How to repair this hole in situ?





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  1. #1
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    Default How to repair this hole in situ?

    Hi one and all. New to this forum.
    Ex Cape Town, living in NZ. Vehicle is a 2004 Jeep Grand Cherokee 2.7 CRD
    Can someone tell me the best, easiest way to repair this hole.
    Would it be safe to braze it with ali rod?
    Also some broken pieces would have fallen into the hole, so do I need to remove them?
    Any suggestions?
    Thanks in advance
    Click image for larger version. 

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  2. #2
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    Default Re: How to repair this hole in situ?

    zoom out a little bit so some scale can be had and what are we looking at ? cam cover ?

    if its got oily bits inside, remove it and replace it
    or remove it for repair work

    trade me has loads of parts and shipment is easy to you in nz (I am in AKL)

  3. #3
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    Default Re: How to repair this hole in situ?

    Click image for larger version. 

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    Quote Originally Posted by 3bar View Post
    zoom out a little bit so some scale can be had and what are we looking at ? cam cover ?

    if its got oily bits inside, remove it and replace it
    or remove it for repair work

    trade me has loads of parts and shipment is easy to you in nz (I am in AKL)
    My real question is can it be fixed without taking it off? which would mean dismantling everything off the top.

    Thanks for your reply
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    Last edited by Walksalot; 2020/02/01 at 05:51 AM.

  4. #4
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    Default Re: How to repair this hole in situ?

    not with out contamination it unless you weld a patch over it

  5. #5
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    Default Re: How to repair this hole in situ?

    whats on the other side of the damage, and i meant zoom out so we can see what that part is - its too close up

    but at a guess, remove and repair, welding throws all sorts of shrapnel onto the other side as well, if theres any oily bits you dont want that, it doesnt look like a complicated fix, but how did it break and why not just get a used part ?

  6. #6
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    Default Re: How to repair this hole in situ?

    I wouldn't try and weld it. Looks thin and fragile.

    I would make a temp repair using some kind of chemical repair.

    I would look at an aluminium patch. If that is aluminium.
    Use acetone as a cleaning agent. If you need to clean twice, do it 3 times.
    Also "rough it up". Create as much surface area as possable to bond to.
    First attach it with some selftappers.
    Disassemble and apply your bonding agent.
    Polyurathane would be first choice. At about 90 shore. Reason for coosing this would be that it would offer some kind of flex. You don't want a putty type bond. You don't want something that won't flex, at least just a little bit.
    Then you could try JB Weld. It never dries totally rigid. Bonds like hell.
    Then put your screws in and make sure all is covered. Even if you have to soak a cloth and put that over.
    Last edited by Henris; 2020/02/01 at 07:19 AM.
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  7. #7
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    Default Re: How to repair this hole in situ?

    If there are bits inside it will cause hassles in the future. If you just want to patch it as is use Q bond, cover the hole with a small piece of newspaper and build it up with the Q bond. I have done this very successfully on many motorbike engines in the bush.

  8. #8
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    Default Re: How to repair this hole in situ?

    My first question would be. what came loose inside to have caused that to break, It looks like it has broken from the inside.

  9. #9
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    Default Re: How to repair this hole in situ?

    Quote Originally Posted by Henris View Post
    I wouldn't try and weld it. Looks thin and fragile.

    I would make a temp repair using some kind of chemical repair.

    I would look at an aluminium patch. If that is aluminium.
    Use acetone as a cleaning agent. If you need to clean twice, do it 3 times.
    Also "rough it up". Create as much surface area as possable to bond to.
    First attach it with some selftappers.
    Disassemble and apply your bonding agent.
    Polyurathane would be first choice. At about 90 shore. Reason for coosing this would be that it would offer some kind of flex. You don't want a putty type bond. You don't want something that won't flex, at least just a little bit.
    Then you could try JB Weld. It never dries totally rigid. Bonds like hell.
    Then put your screws in and make sure all is covered. Even if you have to soak a cloth and put that over.
    That is bloody genius - thanks for sharing, will remember those tricks

  10. #10
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    Default Re: How to repair this hole in situ?

    Expect much bigger pieces to come out after the fix.

  11. #11
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    Default Re: How to repair this hole in situ?

    Is it the cam/valve cover? I'd definitely open up to check for debris

    A quick bush-fix may be scouring,cleaning , gauze of nylon/glass-fibre mat, and pratley epoxy/steel

    Henris plan sounds right for a lasting fix if the part cannot be replaced.
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  12. #12
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    Default Re: How to repair this hole in situ?

    Quote Originally Posted by Henris View Post
    ...JB Weld....
    Something klapped it from the inside, break is outwards, I'd use JB as Henris says, has saved many people.
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  13. #13
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    Default Re: How to repair this hole in situ?

    Repair it in situ - NO!
    Buy a new cam cover, along with all the other goodies that caused it to erupt, and replace them.

  14. #14
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    Default Re: How to repair this hole in situ?

    Until you know what was the reason it broke no repair. Have to remove the reason first and only then think how to repair. I have been busy explaining this principle to people on an item that failed during questionable pressure test. Doesn't help to fix an item if the reason for the failure is not known and eliminated first.

    Next question is how long the repair must last. Loss of gearbox oil has been solved by stuffing bananas into the box. It may get the car home but the cost afterwards?
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  15. #15
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    Thumbs up Re: How to repair this hole in situ?

    Hi Guys
    Thanks for all your inputs. Haven't been back to the forum for a while as I was fixing the hole.
    It happened because I was beating the c***p out of the injector that needed to come out and the bar that I was using got rounded in the process and one over enthusiastic belt with the hammer put it through the casing. So it was an outside-in job.
    So I did repair in situ by making a "jig-saw" piece of aluminium to reduce the hole size ( see pic). Cleaned and cleaned the surrounding casing and glued the piece on with JB Weld, as suggested by a couple of you.
    Once that set I was able to cover the entire area with more JB Weld, 2 coats actually and all done.
    Forgot to take a pic of the result as I was keen to put the new injector in, but you wouldn't know it was a repair as the JB weld dries a matt grey colour, almost matching the aluminium casing. More importantly it's worked.
    Even more important was the new injector fixed my starting issues. When the engine was at operating temp. it would crank but not start. Now it does.


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  16. #16
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    Default Re: How to repair this hole in situ?

    A bit too late. Tappet cover. Pratleys putty would have also worked well. Smooth it over with a wet finger, and spray silver when cured.
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  17. #17
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    Default Re: How to repair this hole in situ?

    "It happened because I was beating the c***p out of the injector that needed to come out "


    [/QUOTE]

    For future use........if you have a stuck injector because of "black death", soak the injector with carb cleaner or lacquer thinners for a few days while covered with plastic sheeting. It will dissolve the gunge. Clean up well and pull with a slide hammer, if still not coming out, soak some more! Just pulled all 5 injectors last week with barely an issue. 3 had black death and were stuck quite well!! (Soaked for a week + !!) Just be careful, disconnect the battery, carb cleaner and thinners are flammable.

  18. #18
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    Default Re: How to repair this hole in situ?

    Hi, I work in the heavy duty mine equipment game, the following product below has helped us out of many a bind before, it's not cheap but often a temporary repair becomes permanent, follow the link below, it has great adhesion strength, resists 200C in a dry application, just be sure to roughen up the area well & clean thoroughly with acetone/alcohol before application, the mix ratio is 3 parts to one.

    https://www.belzona.com/en/products/1000/1111.aspx

  19. #19
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    Default Re: How to repair this hole in situ?

    Quote Originally Posted by snuggs View Post
    Hi, I work in the heavy duty mine equipment game, the following product below has helped us out of many a bind before, it's not cheap but often a temporary repair becomes permanent, follow the link below, it has great adhesion strength, resists 200C in a dry application, just be sure to roughen up the area well & clean thoroughly with acetone/alcohol before application, the mix ratio is 3 parts to one.

    https://www.belzona.com/en/products/1000/1111.aspx
    Looks like a great product!

    Where can it be bought?
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  20. #20
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    Default Re: How to repair this hole in situ?

    You can try this company below, I am not sure where to buy it in SA as I work in West Africa, we normally just ask purchasing to get it for us, just Google “Belzona 1111 South Africa”

    http://www.pentaxtrading.co.za/

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