Oil Pressure Sending Unit Nipple Length?

1950 - 1952, M38, questions, discussions, regarding anything related to the M38.

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Oil Pressure Sending Unit Nipple Length?

Postby dfield » Mon May 24, 2010 1:02 pm

What is the length of the oil pressure sending unit nipple that comes out of the side of the block?
Looking for the following parts to finish my 1952 M38: fuel tank straps, front seat pans, battery cables, top bow rods, patch body panels for rear corners. NOS 0-60 psi oil pressure sending unit with Douglas connector. NOS head light dimmer switch.
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Re: Oil Pressure Sending Unit Nipple Length?

Postby Cuz » Mon May 24, 2010 5:14 pm

1 inch
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Re: Oil Pressure Sending Unit Nipple Length?

Postby dfield » Mon May 24, 2010 8:22 pm

Thanks Wes. Ace had a 3/4" and 1 1/2" but no 1". They also had 3" so I bought one of those and will cut and thread it.
Looking for the following parts to finish my 1952 M38: fuel tank straps, front seat pans, battery cables, top bow rods, patch body panels for rear corners. NOS 0-60 psi oil pressure sending unit with Douglas connector. NOS head light dimmer switch.
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Re: Oil Pressure Sending Unit Nipple Length?

Postby Ben Dover » Mon May 24, 2010 8:38 pm

It is not a nipple, It is a 1/4" X 1/8" Black Iron Street Elbow. I believe you will find it described in the SNL. If not just go to a plumbing supply store that has iron pipe fittings. 1/4" Female X 1/8" male to be exact.
(the Army taught me how to ID pipe fittings 50 years ago :wink: )
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Re: Oil Pressure Sending Unit Nipple Length?

Postby Cuz » Tue May 25, 2010 8:31 pm

It is a nipple and it is installed in the block and a 90 deg female 1/8"P to female 1/4"P reducer is then installed 0n the nipple.

This is what the ORD 9 SNL G-740 really says!

senders.JPG
senders.JPG (80.39 KiB) Viewed 275 times


Oil Press sender.JPG
Oil Press sender.JPG (145.25 KiB) Viewed 259 times
Last edited by Cuz on Tue May 25, 2010 11:25 pm, edited 2 times in total.
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Re: Oil Pressure Sending Unit Nipple Length?

Postby Ben Dover » Tue May 25, 2010 8:34 pm

I'll be darned, and you can pick it up at the same place as the reducing elbow :wink:
1/8" Hex Nipple with a place for a wrench in the center..
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