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Unread 06-15-2009, 07:28 PM   #1
MikeMcCasland
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4.0L cylinder head replacement...Walkthrough?

Hey Guys,

I'm a Ford guy myself but I'm going to be helping a friend replace the head gasket on his 2000 XJ 4.0L. It has a cracked cylinder head or blow head gasket, but with this specific casting I'm guessing cracked head. It does all the typical things, fouls plugs on the same cylinder constantly, looses coolant, smoke on startup etc.

I'm looking for a detailed walk through with pictures. This stuff is hard to find on some forums but this is the jeep forums, and jeep guys are always tearing apart their trucks for some modification or another. I figured given the number of threads out there regarding this issue there HAD to be someone who wrote up a walk through.

Anyone go something like this?

EDIT: Changed the year. It's a 2000 model.


Last edited by MikeMcCasland; 06-15-2009 at 08:07 PM.. Reason: 2000 Model
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Unread 06-15-2009, 07:59 PM   #2
xjfever
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The 99 model should have the better casting, the 00-01 had the 0331 casting which is more prone to cracking.
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Unread 06-15-2009, 08:07 PM   #3
MikeMcCasland
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Yup, my mistake it's actually a 2000 model.
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Unread 06-15-2009, 08:12 PM   #4
xjfever
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Don't know if you have found a replacement head or not but I would look into alabama cylinder head. They make a better replacement. I don't have a walk thru but it's basically remove and replace with the proper torque sequence, and adding sealant to the front head bolt that is behind the thermostat housing. I would recommend to your friend getting a factory service manual. It will have all the info you and he needs to do this and many other tasks.
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  1. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
  2. Sold'99 WJ limited, 4.7L, 3" IRO lift. Bilstein shocks, JK rubicon wheels, 255/70/17's, carolina driveshaft, IRO adjustable control arms, IRO adjustable A-arm
  3. Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
4. 04 Dodge ram 1500 quadcab, yes, it has a hemi.
5. '08 BMW X3, Mods in progress.
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Unread 06-15-2009, 08:20 PM   #5
MikeMcCasland
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I have advised him to get a manual like that, at the very least a Haynes manual. Nope have not found a new head yet. He just got the XJ this weekend so hasn't had the time to look yet. Again, I figured you Jeep guys had a write up for everything.
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Unread 06-16-2009, 12:42 PM   #6
100dollarbill
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I am in the process of replacing my 1993's cylinder head also. Everyone is saying you need sealant on bolt #11. Exactly what kind of sealant (I'm guessing high temp RTV) and where on the bolt do you put it? I know that bolt goes into the water jacket but do you slobber the whole thing with sealant? Wow this is starting to sound like a stupid question.
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