4.0 head gasket replacement - JeepForum.com
 
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post #1 of 13 Old 10-25-2006, 12:59 PM Thread Starter
ras2001wj
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4.0 head gasket replacement

Well, the time has come. Im leaving to take the WJ to my friends garage to replace my blown head gasket. This is my first time working on a 4.0, and by far the most complicated job i have done yet (sure as hell beats the 3 water pump replacements i did on my old 318 dakota) I have an expierienced engine rebuilder assisting me and loaning me tools, so i should be ok, but he mainly did SB Chevy's, but he is still confident that this will be a breeze. Any thing unusual to look for in the 4.0? Should i get the valves re-ground while im in there? I only have 65k on it, but i dont really want to tear it apart again, for at least another few years until i can get another dd and build this as my dedicated trail rig. Any advice would be helpful.


Rick

2001 WJ Laredo 4.0
2" BB
245/75R16


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post #2 of 13 Old 10-25-2006, 01:26 PM
rdrbssr11
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the 4.0 was one of the easiest head gasket jobs i ever done, thats for sure. if it only has 65k on it, i'd just take the head into a machine shop, make sure its okay, and reassemble. you shouldn't have too many issues with that amount of mileage.

you can re-use the head bolts the first time around, but after that replace them.

-95' grand cherokee w/ 5.2. ARB & xd9000. IRO 4.5" w/ 33's. 8.8 & HP 30 w/ 4.10's both aussie locked and some other goodies.
-97' grand cherokee w/ 4.0. stock.
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post #3 of 13 Old 10-25-2006, 02:25 PM
Ahardy4
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Yeah this is a pretty easy job. Especially if you have someone to help you. I changed out mine in a couple of lazy weekends by myself. Hardest part was lifting the head out, but with two people it shouldn't be to bad. Goodluck.

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post #4 of 13 Old 10-25-2006, 02:50 PM Thread Starter
ras2001wj
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actually, i allready have new head bolts, i figured on doing it right the first time. THe guy helping me, my friends step-father, has rebuilt many chevy and ford engines, but never a chrysler or amc. But i also have an ase master mechanic helping re assembl for the cost of pizza and beer

Rick

2001 WJ Laredo 4.0
2" BB
245/75R16


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post #5 of 13 Old 11-01-2006, 08:42 AM Thread Starter
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well, after a series of delays.......

i might actually get arround to it this weekend. The guy assisting me has been stalling, so, i have pushed it off, which has pissed me off (I hate my moms lumina with a passion) But all should be well by this weekend. Any other advice you can offer will still be helpful, as will any warnings or even jokes to lighten up the situation. I will also be replacing the damn fan relay which caused this whole damned situation in the first place. Any tools i can look for when i go in to get my haynes manual? I have a good torque wrench, just dont want to buy the book and have to make a trip back once i find out i need special tools.

Rick

2001 WJ Laredo 4.0
2" BB
245/75R16


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post #6 of 13 Old 11-01-2006, 03:46 PM
-Joe-
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You 110% sure its the head gasket?

Do you have the head bolt tightening sequence and torque specs?

New valve cover gasket? New intake/exhaust gasket?

- Joe -

'95 Jeep Grand Cherokee Laredo I6 4.0L
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post #7 of 13 Old 11-01-2006, 04:17 PM
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a 2001 grand cherokee with only 65k on it?...shouldnt that still be under warrenty its only 5 years old

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post #8 of 13 Old 11-02-2006, 05:29 AM Thread Starter
ras2001wj
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nah, they discontinued the 7/70 before mine came out. Im getting the haynes, that will cover the bolt tightning and torque specs, and 125% sure, i worked at mcdonalds for 3.5 years and still havent seen that thick of sludge as i have in the coolant bottle

Rick

2001 WJ Laredo 4.0
2" BB
245/75R16


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2012
"Freedoms Popular"

Last edited by ras2001wj; 11-02-2006 at 06:29 AM.
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post #9 of 13 Old 11-09-2006, 06:00 AM Thread Starter
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Im screwed

well, the guy who promissed the use of his garage and tools has decided to blow off my calls, so i got pi**ed and took it to my mechanic (Lucky for me he is out of work, so he only wants between $200-300, to cover some bills, but i got a "happy holidays, skip a payment" voucher to push off a months payment until the end of tha loan, so that covers $245 of it for now, i alread have the gasket set and head bolts, so i guess im sot so bad on it.

Rick

2001 WJ Laredo 4.0
2" BB
245/75R16


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post #10 of 13 Old 09-29-2009, 09:29 AM
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Quote:
Originally Posted by ras2001wj View Post
well, the guy who promissed the use of his garage and tools has decided to blow off my calls, so i got pi**ed and took it to my mechanic (Lucky for me he is out of work, so he only wants between $200-300, to cover some bills, but i got a "happy holidays, skip a payment" voucher to push off a months payment until the end of tha loan, so that covers $245 of it for now, i alread have the gasket set and head bolts, so i guess im sot so bad on it.
man its a really simple job..maybe 40-50 bolts and nuts to remove the head and pull the gasket.. I would save your money and do it yourself!!! took me a lazy 24 hours to do mine in a 93 cherokee.The only thing i worry about is snapping bolts. make sure your have a proper torque wrench and take your time so you dont miss anything..also if you remove ANYTHING!!!!!! mark it!!! the spark plug wires, rockers,rods,ect..ect. MY retarded cousin could prob do this If i gave him a haynes manual and a socket set..
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post #11 of 13 Old 09-29-2009, 09:36 AM
CobraSpdRH
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I'm thinking he has already done this, or at least hoping. If he procrastinated for 3 years, well that is pretty bad lol
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post #12 of 13 Old 09-29-2009, 09:40 AM
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I replaced the head gasket on my ZJ a few weeks ago, its not that big of a deal. And if you want to save $20 call auto zone, they will give you the torque sequence and specs for the head bolts for free so you dont have to buy the haynes. Unless you re really uncomfortable doing it yourself I wouldn't take it to a mechanic to do it. I used the money I saved by doing it myself to help get the IRO 3.5 kit

1998 XJ- 4.0/AX-15/231- 3.5" RE. 4.10 gears - 4.6 build in progress.
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post #13 of 13 Old 09-29-2009, 09:41 AM
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hahahahahahahahahahahahah wow, how did this ppost come up again? I just now looked at the dates on it

1998 XJ- 4.0/AX-15/231- 3.5" RE. 4.10 gears - 4.6 build in progress.
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