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Old 11-25-2012, 08:51 PM
Sweeney Sweeney is offline
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4.7 blown head gasket

Im considering trading one of my trucks i have for a 00 dakota 4.7 2wd. The guy said it overheated and now blows white smoke.. Would you say head gasket or possibly head related?
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Old 11-25-2012, 09:00 PM
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Old 11-25-2012, 09:12 PM
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87 f150 2wd v8
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Old 11-26-2012, 12:51 AM
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well head gaskets alone will run you about 800 in labor plus parts just fyi
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Old 11-26-2012, 09:02 AM
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Originally Posted by moparman_2004 View Post
well head gaskets alone will run you about 800 in labor plus parts just fyi

Gaskets are 35 bucks, costs about 40 to get the heads checked and cleaned, and i am mechanically inclined enough to do the labor myself.
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Old 11-26-2012, 10:03 AM
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Originally Posted by Sweeney View Post
Gaskets are 35 bucks, costs about 40 to get the heads checked and cleaned, and i am mechanically inclined enough to do the labor myself.
I'm not doubting your ability to do the headgasket...

But the 4.7 has cam over head and had a total of 3 timing chains that are all connected.

It is a total PITA to do the headgaskets on one. That's not counting the tensioners that require "grenade pins" to hold them all the way back... and there is a specialty tool that holds time on all 3 chains.
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Old 11-26-2012, 04:41 PM
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Well if needed a have the head gaskets exhaust water pump gaskets that came out of a complete gasket set I have that I done need the rest can be reused
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Old 11-26-2012, 09:02 PM
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Originally Posted by SH0K0TA View Post
I'm not doubting your ability to do the headgasket...

But the 4.7 has cam over head and had a total of 3 timing chains that are all connected.

It is a total PITA to do the headgaskets on one. That's not counting the tensioners that require "grenade pins" to hold them all the way back... and there is a specialty tool that holds time on all 3 chains.
Im sure they do make a special tool, but setting timing on a 4.7 isn't that hard, did it myself in the driveway with a few zipties and bungee cords and another person to help me was all I needed. I almost think you can pull heads off a 4.7 without removing the timing cover jus don't allow the chain to jump off the cam gear once the cam unbolted from the cam gear I don't see why the cylinder heads can't be removed, but I could be wrong
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Old 11-26-2012, 10:03 PM
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you can do it that way. but you need these triangle looking things to make sure the tensioners don't pop the chains off and then adjust themselves all the way out.
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Old 11-27-2012, 12:38 AM
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As far as specialty tools go, i can make them. I have done several different head gasket changes on ohc engines. Its all a matter of the approach to be honest. But it appears that the guy backed out at the last minute anyways.. Thanks for all the comments and help tho
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Old 11-27-2012, 01:59 AM
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Originally Posted by 01Dak4.7 View Post
Im sure they do make a special tool, but setting timing on a 4.7 isn't that hard, did it myself in the driveway with a few zipties and bungee cords and another person to help me was all I needed. I almost think you can pull heads off a 4.7 without removing the timing cover jus don't allow the chain to jump off the cam gear once the cam unbolted from the cam gear I don't see why the cylinder heads can't be removed, but I could be wrong
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Originally Posted by SH0K0TA View Post
you can do it that way. but you need these triangle looking things to make sure the tensioners don't pop the chains off and then adjust themselves all the way out.


Guys before we get some mis information out...

NO you cannot remove the heads without removing the front cover... at least CORRECTLY..

Your guides are attached to your heads... and your tensioners are pressing on the guides... the wedge tool is designed to pressure the chains to the guides within the head... Once you move the head there is no way to keep tension on the guides and or prevent your tensioners from fully extending.

You will need to remove the front cover and rig up some Zip ties to hold the two cam chains from falling off of the idler sprocket in the center...

You will also need to zip tie the cam sprockets to the chain...

once the heads are removed you will need to reset your tensioners by compressing them and installing a pin or paper clip into the hole. This is easiest when done in your hand so removing the tensioner completely will actually make it easier.

If you do not remove the front cover your tensioner will fully extend... and you also risk losing time of your cam chains and idler sprocket... Its just easier to do it right...


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Old 11-27-2012, 03:28 AM
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I had forgot about the chain guides that are bolted to the heads, but yea the tensioners would over extend I actually had wound up using small nails to hold mine in place when I reset my tensioners. Anyways def all good information for anyone attempting to remove heads or reset timing etc.
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Old 11-27-2012, 05:35 AM
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Reading all this makes me extremely nervous about blowing a head gasket now.
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Old 11-27-2012, 05:51 AM
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ya i didnt even wanna screw with mine so im taking mine in
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Old 11-27-2012, 07:55 PM
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the timing on the 4.7 can look intimidating but its not bad at all once you do it, funny part bout when I did get mine fixed guy at the dealership couldn't believe I did it on my own. but ive gotten kinda used to that these days older people don't think young guys know how to do much these days
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