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Unread 08-18-2013, 09:44 AM   #16
briandor
Registered User
2004 WJ 
 
Join Date: Feb 2013
Location: Sinking Spring, Pa
Posts: 194
Quote:
Originally Posted by braddf View Post
Would the cracked head defect for an 01 cause antifreeze to leak out?
Depends on what you mean by leak out? If you mean disappear then yes. The crack usually happens in a location that allows antifreeze to mix with the oil and that is fairly easy to spot by the milk shake look of the oil mixed with antifreeze. Sometimes though it cracks into the exhaust channel and the antifreeze vaporizes into the exhaust. In this case you would notice antifreeze disappearing and an antifreeze smell to the exhaust.

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Unread 08-18-2013, 09:59 AM   #17
Pedro7
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2000 WJ 
 
Join Date: Jun 2008
Location: Morristown, NJ
Posts: 487
I love the "v8s have to be maintained religiously for you to buy one" answer. Any engine has to be maintained religiously, even a 4.0. The mentality that you can treat it like **** just because its a 4.0 is stupid IMO. The 4.7 is a great engine and is much more suited for the wj. Yes the 4.0 is a great engine and lasts foarever, but is underpowered for The wj. You want fun, reliability and power when you need it, get the v8. You want underpowered and reliable get the 4.0. Parts aren't any more expensive for the 4.7 and you get the same gas mileage. I personally would never get a 4.0 in a wj when the 4.7 is an option, couldnt you tell? Drive one with a v8 and you won't even consider the 4.0.
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2000 WJ - Clayton, IRO, MileMarker, Custom Splice, JCR, Bilstein, Rola, Federal Tires
1997 TJ - Restoration completed thanks to: Cooper Tires, Rustys, Rough Country, and Quadratec.
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Unread 08-18-2013, 12:31 PM   #18
nitroboy88
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2003 WJ 
 
Join Date: Dec 2012
Posts: 17
Like leak out of the motor or leak into the oil?
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Unread 08-18-2013, 06:48 PM   #19
nitroboy88
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2003 WJ 
 
Join Date: Dec 2012
Posts: 17
Quote:
Originally Posted by Pedro7 View Post
I love the "v8s have to be maintained religiously for you to buy one" answer. Any engine has to be maintained religiously, even a 4.0. The mentality that you can treat it like **** just because its a 4.0 is stupid IMO. The 4.7 is a great engine and is much more suited for the wj. Yes the 4.0 is a great engine and lasts foarever, but is underpowered for The wj. You want fun, reliability and power when you need it, get the v8. You want underpowered and reliable get the 4.0. Parts aren't any more expensive for the 4.7 and you get the same gas mileage. I personally would never get a 4.0 in a wj when the 4.7 is an option, couldnt you tell? Drive one with a v8 and you won't even consider the 4.0.
Yeah I get that and thanks for your response. That was my next question too with the fuel mileage and power after you lift it is how its gonna do with the v8 vs the I6 I know its usually a duh but some swear by the I6 and thats what I was trying to understand thanks you have helped
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Unread 08-18-2013, 07:18 PM   #20
new2site
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2002 WJ 
 
Join Date: Jan 2012
Location: Orange county, CA
Posts: 734
As long as you don't severely overheat the 0331 head in the 4.0 I doubt you'll have any problems with one...there's a bunch of 99-02's with near 300K with same head.
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