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Pulling The Heads

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  #1  
Old 07-13-2010, 02:13 AM
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Default Pulling The Heads

With that said, I'm leaking coolant on the passenger side of the block. We did a compression test and I haven't lost compression yet but if the gasket is failing its inevitable.

List for this install evolution.

1. Fastman 69mm Throttle Body
2. Comp Beehive High Load Springs for 4.6L Cobra
3. Cometic Head Gaskets
4. Hylomar Spray
5. Mopar Head Bolt Kit
6. New Header Gaskets
7. New intake Manifold Gaskets
8. Aftermarket Water Pump

I supported the A/C Compressor
block001.jpg
With a paint marker I marked the positions on the cam sprocket and removed it from the chain and inserted a large rope. This was to keep the chain inplace while I pull the head.
block003.jpg
The heads looked pretty rough with carbon deposits and all
block005.jpg
Then I cleaned them with carb cleaner and a brass brush.
heads2003.jpg
stuff010.jpg
The new GMB Waterpump
pump004.jpg
I installed the new Cometic head gasket with hylomar spray
Gaskets002.jpg
I installed the head with new bolts and torqued to 45lbs and then with a torque angle gauge went 90 degrees making each bolt right at 80 foot lbs torque.
I also painted the valve covers and manifold with high temp paint sprayed through a HPLV sprayer.
Heads003.jpg
 

Last edited by Blown287; 08-26-2010 at 12:31 AM.
  #2  
Old 07-13-2010, 07:02 AM
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Good Luck, At least you will have help. I had to replace head gaskets on my last truck just before i sold it all by myself. Cast iron 6L heads are heavy. Just as soon do the port and polish while the heads are off.
 

Last edited by dakotajerry; 07-13-2010 at 09:51 AM.
  #3  
Old 07-13-2010, 12:10 PM
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Do you think the failure is just due to normal wear on the engine, or your S/C setup? I fear something like this going in my engine being I have high miles. I believe I read that your truck is around that 100k mark though, so I wouldnt doubt it being part of normal maintenence.
 
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Old 07-13-2010, 12:27 PM
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Stock head gaskets are usually good up to about 12 lbs. boost. Anything over that you are pushing it. At high boost you start lifting the heads.
 
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Old 07-13-2010, 01:12 PM
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blown.... is there any reviews for the cometic gaskets with a similar setup? on the diesel side, the cometic gasket has been a big problem, not standing up to the boost like the stock one will, and if the head and block were not surfaced all at the same time and completely perfect, it was alomst an instant failure, we just went back to the stock gaskets and arp studs, with zero problems, just my
 
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Old 07-14-2010, 01:03 AM
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Trucker, thanks brother. Cometic has the only multi-layer steel replacement that I can find. I just need something that will hold 14psi with 224 cams. Most of the diesel guys are running major boost. Anywhere from 25-55psi lol. Right now I'm only pulling down 12psi but once I switch to the 3" pulley I will be back to 14 psi.

Jerry, I'm always glad to have help, lol. Travis is back in town so we will probably start on it this week.
 
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Old 07-14-2010, 09:16 AM
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seems alot of work and troubles all of a sudden with the new set up. i am pushing 94000 miles and the only issues is fowling plugs. need to lower the nitrous jets alittle and the crappy gas lately, these motors are good till around 120000 miles before head gasket failure starts. i noticed some of my friends with the older 4.7 are having head gasket issues
 
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Old 07-14-2010, 01:31 PM
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Originally Posted by superdak05
seems alot of work and troubles all of a sudden with the new set up. i am pushing 94000 miles and the only issues is fowling plugs. need to lower the nitrous jets alittle and the crappy gas lately, these motors are good till around 120000 miles before head gasket failure starts. i noticed some of my friends with the older 4.7 are having head gasket issues
A good friend of mine is a mechanic and he told me when i bought the truck that head gaskets on the 4.7's have always been an issue.

Originally Posted by Blown287
Jerry, I'm always glad to have help, lol. Travis is back in town so we will probably start on it this week.
If i was closer to where you live i would be glad to give a hand.
BTW Blown I've contacted SCT. I might become a local tuner Also HPTuner has dodge programing done. They will be releasing it soon.
 

Last edited by lghtngblt02; 07-14-2010 at 02:31 PM. Reason: Merged
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Old 07-14-2010, 02:29 PM
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YEAH I get to bust open Blown's truck again! Always a good time. I feel like July is going to be a good month...
 


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