8 3/4 drain plug?

Engine, Trans & Driveline

  1. 493 Mike

    493 Mike FBBO Gold Member FBBO Gold Member

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    Hi fellas,
    I've welded half couplings and pipe plugged several housings with good results but on my NEW 65 Coronet I was thinking about drilling and tapping for a 1/8" plug. I do not want to weld on a greasy housing and bake a bunch of crud on the inside. Has anyone here tried the drill and tap scenario with success?
    Thanks.
    Mike
     
  2. Yatzee

    Yatzee Well-Known Member

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    I have done this several times. Leave the oil in the rear while you drill and tap to flush any possible metal shavings. Then if you lift on the diff, use a wooden piece on the jack or the rubber pad if it comes with the jack.
     
  3. beanhead

    beanhead Well-Known Member

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    I've done the drill-n-tap, not a problem but the housing was off the car. I like yatzee's idea above, to let the oil wash the shavings back out. May be messy I would just drill slow and don't be directly under it...
     
  4. Cornpatch MO

    Cornpatch MO Well-Known Member

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    I drilled and tapped mine for a brass allen head plug. I have a 3/4" rubber pad to put on the floor jack. I suggest grease on your tap to make the thread filings stick to it, and a magnetic drain plug. Lisle Corp. used to make a lot of different magnetic drain plugs...........................MO
     
  5. 493 Mike

    493 Mike FBBO Gold Member FBBO Gold Member

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    I have a couple pieces of 2x4 with a clearance hole in them for jacking. Thanks for the feedback fellas.
    Mike
     
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