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11-12-2021, 10:21 PM | #1 |
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Join Date: May 2010
Location: Williamsburg, VA
Posts: 510
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Oil Drain Tube Thread Size
The hole in the rear bearing cap is 1/8-27 NPT. The tubes sold by the vendors are 3/8-32 UNF..
Should they be the same? |
11-14-2021, 11:29 AM | #2 |
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Join Date: May 2010
Posts: 203
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Re: Oil Drain Tube Thread Size
Ford used two different sizes of these tubes. The one the vendors have is the later version meant to cure a problem with clogging, etc. You may have to search for a used one or drill and tap the cap for the larger tube.
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11-14-2021, 12:10 PM | #3 |
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Join Date: May 2010
Posts: 2,598
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Re: Oil Drain Tube Thread Size
Berts has both sizes of drain tubes...
https://modelastore.com/index.php?ro...&category_id=0 NOTE: Most main caps I see have a SMALL tack weld so it will not fall off. You have to be sure when gas welding or brazing not to melt the babbit in the main cap. Maybe an engine builder will comment on whether Mig or Tig is better. Last edited by Benson; 11-14-2021 at 12:31 PM. |
11-14-2021, 04:21 PM | #4 | |
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Location: Williamsburg, VA
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Re: Oil Drain Tube Thread Size
Quote:
Ora at Schwalms recommended red loctite. |
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11-15-2021, 01:00 PM | #5 |
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Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,046
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Re: Oil Drain Tube Thread Size
Get a piece of 1/8 pipe and make your own drain tube.
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If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
05-22-2023, 10:41 PM | #6 | |
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Join Date: May 2023
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Re: Oil Drain Tube Thread Size
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05-23-2023, 07:18 AM | #7 | ||
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Join Date: May 2010
Location: Eastern Tennessee
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Re: Oil Drain Tube Thread Size
Quote:
Quote:
Steve is correct. Just for clarity, the early A-6325-AR Cap's hole was threaded 5/16-32. . |
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05-24-2023, 12:04 AM | #8 |
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Join Date: May 2010
Location: ACT Australia
Posts: 506
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Re: Oil Drain Tube Thread Size
What size were the B pipes?
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