...

I would drain the fluids and inspect them for contamination of oil or antifreeze in either or. You could just put a breaker bar on the crank and roll it over. Drop the pan and see if there is any visible damage if you don't feel anything rolling it over or see and damage I would fill it back up and crank it over and see if it starts...Hell you mights just have a bad oil pump. Youcan run it for a little bit before it heats up to casue damage and by then you can usually figure it out...

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

Last edited by 98JEEPTJ; 02-03-2006 at 10:10 AM.
98JEEPTJ is offline  
post #5 of 7 Old 02-03-2006, 11:29 AM
Registered User
Join Date: Aug 2005
Location: Cincinnati, Ohio
Posts: 44
If the engine got hot enuff to seize up there could any number of problems. Cracked or warped head, If it hydro-locked (from liquid in the cylinders) it could have broken rings, bent or broken connecting rods. I'd check that engine very close before i put any money in it. It could be fine and dandy, just fix why it overheated in the first place and drive on. But you never can tell without a good inspection.

79 CJ 5, fiberglass tub on a cut down full size chevy frame. Full width axles GM 14 bolt in the rear. Dana 60 up front both with 5.38 gears. 350/400 turbo, np205 transfer case. Custom built modified 3 link rear coil spring suspension in the back, skyjacker leafs in the front. 44X18.5 gumbo mudders. 104" wheelbase hood and doghouse stretched 13" . ramsey 8000lb winch.
Fullsize_CJ5 is offline  
post #6 of 7 Old 02-04-2006, 09:14 AM Thread Starter
Registered User
2010 JK Wrangler 
Join Date: Jun 2005
Location: Richmond, VA
Posts: 873
thanks for all your input...will try and check the Jeep out this week.

"It is a damned poor mind indeed that can't think of at least two ways of spelling any word."
Proud owner of 2010 JK, 1994 XJ and an 81 CJ-7
dirtbagofva is offline  
post #7 of 7 Old 02-13-2006, 08:01 AM
Registered User
Join Date: Sep 2005
Location: Evansville, Indiana
Posts: 89
I have an 87 258 just pulled from my YJ is great working order for sale.
It was rebuilt aprox 5000 miles ago.
Holds great oil press. and runs fine.
PM for more info if interested.

Jon Evansville, Indiana
87 YJ/TJ Morph

3" (damned old) body lift, 1" Extended shackles, 1.5" Rough Country leaf springs, MP fuel injected 4.0, 3 row radiator, 33x12.5x15 ProComp X-Terrains, Eagle Alloy 8 Holes 15x10, Champion Winch, TJ Dash, 92 Roll Bar, AX15 5 speed, Posi-Lok, 1997 Dash and heater
jwicker is offline  

Quick Reply

Register Now

In order to be able to post messages on the 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
8274- blown motor? help! bisland-yj General Jeep & Off-Road Equipment 3 04-11-2008 04:36 PM
Blown AX5 JSBlu974X4 Engines & Drivetrain 2 01-26-2007 11:32 AM
blown sub?? bananamane Audio, CB & Ham Radios, GPS, & Electrical 5 09-25-2005 10:39 AM
blown sub MSHarnett Audio, CB & Ham Radios, GPS, & Electrical 9 07-27-2004 12:09 AM
Blown motor outlaw351 Engines & Drivetrain 14 02-24-2003 11:09 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