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Replacing head gasket

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Ok this is my first time posting here so if I'm missing something please let me know.

 

I'm relatively new to the diesel world but have read multiple posts on here as well as other sites about replacing a head gasket. 

 

My first question is do you need to resurface the block in addition to the head when doing a hg replacement on these 24v cummins? Also Is it common for the head to be cracked at 200k

 

This is my dd and I noticed that I am leaking oil right where the head and block meet. I cleaned it up and drove it some more and it definitely looks like it is leaking from the head gasket.

I would need to replace it during a weekend and want to make sure I will not have any surprises that I am not aware of.

I've looked at getting a new head with rings but I don't know what all I would need to do in addition to just a hg replacement.

 

Engine is from a 2002 2500, has S363/68/12 with 7x.010 Injectors and a quadzilla adrenaline.

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  • Mopar1973Man
    Mopar1973Man

    Correct. You must place the head then install the studs. The longer studs go on the exhaust side of the head. There is one that won't fit between the cowl and the head. I use a floor jack and lift the

  • Dieselfuture
    Dieselfuture

    What he said ^^^   I used a shop vac when scraping the gasket off, that way everything was sucked up as soon as it was lose, it's a but of paint in the but to have a scraper in one hand and

  • Silverwolf2691
    Silverwolf2691

    Not entirely sure on the o-ringing. I don't know if its a static diameter or if the o-ring diameter is based on the cylinder bore diameter, I don't think it is based on just sending the head out to pl

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  • Author

Well finally drove the old goat home today.

After testing the theory of the injector feeder tubes holes being off by a few degrees we were able to see that this was most likely the case.

The same uneven scoring on the tips happened when using one of the tubes from the front on a cylinder on the back of the block.

 

From here we ordered a new head and within 2 weeks the truck was up and running.

 

So lesson learned, if you buy a new head not only check the vales and all of that fun stuff but also dry fit the injectors and feeder tubes before putting it on the truck.

 

I want to thank everyone on here for your input and suggestions throughout this post.

    • Like 2
    • Owner

    Now let me ask... Which did you tighten first? Injector or the lines? Lines are to be tighten first before injectors. This allows the injectors to move a bit to line up the crossover tubes in the injector sockets and make the best seal.

    • Like 1
    • Author

    When testing the back 3 cylinders we set the injectors then tightened the feeder tubes then tightened the injectors down.

     

    The first test showed the seating was off so the shop got a thicker washer for the injector and that still did not help.

     

    At that point I did not want to take the risk of putting the head back on it since it was out of warranty so I decided to just go with a new one that way if there is an issue we can warranty it and they pay for the extra labor.

     

    After all of this though it has made me more aware when doing anything with the injectors again.

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