Comanche with an oil leak. Do I need a new block? - JeepForum.com
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Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > MJ Comanche Technical Forum > Comanche with an oil leak. Do I need a new block?

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Unread 12-04-2011, 08:04 AM   #1
nickhuts
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1990 MJ Comanche 
 
Join Date: Sep 2008
Location: Monroe, Ohio 45044, Ohio
Posts: 109
Comanche with an oil leak. Do I need a new block?

So I bought this comanche with a lil oil leak about a month ago.
After getting it up on the car lift I determine its a rear main seal.
No big deal. I swap it out and then relise that there is a chunk of the block missing. Its a little triangle that had been chipped off (probably the previous owner attempting to get the seal out with a hammer and screw driver...but missed!) It is a thin piece of block between the rear main seal and the end of the crank...ugh! Do I need a new block? I "glued" the piece back in there with RTV sealent like it was before and now Its leaking about a 7 in oil circle on the floor in about 3-5 minutes (same if not worse then before) .

Maybe take it back apart and use some JB weld. Its easy to get to with out the front drive train in.

any ideas?

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Unread 12-04-2011, 11:17 AM   #2
automan2164
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1986 MJ Comanche 
 
Join Date: Dec 2009
Location: Harvard, IL
Posts: 200
Any pics of it?

Rob
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Unread 12-04-2011, 11:49 AM   #3
nickhuts
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1990 MJ Comanche 
 
Join Date: Sep 2008
Location: Monroe, Ohio 45044, Ohio
Posts: 109
Ok this is not mine but I found this on google. it should give ya an idea.
jeepin-rear-seal.jpg  
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Unread 12-04-2011, 01:55 PM   #4
nickhuts
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1990 MJ Comanche 
 
Join Date: Sep 2008
Location: Monroe, Ohio 45044, Ohio
Posts: 109
just got some marine JB weld and stuck it back in there. I will put the oil pan back on tomorrow night and fire it up tuesday....fingers crossed....
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Unread 12-07-2011, 01:58 PM   #5
nickhuts
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1990 MJ Comanche 
 
Join Date: Sep 2008
Location: Monroe, Ohio 45044, Ohio
Posts: 109
Let the motor warm up a lil bit...no leak

Held the rpms at 2000...seems to be golden

JB weld saved my block. Time will tell
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Unread 11-26-2012, 05:25 PM   #6
nickhuts
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1990 MJ Comanche 
 
Join Date: Sep 2008
Location: Monroe, Ohio 45044, Ohio
Posts: 109
ok update...the JB weld is STILL holding..about one year later...freaking awesome stuff!!
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Unread 11-26-2012, 10:16 PM   #7
ftpiercecracker
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1990 MJ Comanche 
 
Join Date: Jul 2011
Location: woodbury, Tennessee
Posts: 348
good fur you!
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