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post #1 of 5 Old 11-22-2012, 09:09 AM Thread Starter
jlsalani
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2004 TJ Wrangler 
 
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rust gone, engine next

just finished fixing the rust problem on my son's 2000 Cherokee..... moving on to the engine next. What would you guys suggest?? I am going to clean it up and look for leaks. I might have a rear main leak or it is running down the back of the block. Not very much, doesn't even make it to the ground except for a drop or two. I am a bit concerned about the head. Read way too many postings about the 2000 head cracking issue. I haven't noticed too much coolant loss but there seems to be a little. Should I just replace it and be done with it?? If so, where should I go to buy one that won't have the same issue. If I replace, what should I do while I have it opened up?? Jeep runs good, but needs a clean up.

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post #2 of 5 Old 11-22-2012, 09:30 AM
CJ7-Tim
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Threads about cracked 0331 heads far exceed actual cracked 0311 heads. If it ain't broke, ....... Cooling system preventative maintenance would be a better idea that swapping heads. RMS leaks are common.

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post #3 of 5 Old 11-22-2012, 09:33 AM
austin6137
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1990 XJ Cherokee 
 
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4.6 stroker

90 - xj laredo- 4.5" rough country lift, 6.5" of total lift with drop brackets, zj disc brakes on c8.25, olympic winch bumper, jcr upper and lower quarter armor, IRO hack-n-tap and rock sliders and rear bumper. rugged ridge 8500lb winch. Spartan locker up front. With a jd yellow paint job, 97+ front end and bushwacker cut out flares. 35's
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post #4 of 5 Old 11-22-2012, 07:38 PM
DezertXj88
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1990 XJ Cherokee 
 
Join Date: Jan 2012
Location: somewhere in the dust
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4.2L mini stroker with a ported head & mid to high 9's for compression. Mines 9.2:1, stock cam at -4* vs factory -8*. Ported head LS1 valve train.. (2.00/1.55 valves turned down to 1.93/1.52) stock is 1.90/1.50
Anyway dynoed at 289/318 on a motor dyno running on 87oct. Not to shabby!
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post #5 of 5 Old 11-22-2012, 08:14 PM
bigbill888
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1996 ZJ 
 
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Quote:
Originally Posted by jlsalani View Post
I am going to clean it up and look for leaks. I might have a rear main leak or it is running down the back of the block. Not very much, doesn't even make it to the ground except for a drop or two. I am a bit concerned about the head.
My 96 4.0 ZJ used to leak oil from every place imaginable. After carefully cleaning up the CCV system, no mo leaks whatsoever.

96 ZJ Laredo, 4.0, 242, 230K
95 ZJ Limited, 4.0, 242, 140K
98 XJ Sport, 4.0, 231, 140K
All work well
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