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Head gasket replacement info?

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Old 11-09-2016, 10:07 AM
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Originally Posted by nujeepguy
still trying to figure if they would want a bad 331 that was from the bad casting time?? like what would they do with it?
Dude. What else would you send them if you didn't send the head that was on your jeep? Sending in a core is typical for most auto parts. You go to autozone for a new alternator? They want he old broken one. It's not like your going to buy from clearwater, and then buy another differrent head to send them as a core. You send whatever you take off. Nothing to figure out haha
Old 11-10-2016, 10:18 AM
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Originally Posted by mikesignal
the best deal for a new head is from Clearwater. They charge $450 shipped to your door for a new head, no core charge. You do have to send the old head back within 30 days (or 60 ). they also send you a prepaid shipping label for the old head.
Got the head machined for $275, much less then a new one.

Originally Posted by Martlor13
Ok. It's only a matter of time now though, that the 0331 goes. You can't fix it. No offense man, but you should have fixed it the proper way with a new head. How much are they charging you? A new head from clearwater is about $450. I have a strong feeling your going to end up paying twice. Hopefully I'm wrong.
I've always head it's hit or miss if it cracks? If mine over heated and it was gonna crack how did it not?

Originally Posted by NewbJeep

Don't do it, mang. Much less expensive to scrap the machined 0331 than to replace the engine. 0331 head cracking is a matter of when, not if. Nothing a machine shop can do to prevent it. The casting was poop from the factory. Trust the experience here.

Though I take it your absence and silence means you've already made your decision...
How is a cracked head gonna kill a motor if that were to happen? If it cracks all I'd need is a new head. The block would be fine.
Old 11-10-2016, 10:50 AM
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Originally Posted by No4x4Yet
How is a cracked head gonna kill a motor if that were to happen? If it cracks all I'd need is a new head. The block would be fine.
If you let it go for very long, coolant seeping into the oil will wipe out your bearings.
Old 11-10-2016, 11:10 AM
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Originally Posted by No4x4Yet
Got the head machined for $275, much less then a new one.



I've always head it's hit or miss if it cracks? If mine over heated and it was gonna crack how did it not?



How is a cracked head gonna kill a motor if that were to happen? If it cracks all I'd need is a new head. The block would be fine.
Alright dude we all warned you. $175 extra is not much to make it have been fixed PROPERLY. Plus overheating it now only weakened it more. And if it cracks, coolant in oil will screw up the bearings in the motor and kill it. But oh well you made your choice
Old 11-10-2016, 07:07 PM
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Originally Posted by No4x4Yet
Got the head machined for $275, much less then a new one.



I've always head it's hit or miss if it cracks? If mine over heated and it was gonna crack how did it not?.
my cousins 2001 blew the head gasket at 165k. he also got the head machined and replaced the gasket. So far so good for him. Personally I would have replaced it, just because I would not want to do the work over again. I am pretty sure when they machine the head they pressure test it for cracks first.
Old 11-10-2016, 07:33 PM
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It would be a mistake to think of a catastrophic gasket failure as a "safety valve". Best way to pressure test the head is while it is still mounted to the block.
Old 11-10-2016, 07:42 PM
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Originally Posted by Turbo X_J
It would be a mistake to think of a catastrophic gasket failure as a "safety valve". Best way to pressure test the head is while it is still mounted to the block.
x2
Old 11-10-2016, 09:06 PM
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Originally Posted by Turbo X_J
It would be a mistake to think of a catastrophic gasket failure as a "safety valve". Best way to pressure test the head is while it is still mounted to the block.
yes, but if you can clearly see the gasket has failed, and you remove the head to send it off to get machined, the shop should test the head for cracks. There is no point in machining a head without testing it first. would hope the shop the OP used did this before machining it.

https://www.goodson.com/blog/2012/01...ack-detection/
Old 11-10-2016, 09:28 PM
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^
I don't own a crystal ball so I can't accurately answer the woulda, coulda, shouda variety questions.
Old 11-10-2016, 09:40 PM
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Originally Posted by Martlor13
Alright dude we all warned you. $175 extra is not much to make it have been fixed PROPERLY. Plus overheating it now only weakened it more. And if it cracks, coolant in oil will screw up the bearings in the motor and kill it. But oh well you made your choice
Head isn't already at the shop, so it would be the priced of a machined head plus a new head.

The shop mangafluxed and flow tested the head. So I'm not worried. He's worked on jeep heads before so he knows what to look for.

Besides have you guys seen the Trucks episode on Spike? Cherokees don't need rod bearings to run.

I did get the Felpro head gasket kit and head bolts on sale for $60 on rockauto so if i have to redo it I'm ahead!!
Old 11-11-2016, 12:25 AM
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Originally Posted by No4x4Yet
Head isn't already at the shop, so it would be the priced of a machined head plus a new head.

The shop mangafluxed and flow tested the head. So I'm not worried. He's worked on jeep heads before so he knows what to look for.

Besides have you guys seen the Trucks episode on Spike? Cherokees don't need rod bearings to run.

I did get the Felpro head gasket kit and head bolts on sale for $60 on rockauto so if i have to redo it I'm ahead!!
You've got it wrong. But goodluck.
Old 11-11-2016, 12:12 PM
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Originally Posted by nujeepguy
still trying to figure if they would want a bad 331 that was from the bad casting time?? like what would they do with it?

once more.

would they accept a 331 cracked head as a core?
it dont seem like its worth anything but scrap?
finally!

called clearwater about the 331 core. they take them but consider them scrap. maybe melt them down. he also had some advice on what may be my pistonslap. nice guys there.
Old 11-11-2016, 12:25 PM
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Originally Posted by nujeepguy
finally!

called clearwater about the 331 core. they take them but consider them scrap. maybe melt them down. he also had some advice on what may be my pistonslap. nice guys there.
Are you ignoring me or something? I aslnswered your question twice? We had some issues in one thread but man we cool. Don't ignore me hahha
Old 11-11-2016, 05:40 PM
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Originally Posted by Turbo X_J
^
I don't own a crystal ball so I can't accurately answer the woulda, coulda, shouda variety questions.

LOL

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