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post #1 of 12 Old 12-17-2012, 05:27 PM Thread Starter
WheelinCowboy
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1989 XJ Cherokee 
 
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Wj Dead Jeep

So about a month or so ago i posted about some motor issues I had. Well it turns out that i need to have the valve seat rebuilt. Mechanic wants $2000 to pull it apart and take it to a machine shop. With a wedding, honeymoon, and having to find a new place to live in the next few months I DO NOT have that kind of money to throw into this thing.

I'm considering taking the motor apart myself and taking it to a machine shop that will do it for $100. I've never done this before and am hoping that I don't have to pull the motor. I've been looking around on the forum but haven;t found it yet. I'm looking to see if anyone has posted a thorough motor teardown with pictures.

any help is always appreciated. Thanks all


1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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post #2 of 12 Old 12-17-2012, 05:59 PM
Ravie
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I6 or V8? I'm guessing V8 since those have valve seat issues...

1999 WJ - Over 10k on the 4.0 rebuild. FB/BDS 2" lift (2.5") w/Bilstein 5125's. General Class Ham...KC0LUA
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post #3 of 12 Old 12-17-2012, 07:21 PM
99SK04GTX
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http://www.amazon.com/Cherokee-1993-...herokee+manual

If you are going to take on a job like that with the skills you have, spend a little on a repair manual.

Last edited by 99SK04GTX; 12-17-2012 at 07:23 PM. Reason: add info
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post #4 of 12 Old 12-18-2012, 12:47 AM
alfaitalia
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Quote:
Originally Posted by 99SK04GTX View Post
http://www.amazon.com/Cherokee-1993-...herokee+manual

If you are going to take on a job like that with the skills you have, spend a little on a repair manual.
Or just download the factory one in PDF form for free off the net!

If you can't fix it with a hammer, you've got yourself an electrical problem!
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post #5 of 12 Old 12-19-2012, 09:00 AM Thread Starter
WheelinCowboy
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Quote:
Originally Posted by Ravie View Post
I6 or V8? I'm guessing V8 since those have valve seat issues...
It is the V8 4.7 HO in the Overland

1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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post #6 of 12 Old 12-19-2012, 09:01 AM Thread Starter
WheelinCowboy
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Quote:
Originally Posted by alfaitalia View Post
Or just download the factory one in PDF form for free off the net!
Thanks. I have the dealer repair manual. do you know if it is absolutely necessary to pull the engine or can i get away with leaving it in the car?

1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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post #7 of 12 Old 12-19-2012, 09:16 AM
Cirruslydakota
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Pull the heads first, then see what shape your pistons and cylinder walls are in. If theyre messed up then its time to pull the short block too.

Sent from inside my 4.0.

Bear - 1999 Jeep Grand Cherokee Laredo
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post #8 of 12 Old 12-19-2012, 09:19 AM Thread Starter
WheelinCowboy
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ok thanks. THe shop i took it to pulled the heads and said the only issue was the valve seat. so i'll get to work on it myself over my xmas vacation hopefully and see for myself

1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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post #9 of 12 Old 12-19-2012, 10:44 AM
Cirruslydakota
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In that case just get the heads reworked and clean the block deck and you'll be good to go. Get a FSM if you don't have one already, its a valuable resource.

Sent from inside my 4.0.

Bear - 1999 Jeep Grand Cherokee Laredo
Apollo - 2008 Mazdaspeed3
Vivienne - 2015 Chrysler 200S
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post #10 of 12 Old 12-19-2012, 11:42 AM
Breadfan
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Wait, you said the shop pulled the heads and determined it was valve seat - they were 90% done if they pulled the head and put it back! If it was just a valve issue, the hardest part is the teardown to get the heads off IMO. I hope they didn't quote $2000 after doing all that, b/c really they did most of the work minus the send to machine shop part.

But yes, you can certainly do this without pulling the motor as indicated above. Searching for Headgasket threads should give you what you need. I've been outlining some of my experiences with that job in this recent thread: http://www.jeepforum.com/forum/f310/...haust-1450874/

You may not be doing a headgasket specifically, but for pulling a head the discussion is probably similar.
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post #11 of 12 Old 11-08-2013, 05:25 PM Thread Starter
WheelinCowboy
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So I had the head remachined and put back together by a friend back in April. 5 days later it blew up. Hole in the valve cover. finally got the money together to have it towed and looked at by a mechanic. the block sucked a valve in and now the whole motor needs to be replaced. Block is shot.

I'm looking into a warranty from the shop that my friend went to to remachine the head but i'm not too hopeful. My mechanic is looking around to find a used motor. He said he is going to try and get it down around $2K. any ideas or leads on a 4.7 HO V8 would be helpful. I plan on selling this thing as soon as it is paid off so as cheap as possible.

1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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post #12 of 12 Old 12-03-2013, 01:07 PM Thread Starter
WheelinCowboy
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Sold it. It's going to go live in Mexico now

1989 Cherokee (XJ) I6 4DR 4X4 Stock... for now
2002 Grand Cherokee Overland- Blown Motor *SOLD*
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