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  #1  
Old 09-26-2009, 09:33 AM
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The dreaded crack

So i think that i have the dreaded 4.7 V8 Exhaust manifold crack.

I am going to have my exhaust shop look at it this week to be certain. Its really loud on cold start and goes away as it warms up and its coming from the drivers side behind the tire.



What have you guys replaced it with? If the work has to be done i dont want to waste $ on stock. I want to put a set of stock replacement headers on.

What do you recommend?

this is where i am starting to look for now. but the dont have anything for the 4.7 that i can find.

http://www.airram.com/product.php?ca...&productid=185

http://www.airram.com/parts.php?categoryid=892
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Old 09-26-2009, 09:49 AM
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Re: The dreaded crack

blame it on the hit........

also be careful those are ALL dakota headers. there is NOT much room in the Jeep.
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Old 09-26-2009, 09:51 AM
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Re: The dreaded crack

Yea, i know thats why i was asking because that seems to be all that i can find.

Do you know who/where i can get WK headers?
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Old 09-26-2009, 10:38 AM
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Re: The dreaded crack

there are none
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Old 09-26-2009, 10:51 AM
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Re: The dreaded crack

dakotas will not fit at all....


you sure its not the manifold has not come loose? There is a how to on here to fix it with new bolts....search for Nand12 post
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Old 09-26-2009, 11:27 AM
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Re: The dreaded crack

No, right now i am not sure of anything, I have read that how to as well.


I am going to get it up on a lift and check it out next week, but if it is cracked and it needs to be replaced am i SOL for aftermarket options?
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Old 09-26-2009, 11:44 AM
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Re: The dreaded crack

yep....no aftermarket headers/manifolds for the 4.7 WK
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Old 09-26-2009, 11:46 AM
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Re: The dreaded crack

Giggity fawking gay. Will the dakota headers not clear or something?
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Old 09-26-2009, 12:02 PM
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Re: The dreaded crack

yep....would prob. bolt up if you could get them in there
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Old 09-26-2009, 01:24 PM
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Re: The dreaded crack

you dont want them anyways stay with the stock headers. aftermarkets get to hot for the space you have it will mess up allot of stuff
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Old 09-26-2009, 05:58 PM
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Re: The dreaded crack

Are the stock manifolds cast iron? Maybe you could get them Extrude Honed? More flow = more power
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Old 09-29-2009, 07:05 PM
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Re: The dreaded crack

Have had the same problem for a wile Kyle, it is your very last bolt that broke due to the extreme heat of the manifold, it looks like a pain to get in there so i just left it alone. there is a thread somewhere in here that shows the job with great detail from one of our fellow members.
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