cost to replace blown head gasket? - JeepForum.com

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post #1 of 17 Old 05-22-2007, 08:42 PM Thread Starter
th3godf4th3r
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cost to replace blown head gasket?

what would be a guesstimate of the price???

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post #2 of 17 Old 05-22-2007, 08:48 PM
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I think I paid about $36 shipped for a Mopar Performance Head Gasket...And some time to remove the head and other manifolds.....so really not much
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post #3 of 17 Old 05-22-2007, 08:51 PM Thread Starter
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how difficult was that to remove and replace?? On a scale of 1 to 10??
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post #4 of 17 Old 05-22-2007, 08:55 PM
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Well im in the process of building a stroker so I had the whole engine pulled out...but I assume one could remove the head with the engine still in the bay...Id say remove the valve cover and remove (mostly likely break) the collector bolts on the header...then carefully remove the head bolts and use some man power (two people) and slowly remove the head....clean up head surface and block and put back on to specs...and bolt everything back up...thats how id do it atleast...maybe a 5 i guess
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post #5 of 17 Old 05-23-2007, 05:16 AM
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You need to remove the manifolds before you remove the head, don't try and remove it as one assembly. On a scale of 1-10, maybe a 6. As long as you can get the fasteners out, it's just going to be a slow process, but not an extremely difficult one. Get yourself a new head gasket, manifold and valve cover gaskets and a twelve pack.
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post #6 of 17 Old 05-23-2007, 07:28 AM
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Quote:
Originally Posted by th3godf4th3r
how difficult was that to remove and replace?? On a scale of 1 to 10??
It's not complicated, it's just alot of work. For your first time, I'd be conservative and give yourself about 8-10 hours. After that you should be able to do it in under 4 hours.
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post #7 of 17 Old 05-23-2007, 09:07 AM
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Is this for a 4.0 in your grand? (avatar) or another rig/motor?

If it's the 4.0..........depending on mileage there's a few other things you should do to "freshen" up the motor while you have the head off.


* Lap the valves ($10.00 for the lapping compound and tool)
* De-Carbon head and valves (free)
* Replace Lifters ($60)

I found it was cheaper to purchase a "top end seal kit" instead of just the head gasket. A head Gasket alone will run you $30 at a local auto parts store. For less than $50 you can get a kit that has literally every gasket above the block. (head gasket, thermostat, valve cover, manifolds)


It's not rocket science...if you can read a manual. Just don't be in a hurry..and have fun with it.

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post #8 of 17 Old 05-23-2007, 09:23 AM
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Quote:
Originally Posted by crosschecker
You need to remove the manifolds before you remove the head
On an '88 4.0 the manifolds Can be retracted toward the driver's side. Pulling the manifolds along with the head is def not an option, IIRC the head weighs close to 80# by itself.
Head gasket on a 4.0 is a weekend job or more for a newbie and an afternoon job for someone who has done it before. Its a 6 or 7 on a scale of 1-10
I would guess paying a shop to do it youd be in the $600-800 range.
Lifters should always be replaced with cam instead of by themselves.
You should have the head tanked, magnafluxed, and pressure tested.
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post #9 of 17 Old 05-23-2007, 09:28 AM
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Is this for the 5.9 Grand Cherokee or what? It makes a bit of a difference.
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post #10 of 17 Old 05-23-2007, 09:41 AM
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Quote:
Originally Posted by cmotsvt
with cam instead of by themselves.
You should have the head tanked, magnafluxed, and pressure tested.

Overkill.




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post #11 of 17 Old 05-23-2007, 01:51 PM
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If youre going to do it might as well do it right.
Changing the gasket if you have a cracked or warped head is a waste of time.
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post #12 of 17 Old 05-27-2007, 12:28 AM
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Quote:
Originally Posted by th3godf4th3r
what would be a guesstimate of the price???
What's your symptoms for determine that the gasket is blown??

I see some little oil traces between my 2001 XJ head and block.
As far as I have seen its on the passenger's side lets say like in the middle of the engine!

Is this a common failure on the 4.0?

How dangerous is to keep on driving like that?

Thanks

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post #13 of 17 Old 05-27-2007, 12:41 AM
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DO IT YOURSELF! its a good way to get a look on things too. good opp. to learn and good opp. to see how some other parts in your enginge look like. i did one in a cavalier and i would rate it at a 7 just because some bolts were hard to get to.

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post #14 of 17 Old 05-27-2007, 05:01 AM
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Quote:
Originally Posted by XJH-007
Is this for a 4.0 in your grand? (avatar) or another rig/motor?

If it's the 4.0..........depending on mileage there's a few other things you should do to "freshen" up the motor while you have the head off.


* Lap the valves ($10.00 for the lapping compound and tool)
* De-Carbon head and valves (free)
* Replace Lifters ($60)

I found it was cheaper to purchase a "top end seal kit" instead of just the head gasket. A head Gasket alone will run you $30 at a local auto parts store. For less than $50 you can get a kit that has literally every gasket above the block. (head gasket, thermostat, valve cover, manifolds)


It's not rocket science...if you can read a manual. Just don't be in a hurry..and have fun with it.
XJH-007-

I am brand new to working on cars....So I have some very basic questions:

What is: "Lap the valves" and how do you do it? How do you replace the lifters?

Are there any sites that describe the process?

Where did you get your gasket kit? Mopar or somewhere else?

Thanks
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post #15 of 17 Old 05-27-2007, 05:01 AM
Reader
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Quote:
Originally Posted by XJH-007
Is this for a 4.0 in your grand? (avatar) or another rig/motor?

If it's the 4.0..........depending on mileage there's a few other things you should do to "freshen" up the motor while you have the head off.


* Lap the valves ($10.00 for the lapping compound and tool)
* De-Carbon head and valves (free)
* Replace Lifters ($60)

I found it was cheaper to purchase a "top end seal kit" instead of just the head gasket. A head Gasket alone will run you $30 at a local auto parts store. For less than $50 you can get a kit that has literally every gasket above the block. (head gasket, thermostat, valve cover, manifolds)


It's not rocket science...if you can read a manual. Just don't be in a hurry..and have fun with it.
XJH-007-

I am brand new to working on cars....So I have some very basic questions:

What is: "Lap the valves" and how do you do it? How do you replace the lifters?

Are there any sites that describe the process?

Where did you get your gasket kit? Mopar or somewhere else?

Thanks
Reader is offline  
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