welding milodon sump. Mig or Tig?

New Hemi Engine Swaps

  1. shags

    shags Member

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    I have to modify my sump to clear the steering rack and was wondering if welding it with my Mig will be ok or should i get it Tig welded?
    The plan is to cut a 35mm band form the walls and lift the whole floor of the rear section up then use a section of the offcut to patch the hole. It will end up being approximately 1mm from the windage tray which i think i will have flatten it off slightly to get more clearance.
    Can anyone see a problem with this?
    Thanks in advance,your input is appreciated.
     

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  2. mo-cars

    mo-cars Well-Known Member

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    Is that an Elko K member ?
    If you are really good with your mig you could probably do an acceptable job , but a a tig would be so much better .
    I would advise to have the sump bolted down to a flat surface (like the block ) to avoid warpage when welding .
    Is it possable to raise the engine a little to reduce the amount you need to cut the sump .
     
  3. Purple Haze

    Purple Haze Well-Known Member

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    Tig
     
  4. Dartnut

    Dartnut Don't hate me because i'm beautiful

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    If you have access to a tig, that would be my first choice.
    The welds are always cleaner with a tig.
    Mig would do the job, but you are asking for the best choice.
     
  5. Tincup

    Tincup Well-Known Member

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    I would recommend Tig, Mig can leave pinholes which will seep oil.
     
  6. sheetmetaldan

    sheetmetaldan Well-Known Member

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    I agree Tig is the way to go. A few years back I was working on the roof of the Boston convention center it was all stainless steel. We had to Tig weld every seam for this very reason! They wanted to Mig the seams to speed up the job, but that process got shot down because of the potential of water leaking in.
     
  7. 67Dart273

    67Dart273 FABO Gold Member FABO Gold Member

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    Hell, LOL, I can remember when we use'ta braze/ gas weld this stuff
     
  8. Hellcat Cuda

    Hellcat Cuda Well-Known Member

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    Definately TIG it...
     
  9. shags

    shags Member

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    Mo-cars. K frame is Elko, as for raising the engine, i`m struggling for clearance on the firewall so i need keep it as low as possible.

    Thanks for the input guys, I think i`m sold on the TIG welding,
     
  10. GEO

    GEO Sarcasm Inc.

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    And I never had one leak that I welded that way:glasses7:
     
  11. mo-cars

    mo-cars Well-Known Member

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    Where about's in Australia are you Shags , i'm Brisbane .
     
  12. Boony405hp

    Boony405hp Well-Known Member

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    Hey Shags, had to go through a similar process mate. I have the same rack and pinion setup with a 5.7 Hemi. I ended up chopping 'x' amount out in order to get 10mm clearance between the top of the rack and the sump. Just be careful not to cut too much out as the crank sits quite low in the pan already.

    [​IMG]
     
  13. Buschi340

    Buschi340 Well-Known Member

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    wow, now you have 2 sumps to drain.....
     
  14. shags

    shags Member

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    Tassie mate.

    Boony, that looks like a Mig job? I thought about notching it like that but decided on this.
     

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  15. Hyper-Performance

    Hyper-Performance Late Apexer

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    Did that at the track with some oil still in the pan with the pan on the car....I was a nervous wreck and so were the two guys holding the fire extinguishers!

    :sign3:
     
  16. Boony405hp

    Boony405hp Well-Known Member

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    Yeah mate i think it is, I didn't do the job, had a welder do it for me. Your idea is probably better in hindsight. May change it yet, see how it goes.
     
  17. funkyflynz

    funkyflynz Well-Known Member

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    Hey mate, whats the part number for that oil pan? Cheers.
     
  18. shags

    shags Member

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    Hey Funkyflynz,
    milodon pan #31000,
    you will need need these parts also,
    pick up #18331
    indicator and tube #22064
    oil pick up support stud#6506333-AA
    oil stud nut#6502756
    bearing cap bolt#6506272-AA
    You can reuse the original windage tray with slight modification(or milodon have one) and you have to shorten the pan bolts too(or buy new ones from milodon).
    Hope this helps out.
     
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